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go-chart
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remove any mention of github.com/blend

master v3.0.1
Alexander Weinhold 2018-12-06 18:02:38 +01:00
parent ac59e921f6
commit 81e9cbaa9d
42 changed files with 0 additions and 4130 deletions
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18
Makefile
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@ -1,18 +0,0 @@
all: test
ci: profanity coverage
new-install:
@go get -v -u ./...
@go get -v -u github.com/blend/go-sdk/cmd/coverage
@go get -v -u github.com/blend/go-sdk/cmd/profanity
test:
@go test ./...
.PHONY: profanity
profanity:
@profanity -include="*.go,Makefile,README.md"
coverage:
@coverage

8
PROFANITY
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@ -1,8 +0,0 @@
- contains: "github.com/blend/go-sdk/"
message: "should not include go-sdk in this (outside tests)"
include: "*.go"
exclude: "*_test.go"
- contains: "github.com/blendlabs/go-"
message: "should not include blend go-* packages in this"
include: "*.go"

118
annotation_series_test.go
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@ -1,118 +0,0 @@
package chart
import (
"image/color"
"testing"
"github.com/blend/go-sdk/assert"
"git.gutmet.org/go-chart.git/drawing"
)
func TestAnnotationSeriesMeasure(t *testing.T) {
assert := assert.New(t)
as := AnnotationSeries{
Style: StyleShow(),
Annotations: []Value2{
{XValue: 1.0, YValue: 1.0, Label: "1.0"},
{XValue: 2.0, YValue: 2.0, Label: "2.0"},
{XValue: 3.0, YValue: 3.0, Label: "3.0"},
{XValue: 4.0, YValue: 4.0, Label: "4.0"},
},
}
r, err := PNG(110, 110)
assert.Nil(err)
f, err := GetDefaultFont()
assert.Nil(err)
xrange := &ContinuousRange{
Min: 1.0,
Max: 4.0,
Domain: 100,
}
yrange := &ContinuousRange{
Min: 1.0,
Max: 4.0,
Domain: 100,
}
cb := Box{
Top: 5,
Left: 5,
Right: 105,
Bottom: 105,
}
sd := Style{
FontSize: 10.0,
Font: f,
}
box := as.Measure(r, cb, xrange, yrange, sd)
assert.False(box.IsZero())
assert.Equal(-5.0, box.Top)
assert.Equal(5.0, box.Left)
assert.Equal(146.0, box.Right) //the top,left annotation sticks up 5px and out ~44px.
assert.Equal(115.0, box.Bottom)
}
func TestAnnotationSeriesRender(t *testing.T) {
assert := assert.New(t)
as := AnnotationSeries{
Style: Style{
Show: true,
FillColor: drawing.ColorWhite,
StrokeColor: drawing.ColorBlack,
},
Annotations: []Value2{
{XValue: 1.0, YValue: 1.0, Label: "1.0"},
{XValue: 2.0, YValue: 2.0, Label: "2.0"},
{XValue: 3.0, YValue: 3.0, Label: "3.0"},
{XValue: 4.0, YValue: 4.0, Label: "4.0"},
},
}
r, err := PNG(110, 110)
assert.Nil(err)
f, err := GetDefaultFont()
assert.Nil(err)
xrange := &ContinuousRange{
Min: 1.0,
Max: 4.0,
Domain: 100,
}
yrange := &ContinuousRange{
Min: 1.0,
Max: 4.0,
Domain: 100,
}
cb := Box{
Top: 5,
Left: 5,
Right: 105,
Bottom: 105,
}
sd := Style{
FontSize: 10.0,
Font: f,
}
as.Render(r, cb, xrange, yrange, sd)
rr, isRaster := r.(*rasterRenderer)
assert.True(isRaster)
assert.NotNil(rr)
c := rr.i.At(38, 70)
converted, isRGBA := color.RGBAModel.Convert(c).(color.RGBA)
assert.True(isRGBA)
assert.Equal(0, converted.R)
assert.Equal(0, converted.G)
assert.Equal(0, converted.B)
}

320
bar_chart_test.go
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@ -1,320 +0,0 @@
package chart
import (
"bytes"
"math"
"testing"
assert "github.com/blend/go-sdk/assert"
)
func TestBarChartRender(t *testing.T) {
assert := assert.New(t)
bc := BarChart{
Width: 1024,
Title: "Test Title",
TitleStyle: StyleShow(),
XAxis: StyleShow(),
YAxis: YAxis{
Style: StyleShow(),
},
Bars: []Value{
{Value: 1.0, Label: "One"},
{Value: 2.0, Label: "Two"},
{Value: 3.0, Label: "Three"},
{Value: 4.0, Label: "Four"},
{Value: 5.0, Label: "Five"},
},
}
buf := bytes.NewBuffer([]byte{})
err := bc.Render(PNG, buf)
assert.Nil(err)
assert.NotZero(buf.Len())
}
func TestBarChartRenderZero(t *testing.T) {
assert := assert.New(t)
bc := BarChart{
Width: 1024,
Title: "Test Title",
TitleStyle: StyleShow(),
XAxis: StyleShow(),
YAxis: YAxis{
Style: StyleShow(),
},
Bars: []Value{
{Value: 0.0, Label: "One"},
{Value: 0.0, Label: "Two"},
},
}
buf := bytes.NewBuffer([]byte{})
err := bc.Render(PNG, buf)
assert.NotNil(err)
}
func TestBarChartProps(t *testing.T) {
assert := assert.New(t)
bc := BarChart{}
assert.Equal(DefaultDPI, bc.GetDPI())
bc.DPI = 100
assert.Equal(100, bc.GetDPI())
assert.Nil(bc.GetFont())
f, err := GetDefaultFont()
assert.Nil(err)
bc.Font = f
assert.NotNil(bc.GetFont())
assert.Equal(DefaultChartWidth, bc.GetWidth())
bc.Width = DefaultChartWidth - 1
assert.Equal(DefaultChartWidth-1, bc.GetWidth())
assert.Equal(DefaultChartHeight, bc.GetHeight())
bc.Height = DefaultChartHeight - 1
assert.Equal(DefaultChartHeight-1, bc.GetHeight())
assert.Equal(DefaultBarSpacing, bc.GetBarSpacing())
bc.BarSpacing = 150
assert.Equal(150, bc.GetBarSpacing())
assert.Equal(DefaultBarWidth, bc.GetBarWidth())
bc.BarWidth = 75
assert.Equal(75, bc.GetBarWidth())
}
func TestBarChartRenderNoBars(t *testing.T) {
assert := assert.New(t)
bc := BarChart{}
err := bc.Render(PNG, bytes.NewBuffer([]byte{}))
assert.NotNil(err)
}
func TestBarChartGetRanges(t *testing.T) {
assert := assert.New(t)
bc := BarChart{}
yr := bc.getRanges()
assert.NotNil(yr)
assert.False(yr.IsZero())
assert.Equal(-math.MaxFloat64, yr.GetMax())
assert.Equal(math.MaxFloat64, yr.GetMin())
}
func TestBarChartGetRangesBarsMinMax(t *testing.T) {
assert := assert.New(t)
bc := BarChart{
Bars: []Value{
{Value: 1.0},
{Value: 10.0},
},
}
yr := bc.getRanges()
assert.NotNil(yr)
assert.False(yr.IsZero())
assert.Equal(10, yr.GetMax())
assert.Equal(1, yr.GetMin())
}
func TestBarChartGetRangesMinMax(t *testing.T) {
assert := assert.New(t)
bc := BarChart{
YAxis: YAxis{
Range: &ContinuousRange{
Min: 5.0,
Max: 15.0,
},
Ticks: []Tick{
{Value: 7.0, Label: "Foo"},
{Value: 11.0, Label: "Foo2"},
},
},
Bars: []Value{
{Value: 1.0},
{Value: 10.0},
},
}
yr := bc.getRanges()
assert.NotNil(yr)
assert.False(yr.IsZero())
assert.Equal(15, yr.GetMax())
assert.Equal(5, yr.GetMin())
}
func TestBarChartGetRangesTicksMinMax(t *testing.T) {
assert := assert.New(t)
bc := BarChart{
YAxis: YAxis{
Ticks: []Tick{
{Value: 7.0, Label: "Foo"},
{Value: 11.0, Label: "Foo2"},
},
},
Bars: []Value{
{Value: 1.0},
{Value: 10.0},
},
}
yr := bc.getRanges()
assert.NotNil(yr)
assert.False(yr.IsZero())
assert.Equal(11, yr.GetMax())
assert.Equal(7, yr.GetMin())
}
func TestBarChartHasAxes(t *testing.T) {
assert := assert.New(t)
bc := BarChart{}
assert.False(bc.hasAxes())
bc.YAxis = YAxis{
Style: StyleShow(),
}
assert.True(bc.hasAxes())
}
func TestBarChartGetDefaultCanvasBox(t *testing.T) {
assert := assert.New(t)
bc := BarChart{}
b := bc.getDefaultCanvasBox()
assert.False(b.IsZero())
}
func TestBarChartSetRangeDomains(t *testing.T) {
assert := assert.New(t)
bc := BarChart{}
cb := bc.box()
yr := bc.getRanges()
yr2 := bc.setRangeDomains(cb, yr)
assert.NotZero(yr2.GetDomain())
}
func TestBarChartGetValueFormatters(t *testing.T) {
assert := assert.New(t)
bc := BarChart{}
vf := bc.getValueFormatters()
assert.NotNil(vf)
assert.Equal("1234.00", vf(1234.0))
bc.YAxis.ValueFormatter = func(_ interface{}) string { return "test" }
assert.Equal("test", bc.getValueFormatters()(1234))
}
func TestBarChartGetAxesTicks(t *testing.T) {
assert := assert.New(t)
bc := BarChart{
Bars: []Value{
{Value: 1.0},
{Value: 2.0},
{Value: 3.0},
},
}
r, err := PNG(128, 128)
assert.Nil(err)
yr := bc.getRanges()
yf := bc.getValueFormatters()
ticks := bc.getAxesTicks(r, yr, yf)
assert.Empty(ticks)
bc.YAxis.Style.Show = true
ticks = bc.getAxesTicks(r, yr, yf)
assert.Len(ticks, 2)
}
func TestBarChartCalculateEffectiveBarSpacing(t *testing.T) {
assert := assert.New(t)
bc := BarChart{
Width: 1024,
BarWidth: 10,
Bars: []Value{
{Value: 1.0, Label: "One"},
{Value: 2.0, Label: "Two"},
{Value: 3.0, Label: "Three"},
{Value: 4.0, Label: "Four"},
{Value: 5.0, Label: "Five"},
},
}
spacing := bc.calculateEffectiveBarSpacing(bc.box())
assert.NotZero(spacing)
bc.BarWidth = 250
spacing = bc.calculateEffectiveBarSpacing(bc.box())
assert.Zero(spacing)
}
func TestBarChartCalculateEffectiveBarWidth(t *testing.T) {
assert := assert.New(t)
bc := BarChart{
Width: 1024,
BarWidth: 10,
Bars: []Value{
{Value: 1.0, Label: "One"},
{Value: 2.0, Label: "Two"},
{Value: 3.0, Label: "Three"},
{Value: 4.0, Label: "Four"},
{Value: 5.0, Label: "Five"},
},
}
cb := bc.box()
spacing := bc.calculateEffectiveBarSpacing(bc.box())
assert.NotZero(spacing)
barWidth := bc.calculateEffectiveBarWidth(bc.box(), spacing)
assert.Equal(10, barWidth)
bc.BarWidth = 250
spacing = bc.calculateEffectiveBarSpacing(bc.box())
assert.Zero(spacing)
barWidth = bc.calculateEffectiveBarWidth(bc.box(), spacing)
assert.Equal(199, barWidth)
assert.Equal(cb.Width()+1, bc.calculateTotalBarWidth(barWidth, spacing))
bw, bs, total := bc.calculateScaledTotalWidth(cb)
assert.Equal(spacing, bs)
assert.Equal(barWidth, bw)
assert.Equal(cb.Width()+1, total)
}
func TestBarChatGetTitleFontSize(t *testing.T) {
assert := assert.New(t)
size := BarChart{Width: 2049, Height: 2049}.getTitleFontSize()
assert.Equal(48, size)
size = BarChart{Width: 1025, Height: 1025}.getTitleFontSize()
assert.Equal(24, size)
size = BarChart{Width: 513, Height: 513}.getTitleFontSize()
assert.Equal(18, size)
size = BarChart{Width: 257, Height: 257}.getTitleFontSize()
assert.Equal(12, size)
size = BarChart{Width: 128, Height: 128}.getTitleFontSize()
assert.Equal(10, size)
}

53
bollinger_band_series_test.go
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@ -1,53 +0,0 @@
package chart
import (
"fmt"
"math"
"testing"
"github.com/blend/go-sdk/assert"
"git.gutmet.org/go-chart.git/seq"
)
func TestBollingerBandSeries(t *testing.T) {
assert := assert.New(t)
s1 := mockValuesProvider{
X: seq.Range(1.0, 100.0),
Y: seq.RandomValuesWithMax(100, 1024),
}
bbs := &BollingerBandsSeries{
InnerSeries: s1,
}
xvalues := make([]float64, 100)
y1values := make([]float64, 100)
y2values := make([]float64, 100)
for x := 0; x < 100; x++ {
xvalues[x], y1values[x], y2values[x] = bbs.GetBoundedValues(x)
}
for x := bbs.GetPeriod(); x < 100; x++ {
assert.True(y1values[x] > y2values[x], fmt.Sprintf("%v vs. %v", y1values[x], y2values[x]))
}
}
func TestBollingerBandLastValue(t *testing.T) {
assert := assert.New(t)
s1 := mockValuesProvider{
X: seq.Range(1.0, 100.0),
Y: seq.Range(1.0, 100.0),
}
bbs := &BollingerBandsSeries{
InnerSeries: s1,
}
x, y1, y2 := bbs.GetBoundedLastValues()
assert.Equal(100.0, x)
assert.Equal(101, math.Floor(y1))
assert.Equal(83, math.Floor(y2))
}

188
box_test.go
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package chart
import (
"math"
"testing"
"github.com/blend/go-sdk/assert"
)
func TestBoxClone(t *testing.T) {
assert := assert.New(t)
a := Box{Top: 5, Left: 5, Right: 15, Bottom: 15}
b := a.Clone()
assert.True(a.Equals(b))
assert.True(b.Equals(a))
}
func TestBoxEquals(t *testing.T) {
assert := assert.New(t)
a := Box{Top: 5, Left: 5, Right: 15, Bottom: 15}
b := Box{Top: 10, Left: 10, Right: 30, Bottom: 30}
c := Box{Top: 5, Left: 5, Right: 15, Bottom: 15}
assert.True(a.Equals(a))
assert.True(a.Equals(c))
assert.True(c.Equals(a))
assert.False(a.Equals(b))
assert.False(c.Equals(b))
assert.False(b.Equals(a))
assert.False(b.Equals(c))
}
func TestBoxIsBiggerThan(t *testing.T) {
assert := assert.New(t)
a := Box{Top: 5, Left: 5, Right: 25, Bottom: 25}
b := Box{Top: 10, Left: 10, Right: 20, Bottom: 20} // only half bigger
c := Box{Top: 1, Left: 1, Right: 30, Bottom: 30} //bigger
assert.True(a.IsBiggerThan(b))
assert.False(a.IsBiggerThan(c))
assert.True(c.IsBiggerThan(a))
}
func TestBoxIsSmallerThan(t *testing.T) {
assert := assert.New(t)
a := Box{Top: 5, Left: 5, Right: 25, Bottom: 25}
b := Box{Top: 10, Left: 10, Right: 20, Bottom: 20} // only half bigger
c := Box{Top: 1, Left: 1, Right: 30, Bottom: 30} //bigger
assert.False(a.IsSmallerThan(b))
assert.True(a.IsSmallerThan(c))
assert.False(c.IsSmallerThan(a))
}
func TestBoxGrow(t *testing.T) {
assert := assert.New(t)
a := Box{Top: 1, Left: 2, Right: 15, Bottom: 15}
b := Box{Top: 4, Left: 5, Right: 30, Bottom: 35}
c := a.Grow(b)
assert.False(c.Equals(b))
assert.False(c.Equals(a))
assert.Equal(1, c.Top)
assert.Equal(2, c.Left)
assert.Equal(30, c.Right)
assert.Equal(35, c.Bottom)
}
func TestBoxFit(t *testing.T) {
assert := assert.New(t)
a := Box{Top: 64, Left: 64, Right: 192, Bottom: 192}
b := Box{Top: 16, Left: 16, Right: 256, Bottom: 170}
c := Box{Top: 16, Left: 16, Right: 170, Bottom: 256}
fab := a.Fit(b)
assert.Equal(a.Left, fab.Left)
assert.Equal(a.Right, fab.Right)
assert.True(fab.Top < fab.Bottom)
assert.True(fab.Left < fab.Right)
assert.True(math.Abs(b.Aspect()-fab.Aspect()) < 0.02)
fac := a.Fit(c)
assert.Equal(a.Top, fac.Top)
assert.Equal(a.Bottom, fac.Bottom)
assert.True(math.Abs(c.Aspect()-fac.Aspect()) < 0.02)
}
func TestBoxConstrain(t *testing.T) {
assert := assert.New(t)
a := Box{Top: 64, Left: 64, Right: 192, Bottom: 192}
b := Box{Top: 16, Left: 16, Right: 256, Bottom: 170}
c := Box{Top: 16, Left: 16, Right: 170, Bottom: 256}
cab := a.Constrain(b)
assert.Equal(64, cab.Top)
assert.Equal(64, cab.Left)
assert.Equal(192, cab.Right)
assert.Equal(170, cab.Bottom)
cac := a.Constrain(c)
assert.Equal(64, cac.Top)
assert.Equal(64, cac.Left)
assert.Equal(170, cac.Right)
assert.Equal(192, cac.Bottom)
}
func TestBoxOuterConstrain(t *testing.T) {
assert := assert.New(t)
box := NewBox(0, 0, 100, 100)
canvas := NewBox(5, 5, 95, 95)
taller := NewBox(-10, 5, 50, 50)
c := canvas.OuterConstrain(box, taller)
assert.Equal(15, c.Top, c.String())
assert.Equal(5, c.Left, c.String())
assert.Equal(95, c.Right, c.String())
assert.Equal(95, c.Bottom, c.String())
wider := NewBox(5, 5, 110, 50)
d := canvas.OuterConstrain(box, wider)
assert.Equal(5, d.Top, d.String())
assert.Equal(5, d.Left, d.String())
assert.Equal(85, d.Right, d.String())
assert.Equal(95, d.Bottom, d.String())
}
func TestBoxShift(t *testing.T) {
assert := assert.New(t)
b := Box{
Top: 5,
Left: 5,
Right: 10,
Bottom: 10,
}
shifted := b.Shift(1, 2)
assert.Equal(7, shifted.Top)
assert.Equal(6, shifted.Left)
assert.Equal(11, shifted.Right)
assert.Equal(12, shifted.Bottom)
}
func TestBoxCenter(t *testing.T) {
assert := assert.New(t)
b := Box{
Top: 10,
Left: 10,
Right: 20,
Bottom: 30,
}
cx, cy := b.Center()
assert.Equal(15, cx)
assert.Equal(20, cy)
}
func TestBoxCornersCenter(t *testing.T) {
assert := assert.New(t)
bc := BoxCorners{
TopLeft: Point{5, 5},
TopRight: Point{15, 5},
BottomRight: Point{15, 15},
BottomLeft: Point{5, 15},
}
cx, cy := bc.Center()
assert.Equal(10, cx)
assert.Equal(10, cy)
}
func TestBoxCornersRotate(t *testing.T) {
assert := assert.New(t)
bc := BoxCorners{
TopLeft: Point{5, 5},
TopRight: Point{15, 5},
BottomRight: Point{15, 15},
BottomLeft: Point{5, 15},
}
rotated := bc.Rotate(45)
assert.True(rotated.TopLeft.Equals(Point{10, 3}), rotated.String())
}

556
chart_test.go
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@ -1,556 +0,0 @@
package chart
import (
"bytes"
"image"
"image/png"
"math"
"testing"
"time"
"github.com/blend/go-sdk/assert"
"git.gutmet.org/go-chart.git/drawing"
"git.gutmet.org/go-chart.git/seq"
)
func TestChartGetDPI(t *testing.T) {
assert := assert.New(t)
unset := Chart{}
assert.Equal(DefaultDPI, unset.GetDPI())
assert.Equal(192, unset.GetDPI(192))
set := Chart{DPI: 128}
assert.Equal(128, set.GetDPI())
assert.Equal(128, set.GetDPI(192))
}
func TestChartGetFont(t *testing.T) {
assert := assert.New(t)
f, err := GetDefaultFont()
assert.Nil(err)
unset := Chart{}
assert.Nil(unset.GetFont())
set := Chart{Font: f}
assert.NotNil(set.GetFont())
}
func TestChartGetWidth(t *testing.T) {
assert := assert.New(t)
unset := Chart{}
assert.Equal(DefaultChartWidth, unset.GetWidth())
set := Chart{Width: DefaultChartWidth + 10}
assert.Equal(DefaultChartWidth+10, set.GetWidth())
}
func TestChartGetHeight(t *testing.T) {
assert := assert.New(t)
unset := Chart{}
assert.Equal(DefaultChartHeight, unset.GetHeight())
set := Chart{Height: DefaultChartHeight + 10}
assert.Equal(DefaultChartHeight+10, set.GetHeight())
}
func TestChartGetRanges(t *testing.T) {
assert := assert.New(t)
c := Chart{
Series: []Series{
ContinuousSeries{
XValues: []float64{-2.0, -1.0, 0, 1.0, 2.0},
YValues: []float64{1.0, 2.0, 3.0, 4.0, 4.5},
},
ContinuousSeries{
XValues: []float64{1.0, 2.0, 3.0, 4.0, 5.0},
YValues: []float64{-2.1, -1.0, 0, 1.0, 2.0},
},
ContinuousSeries{
YAxis: YAxisSecondary,
XValues: []float64{1.0, 2.0, 3.0, 4.0, 5.0},
YValues: []float64{10.0, 11.0, 12.0, 13.0, 14.0},
},
},
}
xrange, yrange, yrangeAlt := c.getRanges()
assert.Equal(-2.0, xrange.GetMin())
assert.Equal(5.0, xrange.GetMax())
assert.Equal(-2.1, yrange.GetMin())
assert.Equal(4.5, yrange.GetMax())
assert.Equal(10.0, yrangeAlt.GetMin())
assert.Equal(14.0, yrangeAlt.GetMax())
cSet := Chart{
XAxis: XAxis{
Range: &ContinuousRange{Min: 9.8, Max: 19.8},
},
YAxis: YAxis{
Range: &ContinuousRange{Min: 9.9, Max: 19.9},
},
YAxisSecondary: YAxis{
Range: &ContinuousRange{Min: 9.7, Max: 19.7},
},
Series: []Series{
ContinuousSeries{
XValues: []float64{-2.0, -1.0, 0, 1.0, 2.0},
YValues: []float64{1.0, 2.0, 3.0, 4.0, 4.5},
},
ContinuousSeries{
XValues: []float64{1.0, 2.0, 3.0, 4.0, 5.0},
YValues: []float64{-2.1, -1.0, 0, 1.0, 2.0},
},
ContinuousSeries{
YAxis: YAxisSecondary,
XValues: []float64{1.0, 2.0, 3.0, 4.0, 5.0},
YValues: []float64{10.0, 11.0, 12.0, 13.0, 14.0},
},
},
}
xr2, yr2, yra2 := cSet.getRanges()
assert.Equal(9.8, xr2.GetMin())
assert.Equal(19.8, xr2.GetMax())
assert.Equal(9.9, yr2.GetMin())
assert.Equal(19.9, yr2.GetMax())
assert.Equal(9.7, yra2.GetMin())
assert.Equal(19.7, yra2.GetMax())
}
func TestChartGetRangesUseTicks(t *testing.T) {
assert := assert.New(t)
// this test asserts that ticks should supercede manual ranges when generating the overall ranges.
c := Chart{
YAxis: YAxis{
Ticks: []Tick{
{0.0, "Zero"},
{1.0, "1.0"},
{2.0, "2.0"},
{3.0, "3.0"},
{4.0, "4.0"},
{5.0, "Five"},
},
Range: &ContinuousRange{
Min: -5.0,
Max: 5.0,
},
},
Series: []Series{
ContinuousSeries{
XValues: []float64{-2.0, -1.0, 0, 1.0, 2.0},
YValues: []float64{1.0, 2.0, 3.0, 4.0, 4.5},
},
},
}
xr, yr, yar := c.getRanges()
assert.Equal(-2.0, xr.GetMin())
assert.Equal(2.0, xr.GetMax())
assert.Equal(0.0, yr.GetMin())
assert.Equal(5.0, yr.GetMax())
assert.True(yar.IsZero(), yar.String())
}
func TestChartGetRangesUseUserRanges(t *testing.T) {
assert := assert.New(t)
c := Chart{
YAxis: YAxis{
Range: &ContinuousRange{
Min: -5.0,
Max: 5.0,
},
},
Series: []Series{
ContinuousSeries{
XValues: []float64{-2.0, -1.0, 0, 1.0, 2.0},
YValues: []float64{1.0, 2.0, 3.0, 4.0, 4.5},
},
},
}
xr, yr, yar := c.getRanges()
assert.Equal(-2.0, xr.GetMin())
assert.Equal(2.0, xr.GetMax())
assert.Equal(-5.0, yr.GetMin())
assert.Equal(5.0, yr.GetMax())
assert.True(yar.IsZero(), yar.String())
}
func TestChartGetBackgroundStyle(t *testing.T) {
assert := assert.New(t)
c := Chart{
Background: Style{
FillColor: drawing.ColorBlack,
},
}
bs := c.getBackgroundStyle()
assert.Equal(bs.FillColor.String(), drawing.ColorBlack.String())
}
func TestChartGetCanvasStyle(t *testing.T) {
assert := assert.New(t)
c := Chart{
Canvas: Style{
FillColor: drawing.ColorBlack,
},
}
bs := c.getCanvasStyle()
assert.Equal(bs.FillColor.String(), drawing.ColorBlack.String())
}
func TestChartGetDefaultCanvasBox(t *testing.T) {
assert := assert.New(t)
c := Chart{}
canvasBoxDefault := c.getDefaultCanvasBox()
assert.False(canvasBoxDefault.IsZero())
assert.Equal(DefaultBackgroundPadding.Top, canvasBoxDefault.Top)
assert.Equal(DefaultBackgroundPadding.Left, canvasBoxDefault.Left)
assert.Equal(c.GetWidth()-DefaultBackgroundPadding.Right, canvasBoxDefault.Right)
assert.Equal(c.GetHeight()-DefaultBackgroundPadding.Bottom, canvasBoxDefault.Bottom)
custom := Chart{
Background: Style{
Padding: Box{
Top: DefaultBackgroundPadding.Top + 1,
Left: DefaultBackgroundPadding.Left + 1,
Right: DefaultBackgroundPadding.Right + 1,
Bottom: DefaultBackgroundPadding.Bottom + 1,
},
},
}
canvasBoxCustom := custom.getDefaultCanvasBox()
assert.False(canvasBoxCustom.IsZero())
assert.Equal(DefaultBackgroundPadding.Top+1, canvasBoxCustom.Top)
assert.Equal(DefaultBackgroundPadding.Left+1, canvasBoxCustom.Left)
assert.Equal(c.GetWidth()-(DefaultBackgroundPadding.Right+1), canvasBoxCustom.Right)
assert.Equal(c.GetHeight()-(DefaultBackgroundPadding.Bottom+1), canvasBoxCustom.Bottom)
}
func TestChartGetValueFormatters(t *testing.T) {
assert := assert.New(t)
c := Chart{
Series: []Series{
ContinuousSeries{
XValues: []float64{-2.0, -1.0, 0, 1.0, 2.0},
YValues: []float64{1.0, 2.0, 3.0, 4.0, 4.5},
},
ContinuousSeries{
XValues: []float64{1.0, 2.0, 3.0, 4.0, 5.0},
YValues: []float64{-2.1, -1.0, 0, 1.0, 2.0},
},
ContinuousSeries{
YAxis: YAxisSecondary,
XValues: []float64{1.0, 2.0, 3.0, 4.0, 5.0},
YValues: []float64{10.0, 11.0, 12.0, 13.0, 14.0},
},
},
}
dxf, dyf, dyaf := c.getValueFormatters()
assert.NotNil(dxf)
assert.NotNil(dyf)
assert.NotNil(dyaf)
}
func TestChartHasAxes(t *testing.T) {
assert := assert.New(t)
assert.False(Chart{}.hasAxes())
x := Chart{
XAxis: XAxis{
Style: StyleShow(),
},
}
assert.True(x.hasAxes())
y := Chart{
YAxis: YAxis{
Style: StyleShow(),
},
}
assert.True(y.hasAxes())
ya := Chart{
YAxisSecondary: YAxis{
Style: StyleShow(),
},
}
assert.True(ya.hasAxes())
}
func TestChartGetAxesTicks(t *testing.T) {
assert := assert.New(t)
r, err := PNG(1024, 1024)
assert.Nil(err)
c := Chart{
XAxis: XAxis{
Style: StyleShow(),
Range: &ContinuousRange{Min: 9.8, Max: 19.8},
},
YAxis: YAxis{
Style: StyleShow(),
Range: &ContinuousRange{Min: 9.9, Max: 19.9},
},
YAxisSecondary: YAxis{
Style: StyleShow(),
Range: &ContinuousRange{Min: 9.7, Max: 19.7},
},
}
xr, yr, yar := c.getRanges()
xt, yt, yat := c.getAxesTicks(r, xr, yr, yar, FloatValueFormatter, FloatValueFormatter, FloatValueFormatter)
assert.NotEmpty(xt)
assert.NotEmpty(yt)
assert.NotEmpty(yat)
}
func TestChartSingleSeries(t *testing.T) {
assert := assert.New(t)
now := time.Now()
c := Chart{
Title: "Hello!",
TitleStyle: StyleShow(),
Width: 1024,
Height: 400,
YAxis: YAxis{
Style: StyleShow(),
Range: &ContinuousRange{
Min: 0.0,
Max: 4.0,
},
},
XAxis: XAxis{
Style: StyleShow(),
},
Series: []Series{
TimeSeries{
Name: "goog",
XValues: []time.Time{now.AddDate(0, 0, -3), now.AddDate(0, 0, -2), now.AddDate(0, 0, -1)},
YValues: []float64{1.0, 2.0, 3.0},
},
},
}
buffer := bytes.NewBuffer([]byte{})
c.Render(PNG, buffer)
assert.NotEmpty(buffer.Bytes())
}
func TestChartRegressionBadRanges(t *testing.T) {
assert := assert.New(t)
c := Chart{
Series: []Series{
ContinuousSeries{
XValues: []float64{math.Inf(1), math.Inf(1), math.Inf(1), math.Inf(1), math.Inf(1)},
YValues: []float64{1.0, 2.0, 3.0, 4.0, 4.5},
},
},
}
buffer := bytes.NewBuffer([]byte{})
c.Render(PNG, buffer)
assert.True(true, "Render needs to finish.")
}
func TestChartRegressionBadRangesByUser(t *testing.T) {
assert := assert.New(t)
c := Chart{
YAxis: YAxis{
Range: &ContinuousRange{
Min: math.Inf(-1),
Max: math.Inf(1), // this could really happen? eh.
},
},
Series: []Series{
ContinuousSeries{
XValues: seq.Range(1.0, 10.0),
YValues: seq.Range(1.0, 10.0),
},
},
}
buffer := bytes.NewBuffer([]byte{})
c.Render(PNG, buffer)
assert.True(true, "Render needs to finish.")
}
func TestChartValidatesSeries(t *testing.T) {
assert := assert.New(t)
c := Chart{
Series: []Series{
ContinuousSeries{
XValues: seq.Range(1.0, 10.0),
YValues: seq.Range(1.0, 10.0),
},
},
}
assert.Nil(c.validateSeries())
c = Chart{
Series: []Series{
ContinuousSeries{
XValues: seq.Range(1.0, 10.0),
},
},
}
assert.NotNil(c.validateSeries())
}
func TestChartCheckRanges(t *testing.T) {
assert := assert.New(t)
c := Chart{
Series: []Series{
ContinuousSeries{
XValues: []float64{1.0, 2.0},
YValues: []float64{3.10, 3.14},
},
},
}
xr, yr, yra := c.getRanges()
assert.Nil(c.checkRanges(xr, yr, yra))
}
func TestChartCheckRangesWithRanges(t *testing.T) {
assert := assert.New(t)
c := Chart{
XAxis: XAxis{
Range: &ContinuousRange{
Min: 0,
Max: 10,
},
},
YAxis: YAxis{
Range: &ContinuousRange{
Min: 0,
Max: 5,
},
},
Series: []Series{
ContinuousSeries{
XValues: []float64{1.0, 2.0},
YValues: []float64{3.14, 3.14},
},
},
}
xr, yr, yra := c.getRanges()
assert.Nil(c.checkRanges(xr, yr, yra))
}
func at(i image.Image, x, y int) drawing.Color {
return drawing.ColorFromAlphaMixedRGBA(i.At(x, y).RGBA())
}
func TestChartE2ELine(t *testing.T) {
assert := assert.New(t)
c := Chart{
Height: 50,
Width: 50,
Canvas: Style{
Padding: BoxZero,
},
Background: Style{
Padding: BoxZero,
},
Series: []Series{
ContinuousSeries{
XValues: seq.RangeWithStep(0, 4, 1),
YValues: seq.RangeWithStep(0, 4, 1),
},
},
}
var buffer = &bytes.Buffer{}
err := c.Render(PNG, buffer)
assert.Nil(err)
// do color tests ...
i, err := png.Decode(buffer)
assert.Nil(err)
// test the bottom and top of the line
assert.Equal(drawing.ColorWhite, at(i, 0, 0))
assert.Equal(drawing.ColorWhite, at(i, 49, 49))
// test a line mid point
defaultSeriesColor := GetDefaultColor(0)
assert.Equal(defaultSeriesColor, at(i, 0, 49))
assert.Equal(defaultSeriesColor, at(i, 49, 0))
assert.Equal(drawing.ColorFromHex("bddbf6"), at(i, 24, 24))
}
func TestChartE2ELineWithFill(t *testing.T) {
assert := assert.New(t)
c := Chart{
Height: 50,
Width: 50,
Canvas: Style{
Padding: BoxZero,
},
Background: Style{
Padding: BoxZero,
},
Series: []Series{
ContinuousSeries{
Style: Style{
Show: true,
StrokeColor: drawing.ColorBlue,
FillColor: drawing.ColorRed,
},
XValues: seq.RangeWithStep(0, 4, 1),
YValues: seq.RangeWithStep(0, 4, 1),
},
},
}
var buffer = &bytes.Buffer{}
err := c.Render(PNG, buffer)
assert.Nil(err)
// do color tests ...
i, err := png.Decode(buffer)
assert.Nil(err)
// test the bottom and top of the line
assert.Equal(drawing.ColorWhite, at(i, 0, 0))
assert.Equal(drawing.ColorRed, at(i, 49, 49))
// test a line mid point
defaultSeriesColor := drawing.ColorBlue
assert.Equal(defaultSeriesColor, at(i, 0, 49))
assert.Equal(defaultSeriesColor, at(i, 49, 0))
}

42
concat_series_test.go
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@ -1,42 +0,0 @@
package chart
import (
"testing"
assert "github.com/blend/go-sdk/assert"
"git.gutmet.org/go-chart.git/seq"
)
func TestConcatSeries(t *testing.T) {
assert := assert.New(t)
s1 := ContinuousSeries{
XValues: seq.Range(1.0, 10.0),
YValues: seq.Range(1.0, 10.0),
}
s2 := ContinuousSeries{
XValues: seq.Range(11, 20.0),
YValues: seq.Range(10.0, 1.0),
}
s3 := ContinuousSeries{
XValues: seq.Range(21, 30.0),
YValues: seq.Range(1.0, 10.0),
}
cs := ConcatSeries([]Series{s1, s2, s3})
assert.Equal(30, cs.Len())
x0, y0 := cs.GetValue(0)
assert.Equal(1.0, x0)
assert.Equal(1.0, y0)
xm, ym := cs.GetValue(19)
assert.Equal(20.0, xm)
assert.Equal(1.0, ym)
xn, yn := cs.GetValue(29)
assert.Equal(30.0, xn)
assert.Equal(10.0, yn)
}

23
continuous_range_test.go
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@ -1,23 +0,0 @@
package chart
import (
"testing"
"github.com/blend/go-sdk/assert"
"git.gutmet.org/go-chart.git/util"
)
func TestRangeTranslate(t *testing.T) {
assert := assert.New(t)
values := []float64{1.0, 2.0, 2.5, 2.7, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0}
r := ContinuousRange{Domain: 1000}
r.Min, r.Max = util.Math.MinAndMax(values...)
// delta = ~7.0
// value = ~5.0
// domain = ~1000
// 5/8 * 1000 ~=
assert.Equal(0, r.Translate(1.0))
assert.Equal(1000, r.Translate(8.0))
assert.Equal(572, r.Translate(5.0))
}

73
continuous_series_test.go
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@ -1,73 +0,0 @@
package chart
import (
"fmt"
"testing"
assert "github.com/blend/go-sdk/assert"
"git.gutmet.org/go-chart.git/seq"
)
func TestContinuousSeries(t *testing.T) {
assert := assert.New(t)
cs := ContinuousSeries{
Name: "Test Series",
XValues: seq.Range(1.0, 10.0),
YValues: seq.Range(1.0, 10.0),
}
assert.Equal("Test Series", cs.GetName())
assert.Equal(10, cs.Len())
x0, y0 := cs.GetValues(0)
assert.Equal(1.0, x0)
assert.Equal(1.0, y0)
xn, yn := cs.GetValues(9)
assert.Equal(10.0, xn)
assert.Equal(10.0, yn)
xn, yn = cs.GetLastValues()
assert.Equal(10.0, xn)
assert.Equal(10.0, yn)
}
func TestContinuousSeriesValueFormatter(t *testing.T) {
assert := assert.New(t)
cs := ContinuousSeries{
XValueFormatter: func(v interface{}) string {
return fmt.Sprintf("%f foo", v)
},
YValueFormatter: func(v interface{}) string {
return fmt.Sprintf("%f bar", v)
},
}
xf, yf := cs.GetValueFormatters()
assert.Equal("0.100000 foo", xf(0.1))
assert.Equal("0.100000 bar", yf(0.1))
}
func TestContinuousSeriesValidate(t *testing.T) {
assert := assert.New(t)
cs := ContinuousSeries{
Name: "Test Series",
XValues: seq.Range(1.0, 10.0),
YValues: seq.Range(1.0, 10.0),
}
assert.Nil(cs.Validate())
cs = ContinuousSeries{
Name: "Test Series",
XValues: seq.Range(1.0, 10.0),
}
assert.NotNil(cs.Validate())
cs = ContinuousSeries{
Name: "Test Series",
YValues: seq.Range(1.0, 10.0),
}
assert.NotNil(cs.Validate())
}

53
drawing/color_test.go
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@ -1,53 +0,0 @@
package drawing
import (
"testing"
"image/color"
"github.com/blend/go-sdk/assert"
)
func TestColorFromHex(t *testing.T) {
assert := assert.New(t)
white := ColorFromHex("FFFFFF")
assert.Equal(ColorWhite, white)
shortWhite := ColorFromHex("FFF")
assert.Equal(ColorWhite, shortWhite)
black := ColorFromHex("000000")
assert.Equal(ColorBlack, black)
shortBlack := ColorFromHex("000")
assert.Equal(ColorBlack, shortBlack)
red := ColorFromHex("FF0000")
assert.Equal(ColorRed, red)
shortRed := ColorFromHex("F00")
assert.Equal(ColorRed, shortRed)
green := ColorFromHex("00FF00")
assert.Equal(ColorGreen, green)
shortGreen := ColorFromHex("0F0")
assert.Equal(ColorGreen, shortGreen)
blue := ColorFromHex("0000FF")
assert.Equal(ColorBlue, blue)
shortBlue := ColorFromHex("00F")
assert.Equal(ColorBlue, shortBlue)
}
func TestColorFromAlphaMixedRGBA(t *testing.T) {
assert := assert.New(t)
black := ColorFromAlphaMixedRGBA(color.Black.RGBA())
assert.True(black.Equals(ColorBlack), black.String())
white := ColorFromAlphaMixedRGBA(color.White.RGBA())
assert.True(white.Equals(ColorWhite), white.String())
}

35
drawing/curve_test.go
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@ -1,35 +0,0 @@
package drawing
import (
"testing"
assert "github.com/blend/go-sdk/assert"
)
type point struct {
X, Y float64
}
type mockLine struct {
inner []point
}
func (ml *mockLine) LineTo(x, y float64) {
ml.inner = append(ml.inner, point{x, y})
}
func (ml mockLine) Len() int {
return len(ml.inner)
}
func TestTraceQuad(t *testing.T) {
assert := assert.New(t)
// Quad
// x1, y1, cpx1, cpy2, x2, y2 float64
// do the 9->12 circle segment
quad := []float64{10, 20, 20, 20, 20, 10}
liner := &mockLine{}
TraceQuad(liner, quad, 0.5)
assert.NotZero(liner.Len())
}

106
ema_series_test.go
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@ -1,106 +0,0 @@
package chart
import (
"testing"
"github.com/blend/go-sdk/assert"
"git.gutmet.org/go-chart.git/seq"
)
var (
emaXValues = seq.Range(1.0, 50.0)
emaYValues = []float64{
1, 2, 3, 4, 5, 4, 3, 2,
1, 2, 3, 4, 5, 4, 3, 2,
1, 2, 3, 4, 5, 4, 3, 2,
1, 2, 3, 4, 5, 4, 3, 2,
1, 2, 3, 4, 5, 4, 3, 2,
1, 2, 3, 4, 5, 4, 3, 2,
1, 2,
}
emaExpected = []float64{
1,
1.074074074,
1.216735254,
1.422903013,
1.68787316,
1.859141815,
1.943649828,
1.947823915,
1.877614736,
1.886680311,
1.969148437,
2.119581886,
2.33294619,
2.456431658,
2.496695979,
2.459903685,
2.351762671,
2.325706177,
2.375653867,
2.495975803,
2.681459077,
2.779128775,
2.795489607,
2.73656445,
2.607930047,
2.562898191,
2.595276103,
2.699329725,
2.869749746,
2.953471987,
2.956918506,
2.886035654,
2.746329309,
2.691045657,
2.713931163,
2.809195522,
2.971477335,
3.047664199,
3.044133518,
2.966790294,
2.821102124,
2.760279745,
2.778036801,
2.868552593,
3.026437586,
3.098553321,
3.091253075,
3.010419514,
2.86149955,
2.797684768,
}
emaDelta = 0.0001
)
func TestEMASeries(t *testing.T) {
assert := assert.New(t)
mockSeries := mockValuesProvider{
emaXValues,
emaYValues,
}
assert.Equal(50, mockSeries.Len())
ema := &EMASeries{
InnerSeries: mockSeries,
Period: 26,
}
sig := ema.GetSigma()
assert.Equal(2.0/(26.0+1), sig)
var yvalues []float64
for x := 0; x < ema.Len(); x++ {
_, y := ema.GetValues(x)
yvalues = append(yvalues, y)
}
for index, yv := range yvalues {
assert.InDelta(yv, emaExpected[index], emaDelta)
}
lvx, lvy := ema.GetLastValues()
assert.Equal(50.0, lvx)
assert.InDelta(lvy, emaExpected[49], emaDelta)
}

22
first_value_annotation_test.go
View File

@ -1,22 +0,0 @@
package chart
import (
"testing"
"github.com/blend/go-sdk/assert"
)
func TestFirstValueAnnotation(t *testing.T) {
assert := assert.New(t)
series := ContinuousSeries{
XValues: []float64{1.0, 2.0, 3.0, 4.0, 5.0},
YValues: []float64{5.0, 3.0, 3.0, 2.0, 1.0},
}
fva := FirstValueAnnotation(series)
assert.NotEmpty(fva.Annotations)
fvaa := fva.Annotations[0]
assert.Equal(1, fvaa.XValue)
assert.Equal(5, fvaa.YValue)
}

24
grid_line_test.go
View File

@ -1,24 +0,0 @@
package chart
import (
"testing"
"github.com/blend/go-sdk/assert"
)
func TestGenerateGridLines(t *testing.T) {
assert := assert.New(t)
ticks := []Tick{
{Value: 1.0, Label: "1.0"},
{Value: 2.0, Label: "2.0"},
{Value: 3.0, Label: "3.0"},
{Value: 4.0, Label: "4.0"},
}
gl := GenerateGridLines(ticks, Style{}, Style{})
assert.Len(gl, 2)
assert.Equal(2.0, gl[0].Value)
assert.Equal(3.0, gl[1].Value)
}

32
histogram_series_test.go
View File

@ -1,32 +0,0 @@
package chart
import (
"testing"
assert "github.com/blend/go-sdk/assert"
"git.gutmet.org/go-chart.git/seq"
)
func TestHistogramSeries(t *testing.T) {
assert := assert.New(t)
cs := ContinuousSeries{
Name: "Test Series",
XValues: seq.Range(1.0, 20.0),
YValues: seq.Range(10.0, -10.0),
}
hs := HistogramSeries{
InnerSeries: cs,
}
for x := 0; x < hs.Len(); x++ {
csx, csy := cs.GetValues(0)
hsx, hsy1, hsy2 := hs.GetBoundedValues(0)
assert.Equal(csx, hsx)
assert.True(hsy1 > 0)
assert.True(hsy2 <= 0)
assert.True(csy < 0 || (csy > 0 && csy == hsy1))
assert.True(csy > 0 || (csy < 0 && csy == hsy2))
}
}

22
last_value_annotation_test.go
View File

@ -1,22 +0,0 @@
package chart
import (
"testing"
"github.com/blend/go-sdk/assert"
)
func TestLastValueAnnotation(t *testing.T) {
assert := assert.New(t)
series := ContinuousSeries{
XValues: []float64{1.0, 2.0, 3.0, 4.0, 5.0},
YValues: []float64{5.0, 3.0, 3.0, 2.0, 1.0},
}
lva := LastValueAnnotation(series)
assert.NotEmpty(lva.Annotations)
lvaa := lva.Annotations[0]
assert.Equal(5, lvaa.XValue)
assert.Equal(1, lvaa.YValue)
}

31
legend_test.go
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@ -1,31 +0,0 @@
package chart
import (
"bytes"
"testing"
"github.com/blend/go-sdk/assert"
)
func TestLegend(t *testing.T) {
assert := assert.New(t)
graph := Chart{
Series: []Series{
ContinuousSeries{
Name: "A test series",
XValues: []float64{1.0, 2.0, 3.0, 4.0, 5.0},
YValues: []float64{1.0, 2.0, 3.0, 4.0, 5.0},
},
},
}
//note we have to do this as a separate step because we need a reference to graph
graph.Elements = []Renderable{
Legend(&graph),
}
buf := bytes.NewBuffer([]byte{})
err := graph.Render(PNG, buf)
assert.Nil(err)
assert.NotZero(buf.Len())
}

78
linear_regression_series_test.go
View File

@ -1,78 +0,0 @@
package chart
import (
"testing"
assert "github.com/blend/go-sdk/assert"
"git.gutmet.org/go-chart.git/seq"
)
func TestLinearRegressionSeries(t *testing.T) {
assert := assert.New(t)
mainSeries := ContinuousSeries{
Name: "A test series",
XValues: seq.Range(1.0, 100.0),
YValues: seq.Range(1.0, 100.0),
}
linRegSeries := &LinearRegressionSeries{
InnerSeries: mainSeries,
}
lrx0, lry0 := linRegSeries.GetValues(0)
assert.InDelta(1.0, lrx0, 0.0000001)
assert.InDelta(1.0, lry0, 0.0000001)
lrxn, lryn := linRegSeries.GetLastValues()
assert.InDelta(100.0, lrxn, 0.0000001)
assert.InDelta(100.0, lryn, 0.0000001)
}
func TestLinearRegressionSeriesDesc(t *testing.T) {
assert := assert.New(t)
mainSeries := ContinuousSeries{
Name: "A test series",
XValues: seq.Range(100.0, 1.0),
YValues: seq.Range(100.0, 1.0),
}
linRegSeries := &LinearRegressionSeries{
InnerSeries: mainSeries,
}
lrx0, lry0 := linRegSeries.GetValues(0)
assert.InDelta(100.0, lrx0, 0.0000001)
assert.InDelta(100.0, lry0, 0.0000001)
lrxn, lryn := linRegSeries.GetLastValues()
assert.InDelta(1.0, lrxn, 0.0000001)
assert.InDelta(1.0, lryn, 0.0000001)
}
func TestLinearRegressionSeriesWindowAndOffset(t *testing.T) {
assert := assert.New(t)
mainSeries := ContinuousSeries{
Name: "A test series",
XValues: seq.Range(100.0, 1.0),
YValues: seq.Range(100.0, 1.0),
}
linRegSeries := &LinearRegressionSeries{
InnerSeries: mainSeries,
Offset: 10,
Limit: 10,
}
assert.Equal(10, linRegSeries.Len())
lrx0, lry0 := linRegSeries.GetValues(0)
assert.InDelta(90.0, lrx0, 0.0000001)
assert.InDelta(90.0, lry0, 0.0000001)
lrxn, lryn := linRegSeries.GetLastValues()
assert.InDelta(80.0, lrxn, 0.0000001)
assert.InDelta(80.0, lryn, 0.0000001)
}

88
macd_series_test.go
View File

@ -1,88 +0,0 @@
package chart
import (
"fmt"
"testing"
"github.com/blend/go-sdk/assert"
)
var (
macdExpected = []float64{
0,
0.06381766382,
0.1641441222,
0.2817201894,
0.4033023481,
0.3924673744,
0.2983093823,
0.1561821464,
-0.008916708129,
-0.05210332292,
-0.01649503993,
0.06667130899,
0.1751344574,
0.1657328378,
0.08257097469,
-0.04265109369,
-0.1875741257,
-0.2091853882,
-0.1518975486,
-0.04781419838,
0.08025242841,
0.08881960494,
0.02183529775,
-0.08904155476,
-0.2214141128,
-0.2321805992,
-0.1656331722,
-0.05373789678,
0.08083727586,
0.09475354363,
0.03209767112,
-0.07534076818,
-0.2050442354,
-0.2138010557,
-0.1458045181,
-0.03293263556,
0.1022243734,
0.1163957964,
0.05372761902,
-0.05393941791,
-0.1840438454,
-0.1933365048,
-0.1259788988,
-0.01382225715,
0.1205656194,
0.1339326478,
0.07044017167,
-0.03805851969,
-0.1689918111,
-0.1791024416,
}
)
func TestMACDSeries(t *testing.T) {
assert := assert.New(t)
mockSeries := mockValuesProvider{
emaXValues,
emaYValues,
}
assert.Equal(50, mockSeries.Len())
mas := &MACDSeries{
InnerSeries: mockSeries,
}
var yvalues []float64
for x := 0; x < mas.Len(); x++ {
_, y := mas.GetValues(x)
yvalues = append(yvalues, y)
}
assert.NotEmpty(yvalues)
for index, vy := range yvalues {
assert.InDelta(vy, macdExpected[index], emaDelta, fmt.Sprintf("delta @ %d actual: %0.9f expected: %0.9f", index, vy, macdExpected[index]))
}
}

396
matrix/matrix_test.go
View File

@ -1,396 +0,0 @@
package matrix
import (
"testing"
assert "github.com/blend/go-sdk/assert"
)
func TestNew(t *testing.T) {
assert := assert.New(t)
m := New(10, 5)
rows, cols := m.Size()
assert.Equal(10, rows)
assert.Equal(5, cols)
assert.Zero(m.Get(0, 0))
assert.Zero(m.Get(9, 4))
}
func TestNewWithValues(t *testing.T) {
assert := assert.New(t)
m := New(5, 2, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10)
rows, cols := m.Size()
assert.Equal(5, rows)
assert.Equal(2, cols)
assert.Equal(1, m.Get(0, 0))
assert.Equal(10, m.Get(4, 1))
}
func TestIdentitiy(t *testing.T) {
assert := assert.New(t)
id := Identity(5)
rows, cols := id.Size()
assert.Equal(5, rows)
assert.Equal(5, cols)
assert.Equal(1, id.Get(0, 0))
assert.Equal(1, id.Get(1, 1))
assert.Equal(1, id.Get(2, 2))
assert.Equal(1, id.Get(3, 3))
assert.Equal(1, id.Get(4, 4))
assert.Equal(0, id.Get(0, 1))
assert.Equal(0, id.Get(1, 0))
assert.Equal(0, id.Get(4, 0))
assert.Equal(0, id.Get(0, 4))
}
func TestNewFromArrays(t *testing.T) {
assert := assert.New(t)
m := NewFromArrays([][]float64{
{1, 2, 3, 4},
{5, 6, 7, 8},
})
assert.NotNil(m)
rows, cols := m.Size()
assert.Equal(2, rows)
assert.Equal(4, cols)
}
func TestOnes(t *testing.T) {
assert := assert.New(t)
ones := Ones(5, 10)
rows, cols := ones.Size()
assert.Equal(5, rows)
assert.Equal(10, cols)
for row := 0; row < rows; row++ {
for col := 0; col < cols; col++ {
assert.Equal(1, ones.Get(row, col))
}
}
}
func TestMatrixEpsilon(t *testing.T) {
assert := assert.New(t)
ones := Ones(2, 2)
ones = ones.WithEpsilon(0.001)
assert.Equal(0.001, ones.Epsilon())
}
func TestMatrixArrays(t *testing.T) {
assert := assert.New(t)
m := NewFromArrays([][]float64{
{1, 2, 3},
{4, 5, 6},
})
assert.NotNil(m)
arrays := m.Arrays()
assert.Equal(arrays, [][]float64{
{1, 2, 3},
{4, 5, 6},
})
}
func TestMatrixIsSquare(t *testing.T) {
assert := assert.New(t)
assert.False(NewFromArrays([][]float64{
{1, 2, 3},
{4, 5, 6},
}).IsSquare())
assert.False(NewFromArrays([][]float64{
{1, 2},
{3, 4},
{5, 6},
}).IsSquare())
assert.True(NewFromArrays([][]float64{
{1, 2},
{3, 4},
}).IsSquare())
}
func TestMatrixIsSymmetric(t *testing.T) {
assert := assert.New(t)
assert.False(NewFromArrays([][]float64{
{1, 2, 3},
{2, 1, 2},
}).IsSymmetric())
assert.False(NewFromArrays([][]float64{
{1, 2, 3},
{4, 5, 6},
{7, 8, 9},
}).IsSymmetric())
assert.True(NewFromArrays([][]float64{
{1, 2, 3},
{2, 1, 2},
{3, 2, 1},
}).IsSymmetric())
}
func TestMatrixGet(t *testing.T) {
assert := assert.New(t)
m := NewFromArrays([][]float64{
{1, 2, 3},
{4, 5, 6},
{7, 8, 9},
})
assert.Equal(1, m.Get(0, 0))
assert.Equal(2, m.Get(0, 1))
assert.Equal(3, m.Get(0, 2))
assert.Equal(4, m.Get(1, 0))
assert.Equal(5, m.Get(1, 1))
assert.Equal(6, m.Get(1, 2))
assert.Equal(7, m.Get(2, 0))
assert.Equal(8, m.Get(2, 1))
assert.Equal(9, m.Get(2, 2))
}
func TestMatrixSet(t *testing.T) {
assert := assert.New(t)
m := NewFromArrays([][]float64{
{1, 2, 3},
{4, 5, 6},
{7, 8, 9},
})
m.Set(1, 1, 99)
assert.Equal(99, m.Get(1, 1))
}
func TestMatrixCol(t *testing.T) {
assert := assert.New(t)
m := NewFromArrays([][]float64{
{1, 2, 3},
{4, 5, 6},
{7, 8, 9},
})
assert.Equal([]float64{1, 4, 7}, m.Col(0))
assert.Equal([]float64{2, 5, 8}, m.Col(1))
assert.Equal([]float64{3, 6, 9}, m.Col(2))
}
func TestMatrixRow(t *testing.T) {
assert := assert.New(t)
m := NewFromArrays([][]float64{
{1, 2, 3},
{4, 5, 6},
{7, 8, 9},
})
assert.Equal([]float64{1, 2, 3}, m.Row(0))
assert.Equal([]float64{4, 5, 6}, m.Row(1))
assert.Equal([]float64{7, 8, 9}, m.Row(2))
}
func TestMatrixSwapRows(t *testing.T) {
assert := assert.New(t)
m := NewFromArrays([][]float64{
{1, 2, 3},
{4, 5, 6},
{7, 8, 9},
})
m.SwapRows(0, 1)
assert.Equal([]float64{4, 5, 6}, m.Row(0))
assert.Equal([]float64{1, 2, 3}, m.Row(1))
assert.Equal([]float64{7, 8, 9}, m.Row(2))
}
func TestMatrixCopy(t *testing.T) {
assert := assert.New(t)
m := NewFromArrays([][]float64{
{1, 2, 3},
{4, 5, 6},
{7, 8, 9},
})
m2 := m.Copy()
assert.False(m == m2)
assert.True(m.Equals(m2))
}
func TestMatrixDiagonalVector(t *testing.T) {
assert := assert.New(t)
m := NewFromArrays([][]float64{
{1, 4, 7},
{4, 2, 8},
{7, 8, 3},
})
diag := m.DiagonalVector()
assert.Equal([]float64{1, 2, 3}, diag)
}
func TestMatrixDiagonalVectorLandscape(t *testing.T) {
assert := assert.New(t)
m := NewFromArrays([][]float64{
{1, 4, 7, 99},
{4, 2, 8, 99},
})
diag := m.DiagonalVector()
assert.Equal([]float64{1, 2}, diag)
}
func TestMatrixDiagonalVectorPortrait(t *testing.T) {
assert := assert.New(t)
m := NewFromArrays([][]float64{
{1, 4},
{4, 2},
{99, 99},
})
diag := m.DiagonalVector()
assert.Equal([]float64{1, 2}, diag)
}
func TestMatrixDiagonal(t *testing.T) {
assert := assert.New(t)
m := NewFromArrays([][]float64{
{1, 4, 7},
{4, 2, 8},
{7, 8, 3},
})
m2 := NewFromArrays([][]float64{
{1, 0, 0},
{0, 2, 0},
{0, 0, 3},
})
assert.True(m.Diagonal().Equals(m2))
}
func TestMatrixEquals(t *testing.T) {
assert := assert.New(t)
m := NewFromArrays([][]float64{
{1, 4, 7},
{4, 2, 8},
{7, 8, 3},
})
assert.False(m.Equals(nil))
var nilMatrix *Matrix
assert.True(nilMatrix.Equals(nil))
assert.False(m.Equals(New(1, 1)))
assert.False(m.Equals(New(3, 3)))
assert.True(m.Equals(New(3, 3, 1, 4, 7, 4, 2, 8, 7, 8, 3)))
}
func TestMatrixL(t *testing.T) {
assert := assert.New(t)
m := NewFromArrays([][]float64{
{1, 2, 3},
{4, 5, 6},
{7, 8, 9},
})
l := m.L()
assert.True(l.Equals(New(3, 3, 1, 2, 3, 0, 5, 6, 0, 0, 9)))
}
func TestMatrixU(t *testing.T) {
assert := assert.New(t)
m := NewFromArrays([][]float64{
{1, 2, 3},
{4, 5, 6},
{7, 8, 9},
})
u := m.U()
assert.True(u.Equals(New(3, 3, 0, 0, 0, 4, 0, 0, 7, 8, 0)))
}
func TestMatrixString(t *testing.T) {
assert := assert.New(t)
m := NewFromArrays([][]float64{
{1, 2, 3},
{4, 5, 6},
{7, 8, 9},
})
assert.Equal("1 2 3 \n4 5 6 \n7 8 9 \n", m.String())
}
func TestMatrixLU(t *testing.T) {
assert := assert.New(t)
m := NewFromArrays([][]float64{
{1, 3, 5},
{2, 4, 7},
{1, 1, 0},
})
l, u, p := m.LU()
assert.NotNil(l)
assert.NotNil(u)
assert.NotNil(p)
}
func TestMatrixQR(t *testing.T) {
assert := assert.New(t)
m := NewFromArrays([][]float64{
{12, -51, 4},
{6, 167, -68},
{-4, 24, -41},
})
q, r := m.QR()
assert.NotNil(q)
assert.NotNil(r)
}
func TestMatrixTranspose(t *testing.T) {
assert := assert.New(t)
m := NewFromArrays([][]float64{
{1, 2, 3},
{4, 5, 6},
{7, 8, 9},
{10, 11, 12},
})
m2 := m.Transpose()
rows, cols := m2.Size()
assert.Equal(3, rows)
assert.Equal(4, cols)
assert.Equal(1, m2.Get(0, 0))
assert.Equal(10, m2.Get(0, 3))
assert.Equal(3, m2.Get(2, 0))
}

22
matrix/regression_test.go
View File

@ -1,22 +0,0 @@
package matrix
import (
"testing"
assert "github.com/blend/go-sdk/assert"
)
func TestPoly(t *testing.T) {
assert := assert.New(t)
var xGiven = []float64{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10}
var yGiven = []float64{1, 6, 17, 34, 57, 86, 121, 162, 209, 262, 321}
var degree = 2
c, err := Poly(xGiven, yGiven, degree)
assert.Nil(err)
assert.Len(c, 3)
assert.InDelta(c[0], 0.999999999, DefaultEpsilon)
assert.InDelta(c[1], 2, DefaultEpsilon)
assert.InDelta(c[2], 3, DefaultEpsilon)
}

69
pie_chart_test.go
View File

@ -1,69 +0,0 @@
package chart
import (
"bytes"
"testing"
assert "github.com/blend/go-sdk/assert"
)
func TestPieChart(t *testing.T) {
assert := assert.New(t)
pie := PieChart{
Canvas: Style{
FillColor: ColorLightGray,
},
Values: []Value{
{Value: 10, Label: "Blue"},
{Value: 9, Label: "Green"},
{Value: 8, Label: "Gray"},
{Value: 7, Label: "Orange"},
{Value: 6, Label: "HEANG"},
{Value: 5, Label: "??"},
{Value: 2, Label: "!!"},
},
}
b := bytes.NewBuffer([]byte{})
pie.Render(PNG, b)
assert.NotZero(b.Len())
}
func TestPieChartDropsZeroValues(t *testing.T) {
assert := assert.New(t)
pie := PieChart{
Canvas: Style{
FillColor: ColorLightGray,
},
Values: []Value{
{Value: 5, Label: "Blue"},
{Value: 5, Label: "Green"},
{Value: 0, Label: "Gray"},
},
}
b := bytes.NewBuffer([]byte{})
err := pie.Render(PNG, b)
assert.Nil(err)
}
func TestPieChartAllZeroValues(t *testing.T) {
assert := assert.New(t)
pie := PieChart{
Canvas: Style{
FillColor: ColorLightGray,
},
Values: []Value{
{Value: 0, Label: "Blue"},
{Value: 0, Label: "Green"},
{Value: 0, Label: "Gray"},
},
}
b := bytes.NewBuffer([]byte{})
err := pie.Render(PNG, b)
assert.NotNil(err)
}

35
polynomial_regression_test.go
View File

@ -1,35 +0,0 @@
package chart
import (
"testing"
assert "github.com/blend/go-sdk/assert"
"git.gutmet.org/go-chart.git/matrix"
)
func TestPolynomialRegression(t *testing.T) {
assert := assert.New(t)
var xv []float64
var yv []float64
for i := 0; i < 100; i++ {
xv = append(xv, float64(i))
yv = append(yv, float64(i*i))
}
values := ContinuousSeries{
XValues: xv,
YValues: yv,
}
poly := &PolynomialRegressionSeries{
InnerSeries: values,
Degree: 2,
}
for i := 0; i < 100; i++ {
_, y := poly.GetValues(i)
assert.InDelta(float64(i*i), y, matrix.DefaultEpsilon)
}
}

192
seq/buffer_test.go
View File

@ -1,192 +0,0 @@
package seq
import (
"testing"
"github.com/blend/go-sdk/assert"
)
func TestBuffer(t *testing.T) {
assert := assert.New(t)
buffer := NewBuffer()
buffer.Enqueue(1)
assert.Equal(1, buffer.Len())
assert.Equal(1, buffer.Peek())
assert.Equal(1, buffer.PeekBack())
buffer.Enqueue(2)
assert.Equal(2, buffer.Len())
assert.Equal(1, buffer.Peek())
assert.Equal(2, buffer.PeekBack())
buffer.Enqueue(3)
assert.Equal(3, buffer.Len())
assert.Equal(1, buffer.Peek())
assert.Equal(3, buffer.PeekBack())
buffer.Enqueue(4)
assert.Equal(4, buffer.Len())
assert.Equal(1, buffer.Peek())
assert.Equal(4, buffer.PeekBack())
buffer.Enqueue(5)
assert.Equal(5, buffer.Len())
assert.Equal(1, buffer.Peek())
assert.Equal(5, buffer.PeekBack())
buffer.Enqueue(6)
assert.Equal(6, buffer.Len())
assert.Equal(1, buffer.Peek())
assert.Equal(6, buffer.PeekBack())
buffer.Enqueue(7)
assert.Equal(7, buffer.Len())
assert.Equal(1, buffer.Peek())
assert.Equal(7, buffer.PeekBack())
buffer.Enqueue(8)
assert.Equal(8, buffer.Len())
assert.Equal(1, buffer.Peek())
assert.Equal(8, buffer.PeekBack())
value := buffer.Dequeue()
assert.Equal(1, value)
assert.Equal(7, buffer.Len())
assert.Equal(2, buffer.Peek())
assert.Equal(8, buffer.PeekBack())
value = buffer.Dequeue()
assert.Equal(2, value)
assert.Equal(6, buffer.Len())
assert.Equal(3, buffer.Peek())
assert.Equal(8, buffer.PeekBack())
value = buffer.Dequeue()
assert.Equal(3, value)
assert.Equal(5, buffer.Len())
assert.Equal(4, buffer.Peek())
assert.Equal(8, buffer.PeekBack())
value = buffer.Dequeue()
assert.Equal(4, value)
assert.Equal(4, buffer.Len())
assert.Equal(5, buffer.Peek())
assert.Equal(8, buffer.PeekBack())
value = buffer.Dequeue()
assert.Equal(5, value)
assert.Equal(3, buffer.Len())
assert.Equal(6, buffer.Peek())
assert.Equal(8, buffer.PeekBack())
value = buffer.Dequeue()
assert.Equal(6, value)
assert.Equal(2, buffer.Len())
assert.Equal(7, buffer.Peek())
assert.Equal(8, buffer.PeekBack())
value = buffer.Dequeue()
assert.Equal(7, value)
assert.Equal(1, buffer.Len())
assert.Equal(8, buffer.Peek())
assert.Equal(8, buffer.PeekBack())
value = buffer.Dequeue()
assert.Equal(8, value)
assert.Equal(0, buffer.Len())
assert.Zero(buffer.Peek())
assert.Zero(buffer.PeekBack())
}
func TestBufferClear(t *testing.T) {
assert := assert.New(t)
buffer := NewBuffer()
buffer.Enqueue(1)
buffer.Enqueue(1)
buffer.Enqueue(1)
buffer.Enqueue(1)
buffer.Enqueue(1)
buffer.Enqueue(1)
buffer.Enqueue(1)
buffer.Enqueue(1)
assert.Equal(8, buffer.Len())
buffer.Clear()
assert.Equal(0, buffer.Len())
assert.Zero(buffer.Peek())
assert.Zero(buffer.PeekBack())
}
func TestBufferArray(t *testing.T) {
assert := assert.New(t)
buffer := NewBuffer()
buffer.Enqueue(1)
buffer.Enqueue(2)
buffer.Enqueue(3)
buffer.Enqueue(4)
buffer.Enqueue(5)
contents := buffer.Array()
assert.Len(contents, 5)
assert.Equal(1, contents[0])
assert.Equal(2, contents[1])
assert.Equal(3, contents[2])
assert.Equal(4, contents[3])
assert.Equal(5, contents[4])
}
func TestBufferEach(t *testing.T) {
assert := assert.New(t)
buffer := NewBuffer()
for x := 1; x < 17; x++ {
buffer.Enqueue(float64(x))
}
called := 0
buffer.Each(func(_ int, v float64) {
if v == float64(called+1) {
called++
}
})
assert.Equal(16, called)
}
func TestNewBuffer(t *testing.T) {
assert := assert.New(t)
empty := NewBuffer()
assert.NotNil(empty)
assert.Zero(empty.Len())
assert.Equal(bufferDefaultCapacity, empty.Capacity())
assert.Zero(empty.Peek())
assert.Zero(empty.PeekBack())
}
func TestNewBufferWithValues(t *testing.T) {
assert := assert.New(t)
values := NewBuffer(1, 2, 3, 4, 5)
assert.NotNil(values)
assert.Equal(5, values.Len())
assert.Equal(1, values.Peek())
assert.Equal(5, values.PeekBack())
}
func TestBufferGrowth(t *testing.T) {
assert := assert.New(t)
values := NewBuffer(1, 2, 3, 4, 5)
for i := 0; i < 1<<10; i++ {
values.Enqueue(float64(i))
}
assert.Equal(1<<10-1, values.PeekBack())
}

48
seq/linear_test.go
View File

@ -1,48 +0,0 @@
package seq
import (
"testing"
assert "github.com/blend/go-sdk/assert"
)
func TestRange(t *testing.T) {
assert := assert.New(t)
values := Range(1, 100)
assert.Len(values, 100)
assert.Equal(1, values[0])
assert.Equal(100, values[99])
}
func TestRangeWithStep(t *testing.T) {
assert := assert.New(t)
values := RangeWithStep(0, 100, 5)
assert.Equal(100, values[20])
assert.Len(values, 21)
}
func TestRangeReversed(t *testing.T) {
assert := assert.New(t)
values := Range(10.0, 1.0)
assert.Equal(10, len(values))
assert.Equal(10.0, values[0])
assert.Equal(1.0, values[9])
}
func TestValuesRegression(t *testing.T) {
assert := assert.New(t)
// note; this assumes a 1.0 step is implicitly set in the constructor.
linearProvider := NewLinear().WithStart(1.0).WithEnd(100.0)
assert.Equal(1, linearProvider.Start())
assert.Equal(100, linearProvider.End())
assert.Equal(100, linearProvider.Len())
values := Seq{Provider: linearProvider}.Array()
assert.Len(values, 100)
assert.Equal(1.0, values[0])
assert.Equal(100, values[99])
}

20
seq/random_test.go
View File

@ -1,20 +0,0 @@
package seq
import (
"testing"
assert "github.com/blend/go-sdk/assert"
)
func TestRandomRegression(t *testing.T) {
assert := assert.New(t)
randomProvider := NewRandom().WithLen(4096).WithMax(256)
assert.Equal(4096, randomProvider.Len())
assert.Equal(256, *randomProvider.Max())
randomSequence := New(randomProvider)
randomValues := randomSequence.Array()
assert.Len(randomValues, 4096)
assert.InDelta(128, randomSequence.Average(), 10.0)
}

95
seq/seq_test.go
View File

@ -1,95 +0,0 @@
package seq
import (
"testing"
assert "github.com/blend/go-sdk/assert"
)
func TestSequenceEach(t *testing.T) {
assert := assert.New(t)
values := Seq{NewArray(1, 2, 3, 4)}
values.Each(func(i int, v float64) {
assert.Equal(i, v-1)
})
}
func TestSequenceMap(t *testing.T) {
assert := assert.New(t)
values := Seq{NewArray(1, 2, 3, 4)}
mapped := values.Map(func(i int, v float64) float64 {
assert.Equal(i, v-1)
return v * 2
})
assert.Equal(4, mapped.Len())
}
func TestSequenceFoldLeft(t *testing.T) {
assert := assert.New(t)
values := Seq{NewArray(1, 2, 3, 4)}
ten := values.FoldLeft(func(_ int, vp, v float64) float64 {
return vp + v
})
assert.Equal(10, ten)
orderTest := Seq{NewArray(10, 3, 2, 1)}
four := orderTest.FoldLeft(func(_ int, vp, v float64) float64 {
return vp - v
})
assert.Equal(4, four)
}
func TestSequenceFoldRight(t *testing.T) {
assert := assert.New(t)
values := Seq{NewArray(1, 2, 3, 4)}
ten := values.FoldRight(func(_ int, vp, v float64) float64 {
return vp + v
})
assert.Equal(10, ten)
orderTest := Seq{NewArray(10, 3, 2, 1)}
notFour := orderTest.FoldRight(func(_ int, vp, v float64) float64 {
return vp - v
})
assert.Equal(-14, notFour)
}
func TestSequenceSum(t *testing.T) {
assert := assert.New(t)
values := Seq{NewArray(1, 2, 3, 4)}
assert.Equal(10, values.Sum())
}
func TestSequenceAverage(t *testing.T) {
assert := assert.New(t)
values := Seq{NewArray(1, 2, 3, 4)}
assert.Equal(2.5, values.Average())
valuesOdd := Seq{NewArray(1, 2, 3, 4, 5)}
assert.Equal(3, valuesOdd.Average())
}
func TestSequenceVariance(t *testing.T) {
assert := assert.New(t)
values := Seq{NewArray(1, 2, 3, 4, 5)}
assert.Equal(2, values.Variance())
}
func TestSequenceNormalize(t *testing.T) {
assert := assert.New(t)
normalized := Values(1, 2, 3, 4, 5).Normalize().Array()
assert.NotEmpty(normalized)
assert.Len(normalized, 5)
assert.Equal(0, normalized[0])
assert.Equal(0.25, normalized[1])
assert.Equal(1, normalized[4])
}

85
seq/time_test.go
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@ -1,85 +0,0 @@
package seq
import (
"testing"
"time"
assert "github.com/blend/go-sdk/assert"
"git.gutmet.org/go-chart.git/util"
)
func TestTimeHours(t *testing.T) {
assert := assert.New(t)
today := time.Date(2016, 07, 01, 12, 0, 0, 0, time.UTC)
seq := Time.Hours(today, 24)
end := util.Time.End(seq...)
assert.Len(seq, 24)
assert.Equal(2016, end.Year())
assert.Equal(07, int(end.Month()))
assert.Equal(02, end.Day())
assert.Equal(11, end.Hour())
}
func TestSequenceHoursFill(t *testing.T) {
assert := assert.New(t)
xdata := []time.Time{
time.Date(2016, 07, 01, 12, 0, 0, 0, time.UTC),
time.Date(2016, 07, 01, 13, 0, 0, 0, time.UTC),
time.Date(2016, 07, 01, 14, 0, 0, 0, time.UTC),
time.Date(2016, 07, 02, 4, 0, 0, 0, time.UTC),
time.Date(2016, 07, 02, 5, 0, 0, 0, time.UTC),
time.Date(2016, 07, 03, 12, 0, 0, 0, time.UTC),
time.Date(2016, 07, 03, 14, 0, 0, 0, time.UTC),
}
ydata := []float64{
1.1,
1.2,
1.4,
0.8,
2.1,
0.4,
0.6,
}
filledTimes, filledValues := Time.HoursFilled(xdata, ydata)
expected := util.Time.DiffHours(util.Time.Start(xdata...), util.Time.End(xdata...)) + 1
assert.Len(filledTimes, expected)
assert.Equal(len(filledValues), len(filledTimes))
assert.NotZero(filledValues[0])
assert.NotZero(filledValues[len(filledValues)-1])
assert.NotZero(filledValues[16])
}
func TestTimeStart(t *testing.T) {
assert := assert.New(t)
times := []time.Time{
time.Now().AddDate(0, 0, -4),
time.Now().AddDate(0, 0, -2),
time.Now().AddDate(0, 0, -1),
time.Now().AddDate(0, 0, -3),
time.Now().AddDate(0, 0, -5),
}
assert.InTimeDelta(util.Time.Start(times...), times[4], time.Millisecond)
}
func TestTimeEnd(t *testing.T) {
assert := assert.New(t)
times := []time.Time{
time.Now().AddDate(0, 0, -4),
time.Now().AddDate(0, 0, -2),
time.Now().AddDate(0, 0, -1),
time.Now().AddDate(0, 0, -3),
time.Now().AddDate(0, 0, -5),
}
assert.InTimeDelta(util.Time.End(times...), times[2], time.Millisecond)
}

113
sma_series_test.go
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@ -1,113 +0,0 @@
package chart
import (
"testing"
"github.com/blend/go-sdk/assert"
"git.gutmet.org/go-chart.git/seq"
"git.gutmet.org/go-chart.git/util"
)
type mockValuesProvider struct {
X []float64
Y []float64
}
func (m mockValuesProvider) Len() int {
return util.Math.MinInt(len(m.X), len(m.Y))
}
func (m mockValuesProvider) GetValues(index int) (x, y float64) {
if index < 0 {
panic("negative index at GetValue()")
}
if index >= util.Math.MinInt(len(m.X), len(m.Y)) {
panic("index is outside the length of m.X or m.Y")
}
x = m.X[index]
y = m.Y[index]
return
}
func TestSMASeriesGetValue(t *testing.T) {
assert := assert.New(t)
mockSeries := mockValuesProvider{
seq.Range(1.0, 10.0),
seq.Range(10, 1.0),
}
assert.Equal(10, mockSeries.Len())
mas := &SMASeries{
InnerSeries: mockSeries,
Period: 10,
}
var yvalues []float64
for x := 0; x < mas.Len(); x++ {
_, y := mas.GetValues(x)
yvalues = append(yvalues, y)
}
assert.Equal(10.0, yvalues[0])
assert.Equal(9.5, yvalues[1])
assert.Equal(9.0, yvalues[2])
assert.Equal(8.5, yvalues[3])
assert.Equal(8.0, yvalues[4])
assert.Equal(7.5, yvalues[5])
assert.Equal(7.0, yvalues[6])
assert.Equal(6.5, yvalues[7])
assert.Equal(6.0, yvalues[8])
}
func TestSMASeriesGetLastValueWindowOverlap(t *testing.T) {
assert := assert.New(t)
mockSeries := mockValuesProvider{
seq.Range(1.0, 10.0),
seq.Range(10, 1.0),
}
assert.Equal(10, mockSeries.Len())
mas := &SMASeries{
InnerSeries: mockSeries,
Period: 15,
}
var yvalues []float64
for x := 0; x < mas.Len(); x++ {
_, y := mas.GetValues(x)
yvalues = append(yvalues, y)
}
lx, ly := mas.GetLastValues()
assert.Equal(10.0, lx)
assert.Equal(5.5, ly)
assert.Equal(yvalues[len(yvalues)-1], ly)
}
func TestSMASeriesGetLastValue(t *testing.T) {
assert := assert.New(t)
mockSeries := mockValuesProvider{
seq.Range(1.0, 100.0),
seq.Range(100, 1.0),
}
assert.Equal(100, mockSeries.Len())
mas := &SMASeries{
InnerSeries: mockSeries,
Period: 10,
}
var yvalues []float64
for x := 0; x < mas.Len(); x++ {
_, y := mas.GetValues(x)
yvalues = append(yvalues, y)
}
lx, ly := mas.GetLastValues()
assert.Equal(100.0, lx)
assert.Equal(6, ly)
assert.Equal(yvalues[len(yvalues)-1], ly)
}

214
style_test.go
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@ -1,214 +0,0 @@
package chart
import (
"testing"
"github.com/blend/go-sdk/assert"
"git.gutmet.org/golang-freetype.git/truetype"
"git.gutmet.org/go-chart.git/drawing"
)
func TestStyleIsZero(t *testing.T) {
assert := assert.New(t)
zero := Style{}
assert.True(zero.IsZero())
strokeColor := Style{StrokeColor: drawing.ColorWhite}
assert.False(strokeColor.IsZero())
fillColor := Style{FillColor: drawing.ColorWhite}
assert.False(fillColor.IsZero())
strokeWidth := Style{StrokeWidth: 5.0}
assert.False(strokeWidth.IsZero())
fontSize := Style{FontSize: 12.0}
assert.False(fontSize.IsZero())
fontColor := Style{FontColor: drawing.ColorWhite}
assert.False(fontColor.IsZero())
font := Style{Font: &truetype.Font{}}
assert.False(font.IsZero())
}
func TestStyleGetStrokeColor(t *testing.T) {
assert := assert.New(t)
unset := Style{}
assert.Equal(drawing.ColorTransparent, unset.GetStrokeColor())
assert.Equal(drawing.ColorWhite, unset.GetStrokeColor(drawing.ColorWhite))
set := Style{StrokeColor: drawing.ColorWhite}
assert.Equal(drawing.ColorWhite, set.GetStrokeColor())
assert.Equal(drawing.ColorWhite, set.GetStrokeColor(drawing.ColorBlack))
}
func TestStyleGetFillColor(t *testing.T) {
assert := assert.New(t)
unset := Style{}
assert.Equal(drawing.ColorTransparent, unset.GetFillColor())
assert.Equal(drawing.ColorWhite, unset.GetFillColor(drawing.ColorWhite))
set := Style{FillColor: drawing.ColorWhite}
assert.Equal(drawing.ColorWhite, set.GetFillColor())
assert.Equal(drawing.ColorWhite, set.GetFillColor(drawing.ColorBlack))
}
func TestStyleGetStrokeWidth(t *testing.T) {
assert := assert.New(t)
unset := Style{}
assert.Equal(DefaultStrokeWidth, unset.GetStrokeWidth())
assert.Equal(DefaultStrokeWidth+1, unset.GetStrokeWidth(DefaultStrokeWidth+1))
set := Style{StrokeWidth: DefaultStrokeWidth + 2}
assert.Equal(DefaultStrokeWidth+2, set.GetStrokeWidth())
assert.Equal(DefaultStrokeWidth+2, set.GetStrokeWidth(DefaultStrokeWidth+1))
}
func TestStyleGetFontSize(t *testing.T) {
assert := assert.New(t)
unset := Style{}
assert.Equal(DefaultFontSize, unset.GetFontSize())
assert.Equal(DefaultFontSize+1, unset.GetFontSize(DefaultFontSize+1))
set := Style{FontSize: DefaultFontSize + 2}
assert.Equal(DefaultFontSize+2, set.GetFontSize())
assert.Equal(DefaultFontSize+2, set.GetFontSize(DefaultFontSize+1))
}
func TestStyleGetFontColor(t *testing.T) {
assert := assert.New(t)
unset := Style{}
assert.Equal(drawing.ColorTransparent, unset.GetFontColor())
assert.Equal(drawing.ColorWhite, unset.GetFontColor(drawing.ColorWhite))
set := Style{FontColor: drawing.ColorWhite}
assert.Equal(drawing.ColorWhite, set.GetFontColor())
assert.Equal(drawing.ColorWhite, set.GetFontColor(drawing.ColorBlack))
}
func TestStyleGetFont(t *testing.T) {
assert := assert.New(t)
f, err := GetDefaultFont()
assert.Nil(err)
unset := Style{}
assert.Nil(unset.GetFont())
assert.Equal(f, unset.GetFont(f))
set := Style{Font: f}
assert.NotNil(set.GetFont())
}
func TestStyleGetPadding(t *testing.T) {
assert := assert.New(t)
unset := Style{}
assert.True(unset.GetPadding().IsZero())
assert.False(unset.GetPadding(DefaultBackgroundPadding).IsZero())
assert.Equal(DefaultBackgroundPadding, unset.GetPadding(DefaultBackgroundPadding))
set := Style{Padding: DefaultBackgroundPadding}
assert.False(set.GetPadding().IsZero())
assert.Equal(DefaultBackgroundPadding, set.GetPadding())
assert.Equal(DefaultBackgroundPadding, set.GetPadding(Box{
Top: DefaultBackgroundPadding.Top + 1,
Left: DefaultBackgroundPadding.Left + 1,
Right: DefaultBackgroundPadding.Right + 1,
Bottom: DefaultBackgroundPadding.Bottom + 1,
}))
}
func TestStyleWithDefaultsFrom(t *testing.T) {
assert := assert.New(t)
f, err := GetDefaultFont()
assert.Nil(err)
unset := Style{}
set := Style{
StrokeColor: drawing.ColorWhite,
StrokeWidth: 5.0,
FillColor: drawing.ColorWhite,
FontColor: drawing.ColorWhite,
Font: f,
Padding: DefaultBackgroundPadding,
}
coalesced := unset.InheritFrom(set)
assert.Equal(set, coalesced)
}
func TestStyleGetStrokeOptions(t *testing.T) {
assert := assert.New(t)
set := Style{
StrokeColor: drawing.ColorWhite,
StrokeWidth: 5.0,
FillColor: drawing.ColorWhite,
FontColor: drawing.ColorWhite,
Padding: DefaultBackgroundPadding,
}
svgStroke := set.GetStrokeOptions()
assert.False(svgStroke.StrokeColor.IsZero())
assert.NotZero(svgStroke.StrokeWidth)
assert.True(svgStroke.FillColor.IsZero())
assert.True(svgStroke.FontColor.IsZero())
}
func TestStyleGetFillOptions(t *testing.T) {
assert := assert.New(t)
set := Style{
StrokeColor: drawing.ColorWhite,
StrokeWidth: 5.0,
FillColor: drawing.ColorWhite,
FontColor: drawing.ColorWhite,
Padding: DefaultBackgroundPadding,
}
svgFill := set.GetFillOptions()
assert.False(svgFill.FillColor.IsZero())
assert.Zero(svgFill.StrokeWidth)
assert.True(svgFill.StrokeColor.IsZero())
assert.True(svgFill.FontColor.IsZero())
}
func TestStyleGetFillAndStrokeOptions(t *testing.T) {
assert := assert.New(t)
set := Style{
StrokeColor: drawing.ColorWhite,
StrokeWidth: 5.0,
FillColor: drawing.ColorWhite,
FontColor: drawing.ColorWhite,
Padding: DefaultBackgroundPadding,
}
svgFillAndStroke := set.GetFillAndStrokeOptions()
assert.False(svgFillAndStroke.FillColor.IsZero())
assert.NotZero(svgFillAndStroke.StrokeWidth)
assert.False(svgFillAndStroke.StrokeColor.IsZero())
assert.True(svgFillAndStroke.FontColor.IsZero())
}
func TestStyleGetTextOptions(t *testing.T) {
assert := assert.New(t)
set := Style{
StrokeColor: drawing.ColorWhite,
StrokeWidth: 5.0,
FillColor: drawing.ColorWhite,
FontColor: drawing.ColorWhite,
Padding: DefaultBackgroundPadding,
}
svgStroke := set.GetTextOptions()
assert.True(svgStroke.StrokeColor.IsZero())
assert.Zero(svgStroke.StrokeWidth)
assert.True(svgStroke.FillColor.IsZero())
assert.False(svgStroke.FontColor.IsZero())
}

60
text_test.go
View File

@ -1,60 +0,0 @@
package chart
import (
"testing"
assert "github.com/blend/go-sdk/assert"
)
func TestTextWrapWord(t *testing.T) {
assert := assert.New(t)
r, err := PNG(1024, 1024)
assert.Nil(err)
f, err := GetDefaultFont()
assert.Nil(err)
basicTextStyle := Style{Font: f, FontSize: 24}
output := Text.WrapFitWord(r, "this is a test string", 100, basicTextStyle)
assert.NotEmpty(output)
assert.Len(output, 3)
for _, line := range output {
basicTextStyle.WriteToRenderer(r)
lineBox := r.MeasureText(line)
assert.True(lineBox.Width() < 100, line+": "+lineBox.String())
}
assert.Equal("this is", output[0])
assert.Equal("a test", output[1])
assert.Equal("string", output[2])
output = Text.WrapFitWord(r, "foo", 100, basicTextStyle)
assert.Len(output, 1)
assert.Equal("foo", output[0])
// test that it handles newlines.
output = Text.WrapFitWord(r, "this\nis\na\ntest\nstring", 100, basicTextStyle)
assert.Len(output, 5)
// test that it handles newlines and long lines.
output = Text.WrapFitWord(r, "this\nis\na\ntest\nstring that is very long", 100, basicTextStyle)
assert.Len(output, 8)
}
func TestTextWrapRune(t *testing.T) {
assert := assert.New(t)
r, err := PNG(1024, 1024)
assert.Nil(err)
f, err := GetDefaultFont()
assert.Nil(err)
basicTextStyle := Style{Font: f, FontSize: 24}
output := Text.WrapFitRune(r, "this is a test string", 150, basicTextStyle)
assert.NotEmpty(output)
assert.Len(output, 2)
assert.Equal("this is a t", output[0])
assert.Equal("est string", output[1])
}

60
tick_test.go
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@ -1,60 +0,0 @@
package chart
import (
"testing"
assert "github.com/blend/go-sdk/assert"
)
func TestGenerateContinuousTicks(t *testing.T) {
assert := assert.New(t)
f, err := GetDefaultFont()
assert.Nil(err)
r, err := PNG(1024, 1024)
assert.Nil(err)
r.SetFont(f)
ra := &ContinuousRange{
Min: 0.0,
Max: 10.0,
Domain: 256,
}
vf := FloatValueFormatter
ticks := GenerateContinuousTicks(r, ra, false, Style{}, vf)
assert.NotEmpty(ticks)
assert.Len(ticks, 11)
assert.Equal(0.0, ticks[0].Value)
assert.Equal(10, ticks[len(ticks)-1].Value)
}
func TestGenerateContinuousTicksDescending(t *testing.T) {
assert := assert.New(t)
f, err := GetDefaultFont()
assert.Nil(err)
r, err := PNG(1024, 1024)
assert.Nil(err)
r.SetFont(f)
ra := &ContinuousRange{
Min: 0.0,
Max: 10.0,
Domain: 256,
Descending: true,
}
vf := FloatValueFormatter
ticks := GenerateContinuousTicks(r, ra, false, Style{}, vf)
assert.NotEmpty(ticks)
assert.Len(ticks, 11)
assert.Equal(10.0, ticks[0].Value)
assert.Equal(9.0, ticks[1].Value)
assert.Equal(1.0, ticks[len(ticks)-2].Value)
assert.Equal(0.0, ticks[len(ticks)-1].Value)
}

69
time_series_test.go
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@ -1,69 +0,0 @@
package chart
import (
"testing"
"time"
"github.com/blend/go-sdk/assert"
)
func TestTimeSeriesGetValue(t *testing.T) {
assert := assert.New(t)
ts := TimeSeries{
Name: "Test",
XValues: []time.Time{
time.Now().AddDate(0, 0, -5),
time.Now().AddDate(0, 0, -4),
time.Now().AddDate(0, 0, -3),
time.Now().AddDate(0, 0, -2),
time.Now().AddDate(0, 0, -1),
},
YValues: []float64{
1.0, 2.0, 3.0, 4.0, 5.0,
},
}
x0, y0 := ts.GetValues(0)
assert.NotZero(x0)
assert.Equal(1.0, y0)
}
func TestTimeSeriesValidate(t *testing.T) {
assert := assert.New(t)
cs := TimeSeries{
Name: "Test Series",
XValues: []time.Time{
time.Now().AddDate(0, 0, -5),
time.Now().AddDate(0, 0, -4),
time.Now().AddDate(0, 0, -3),
time.Now().AddDate(0, 0, -2),
time.Now().AddDate(0, 0, -1),
},
YValues: []float64{
1.0, 2.0, 3.0, 4.0, 5.0,
},
}
assert.Nil(cs.Validate())
cs = TimeSeries{
Name: "Test Series",
XValues: []time.Time{
time.Now().AddDate(0, 0, -5),
time.Now().AddDate(0, 0, -4),
time.Now().AddDate(0, 0, -3),
time.Now().AddDate(0, 0, -2),
time.Now().AddDate(0, 0, -1),
},
}
assert.NotNil(cs.Validate())
cs = TimeSeries{
Name: "Test Series",
YValues: []float64{
1.0, 2.0, 3.0, 4.0, 5.0,
},
}
assert.NotNil(cs.Validate())
}

148
util/date_test.go
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@ -1,148 +0,0 @@
package util
import (
"testing"
"time"
assert "github.com/blend/go-sdk/assert"
)
func parse(v string) time.Time {
ts, _ := time.Parse("2006-01-02", v)
return ts
}
func TestDateEastern(t *testing.T) {
assert := assert.New(t)
eastern, err := Date.Eastern()
assert.Nil(err)
assert.NotNil(eastern)
}
func TestDateTime(t *testing.T) {
assert := assert.New(t)
ts := Date.Time(5, 6, 7, 8, time.UTC)
assert.Equal(05, ts.Hour())
assert.Equal(06, ts.Minute())
assert.Equal(07, ts.Second())
assert.Equal(8, ts.Nanosecond())
assert.Equal(time.UTC, ts.Location())
}
func TestDateDate(t *testing.T) {
assert := assert.New(t)
ts := Date.Date(2015, 5, 6, time.UTC)
assert.Equal(2015, ts.Year())
assert.Equal(5, ts.Month())
assert.Equal(6, ts.Day())
assert.Equal(time.UTC, ts.Location())
}
func TestDateOnDate(t *testing.T) {
assert := assert.New(t)
eastern := Date.MustEastern()
assert.NotNil(eastern)
ts := Date.OnDate(Date.Time(5, 4, 3, 2, time.UTC), Date.Date(2016, 6, 7, eastern))
assert.Equal(2016, ts.Year())
assert.Equal(6, ts.Month())
assert.Equal(7, ts.Day())
assert.Equal(5, ts.Hour())
assert.Equal(4, ts.Minute())
assert.Equal(3, ts.Second())
assert.Equal(2, ts.Nanosecond())
assert.Equal(time.UTC, ts.Location())
}
func TestDateNoonOnDate(t *testing.T) {
assert := assert.New(t)
noon := Date.NoonOnDate(time.Date(2016, 04, 03, 02, 01, 0, 0, time.UTC))
assert.Equal(2016, noon.Year())
assert.Equal(4, noon.Month())
assert.Equal(3, noon.Day())
assert.Equal(12, noon.Hour())
assert.Equal(0, noon.Minute())
assert.Equal(time.UTC, noon.Location())
}
func TestDateBefore(t *testing.T) {
assert := assert.New(t)
assert.True(Date.Before(parse("2015-07-02"), parse("2016-07-01")))
assert.True(Date.Before(parse("2016-06-01"), parse("2016-07-01")))
assert.True(Date.Before(parse("2016-07-01"), parse("2016-07-02")))
assert.False(Date.Before(parse("2016-07-01"), parse("2016-07-01")))
assert.False(Date.Before(parse("2016-07-03"), parse("2016-07-01")))
assert.False(Date.Before(parse("2016-08-03"), parse("2016-07-01")))
assert.False(Date.Before(parse("2017-08-03"), parse("2016-07-01")))
}
func TestDateBeforeHandlesTimezones(t *testing.T) {
assert := assert.New(t)
tuesdayUTC := time.Date(2016, 8, 02, 22, 00, 0, 0, time.UTC)
mondayUTC := time.Date(2016, 8, 01, 1, 00, 0, 0, time.UTC)
sundayEST := time.Date(2016, 7, 31, 22, 00, 0, 0, Date.MustEastern())
assert.True(Date.Before(sundayEST, tuesdayUTC))
assert.False(Date.Before(sundayEST, mondayUTC))
}
func TestDateNextHour(t *testing.T) {
assert := assert.New(t)
start := time.Date(2015, 07, 01, 9, 30, 0, 0, Date.MustEastern())
next := Date.NextHour(start)
assert.Equal(2015, next.Year())
assert.Equal(07, next.Month())
assert.Equal(01, next.Day())
assert.Equal(10, next.Hour())
assert.Equal(00, next.Minute())
next = Date.NextHour(next)
assert.Equal(11, next.Hour())
next = Date.NextHour(next)
assert.Equal(12, next.Hour())
}
func TestDateNextDayOfWeek(t *testing.T) {
assert := assert.New(t)
weds := Date.Date(2016, 8, 10, time.UTC)
fri := Date.Date(2016, 8, 12, time.UTC)
sun := Date.Date(2016, 8, 14, time.UTC)
mon := Date.Date(2016, 8, 15, time.UTC)
weds2 := Date.Date(2016, 8, 17, time.UTC)
nextFri := Date.NextDayOfWeek(weds, time.Friday)
nextSunday := Date.NextDayOfWeek(weds, time.Sunday)
nextMonday := Date.NextDayOfWeek(weds, time.Monday)
nextWeds := Date.NextDayOfWeek(weds, time.Wednesday)
assert.Equal(fri.Year(), nextFri.Year())
assert.Equal(fri.Month(), nextFri.Month())
assert.Equal(fri.Day(), nextFri.Day())
assert.Equal(sun.Year(), nextSunday.Year())
assert.Equal(sun.Month(), nextSunday.Month())
assert.Equal(sun.Day(), nextSunday.Day())
assert.Equal(mon.Year(), nextMonday.Year())
assert.Equal(mon.Month(), nextMonday.Month())
assert.Equal(mon.Day(), nextMonday.Day())
assert.Equal(weds2.Year(), nextWeds.Year())
assert.Equal(weds2.Month(), nextWeds.Month())
assert.Equal(weds2.Day(), nextWeds.Day())
assert.Equal(time.UTC, nextFri.Location())
assert.Equal(time.UTC, nextSunday.Location())
assert.Equal(time.UTC, nextMonday.Location())
}

151
util/math_test.go
View File

@ -1,151 +0,0 @@
package util
import (
"testing"
"github.com/blend/go-sdk/assert"
)
func TestMinAndMax(t *testing.T) {
assert := assert.New(t)
values := []float64{1.0, 2.0, 3.0, 4.0}
min, max := Math.MinAndMax(values...)
assert.Equal(1.0, min)
assert.Equal(4.0, max)
}
func TestMinAndMaxReversed(t *testing.T) {
assert := assert.New(t)
values := []float64{4.0, 2.0, 3.0, 1.0}
min, max := Math.MinAndMax(values...)
assert.Equal(1.0, min)
assert.Equal(4.0, max)
}
func TestMinAndMaxEmpty(t *testing.T) {
assert := assert.New(t)
values := []float64{}
min, max := Math.MinAndMax(values...)
assert.Equal(0.0, min)
assert.Equal(0.0, max)
}
func TestGetRoundToForDelta(t *testing.T) {
assert := assert.New(t)
assert.Equal(100.0, Math.GetRoundToForDelta(1001.00))
assert.Equal(10.0, Math.GetRoundToForDelta(101.00))
assert.Equal(1.0, Math.GetRoundToForDelta(11.00))
}
func TestRoundUp(t *testing.T) {
assert := assert.New(t)
assert.Equal(0.5, Math.RoundUp(0.49, 0.1))
assert.Equal(1.0, Math.RoundUp(0.51, 1.0))
assert.Equal(0.4999, Math.RoundUp(0.49988, 0.0001))
assert.Equal(0.123, Math.RoundUp(0.123, 0))
}
func TestRoundDown(t *testing.T) {
assert := assert.New(t)
assert.Equal(0.5, Math.RoundDown(0.51, 0.1))
assert.Equal(1.0, Math.RoundDown(1.01, 1.0))
assert.Equal(0.5001, Math.RoundDown(0.50011, 0.0001))
assert.Equal(0.123, Math.RoundDown(0.123, 0))
}
func TestPercentDifference(t *testing.T) {
assert := assert.New(t)
assert.Equal(0.5, Math.PercentDifference(1.0, 1.5))
assert.Equal(-0.5, Math.PercentDifference(2.0, 1.0))
}
func TestNormalize(t *testing.T) {
assert := assert.New(t)
values := []float64{10, 9, 8, 7, 6}
normalized := Math.Normalize(values...)
assert.Len(normalized, 5)
assert.Equal(0.25, normalized[0])
assert.Equal(0.1499, normalized[4])
}
var (
_degreesToRadians = map[float64]float64{
0: 0, // !_2pi b/c no irrational nums in floats.
45: _pi4,
90: _pi2,
135: _3pi4,
180: _pi,
225: _5pi4,
270: _3pi2,
315: _7pi4,
}
_compassToRadians = map[float64]float64{
0: _pi2,
45: _pi4,
90: 0, // !_2pi b/c no irrational nums in floats.
135: _7pi4,
180: _3pi2,
225: _5pi4,
270: _pi,
315: _3pi4,
}
)
func TestDegreesToRadians(t *testing.T) {
assert := assert.New(t)
for d, r := range _degreesToRadians {
assert.Equal(r, Math.DegreesToRadians(d))
}
}
func TestPercentToRadians(t *testing.T) {
assert := assert.New(t)
for d, r := range _degreesToRadians {
assert.Equal(r, Math.PercentToRadians(d/360.0))
}
}
func TestRadiansToDegrees(t *testing.T) {
assert := assert.New(t)
for d, r := range _degreesToRadians {
assert.Equal(d, Math.RadiansToDegrees(r))
}
}
func TestRadianAdd(t *testing.T) {
assert := assert.New(t)
assert.Equal(_pi, Math.RadianAdd(_pi2, _pi2))
assert.Equal(_3pi2, Math.RadianAdd(_pi2, _pi))
assert.Equal(_pi, Math.RadianAdd(_pi, _2pi))
assert.Equal(_pi, Math.RadianAdd(_pi, -_2pi))
}
func TestRotateCoordinate90(t *testing.T) {
assert := assert.New(t)
cx, cy := 10, 10
x, y := 5, 10
rx, ry := Math.RotateCoordinate(cx, cy, x, y, Math.DegreesToRadians(90))
assert.Equal(10, rx)
assert.Equal(5, ry)
}
func TestRotateCoordinate45(t *testing.T) {
assert := assert.New(t)
cx, cy := 10, 10
x, y := 5, 10
rx, ry := Math.RotateCoordinate(cx, cy, x, y, Math.DegreesToRadians(45))
assert.Equal(7, rx)
assert.Equal(7, ry)
}

64
util/time_test.go
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@ -1,64 +0,0 @@
package util
import (
"testing"
"time"
"github.com/blend/go-sdk/assert"
)
func TestTimeDiffDays(t *testing.T) {
assert := assert.New(t)
t1 := time.Date(2017, 02, 27, 12, 0, 0, 0, time.UTC)
t2 := time.Date(2017, 01, 10, 3, 0, 0, 0, time.UTC)
t3 := time.Date(2017, 02, 24, 16, 0, 0, 0, time.UTC)
assert.Equal(48, Time.DiffDays(t2, t1))
assert.Equal(2, Time.DiffDays(t3, t1)) // technically we should round down.
}
func TestTimeDiffHours(t *testing.T) {
assert := assert.New(t)
t1 := time.Date(2017, 02, 27, 12, 0, 0, 0, time.UTC)
t2 := time.Date(2017, 02, 24, 16, 0, 0, 0, time.UTC)
t3 := time.Date(2017, 02, 28, 12, 0, 0, 0, time.UTC)
assert.Equal(68, Time.DiffHours(t2, t1))
assert.Equal(24, Time.DiffHours(t1, t3))
}
func TestTimeStartAndEnd(t *testing.T) {
assert := assert.New(t)
values := []time.Time{
time.Now().AddDate(0, 0, -1),
time.Now().AddDate(0, 0, -2),
time.Now().AddDate(0, 0, -3),
time.Now().AddDate(0, 0, -4),
}
min, max := Time.StartAndEnd(values...)
assert.Equal(values[3], min)
assert.Equal(values[0], max)
}
func TestTimeStartAndEndReversed(t *testing.T) {
assert := assert.New(t)
values := []time.Time{
time.Now().AddDate(0, 0, -4),
time.Now().AddDate(0, 0, -2),
time.Now().AddDate(0, 0, -3),
time.Now().AddDate(0, 0, -1),
}
min, max := Time.StartAndEnd(values...)
assert.Equal(values[0], min)
assert.Equal(values[3], max)
}
func TestTimeStartAndEndEmpty(t *testing.T) {
assert := assert.New(t)
values := []time.Time{}
min, max := Time.StartAndEnd(values...)
assert.Equal(time.Time{}, min)
assert.Equal(time.Time{}, max)
}

59
value_formatter_test.go
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@ -1,59 +0,0 @@
package chart
import (
"testing"
"time"
"github.com/blend/go-sdk/assert"
"git.gutmet.org/go-chart.git/util"
)
func TestTimeValueFormatterWithFormat(t *testing.T) {
assert := assert.New(t)
d := time.Now()
di := util.Time.ToFloat64(d)
df := float64(di)
s := formatTime(d, DefaultDateFormat)
si := formatTime(di, DefaultDateFormat)
sf := formatTime(df, DefaultDateFormat)
assert.Equal(s, si)
assert.Equal(s, sf)
sd := TimeValueFormatter(d)
sdi := TimeValueFormatter(di)
sdf := TimeValueFormatter(df)
assert.Equal(s, sd)
assert.Equal(s, sdi)
assert.Equal(s, sdf)
}
func TestFloatValueFormatter(t *testing.T) {
assert := assert.New(t)
assert.Equal("1234.00", FloatValueFormatter(1234.00))
}
func TestFloatValueFormatterWithFloat32Input(t *testing.T) {
assert := assert.New(t)
assert.Equal("1234.00", FloatValueFormatter(float32(1234.00)))
}
func TestFloatValueFormatterWithIntegerInput(t *testing.T) {
assert := assert.New(t)
assert.Equal("1234.00", FloatValueFormatter(1234))
}
func TestFloatValueFormatterWithInt64Input(t *testing.T) {
assert := assert.New(t)
assert.Equal("1234.00", FloatValueFormatter(int64(1234)))
}
func TestFloatValueFormatterWithFormat(t *testing.T) {
assert := assert.New(t)
v := 123.456
sv := FloatValueFormatterWithFormat(v, "%.3f")
assert.Equal("123.456", sv)
assert.Equal("123.000", FloatValueFormatterWithFormat(123, "%.3f"))
}

69
value_test.go
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@ -1,69 +0,0 @@
package chart
import (
"testing"
assert "github.com/blend/go-sdk/assert"
)
func TestValuesValues(t *testing.T) {
assert := assert.New(t)
vs := []Value{
{Value: 10, Label: "Blue"},
{Value: 9, Label: "Green"},
{Value: 8, Label: "Gray"},
{Value: 7, Label: "Orange"},
{Value: 6, Label: "HEANG"},
{Value: 5, Label: "??"},
{Value: 2, Label: "!!"},
}
values := Values(vs).Values()
assert.Len(values, 7)
assert.Equal(10, values[0])
assert.Equal(9, values[1])
assert.Equal(8, values[2])
assert.Equal(7, values[3])
assert.Equal(6, values[4])
assert.Equal(5, values[5])
assert.Equal(2, values[6])
}
func TestValuesValuesNormalized(t *testing.T) {
assert := assert.New(t)
vs := []Value{
{Value: 10, Label: "Blue"},
{Value: 9, Label: "Green"},
{Value: 8, Label: "Gray"},
{Value: 7, Label: "Orange"},
{Value: 6, Label: "HEANG"},
{Value: 5, Label: "??"},
{Value: 2, Label: "!!"},
}
values := Values(vs).ValuesNormalized()
assert.Len(values, 7)
assert.Equal(0.2127, values[0])
assert.Equal(0.0425, values[6])
}
func TestValuesNormalize(t *testing.T) {
assert := assert.New(t)
vs := []Value{
{Value: 10, Label: "Blue"},
{Value: 9, Label: "Green"},
{Value: 8, Label: "Gray"},
{Value: 7, Label: "Orange"},
{Value: 6, Label: "HEANG"},
{Value: 5, Label: "??"},
{Value: 2, Label: "!!"},
}
values := Values(vs).Normalize()
assert.Len(values, 7)
assert.Equal(0.2127, values[0].Value)
assert.Equal(0.0425, values[6].Value)
}

119
vector_renderer_test.go
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@ -1,119 +0,0 @@
package chart
import (
"bytes"
"fmt"
"strings"
"testing"
"github.com/blend/go-sdk/assert"
"git.gutmet.org/go-chart.git/drawing"
)
func TestVectorRendererPath(t *testing.T) {
assert := assert.New(t)
vr, err := SVG(100, 100)
assert.Nil(err)
typed, isTyped := vr.(*vectorRenderer)
assert.True(isTyped)
typed.MoveTo(0, 0)
typed.LineTo(100, 100)
typed.LineTo(0, 100)
typed.Close()
typed.FillStroke()
buffer := bytes.NewBuffer([]byte{})
err = typed.Save(buffer)
assert.Nil(err)
raw := string(buffer.Bytes())
assert.True(strings.HasPrefix(raw, "<svg"))
assert.True(strings.HasSuffix(raw, "</svg>"))
}
func TestVectorRendererMeasureText(t *testing.T) {
assert := assert.New(t)
f, err := GetDefaultFont()
assert.Nil(err)
vr, err := SVG(100, 100)
assert.Nil(err)
vr.SetDPI(DefaultDPI)
vr.SetFont(f)
vr.SetFontSize(12.0)
tb := vr.MeasureText("Ljp")
assert.Equal(21, tb.Width())
assert.Equal(15, tb.Height())
}
func TestCanvasStyleSVG(t *testing.T) {
assert := assert.New(t)
f, err := GetDefaultFont()
assert.Nil(err)
set := Style{
StrokeColor: drawing.ColorWhite,
StrokeWidth: 5.0,
FillColor: drawing.ColorWhite,
FontColor: drawing.ColorWhite,
Font: f,
Padding: DefaultBackgroundPadding,
}
canvas := &canvas{dpi: DefaultDPI}
svgString := canvas.styleAsSVG(set)
assert.NotEmpty(svgString)
assert.True(strings.HasPrefix(svgString, "style=\""))
assert.True(strings.Contains(svgString, "stroke:rgba(255,255,255,1.0)"))
assert.True(strings.Contains(svgString, "stroke-width:5"))
assert.True(strings.Contains(svgString, "fill:rgba(255,255,255,1.0)"))
assert.True(strings.HasSuffix(svgString, "\""))
}
func TestCanvasClassSVG(t *testing.T) {
as := assert.New(t)
set := Style{
ClassName: "test-class",
}
canvas := &canvas{dpi: DefaultDPI}
as.Equal("class=\"test-class\"", canvas.styleAsSVG(set))
}
func TestCanvasCustomInlineStylesheet(t *testing.T) {
b := strings.Builder{}
canvas := &canvas{
w: &b,
css: ".background { fill: red }",
}
canvas.Start(200, 200)
assert.New(t).Contains(b.String(), fmt.Sprintf(`<style type="text/css"><![CDATA[%s]]></style>`, canvas.css))
}
func TestCanvasCustomInlineStylesheetWithNonce(t *testing.T) {
b := strings.Builder{}
canvas := &canvas{
w: &b,
css: ".background { fill: red }",
nonce: "RAND0MSTRING",
}
canvas.Start(200, 200)
assert.New(t).Contains(b.String(), fmt.Sprintf(`<style type="text/css" nonce="%s"><![CDATA[%s]]></style>`, canvas.nonce, canvas.css))
}

67
xaxis_test.go
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@ -1,67 +0,0 @@
package chart
import (
"testing"
"github.com/blend/go-sdk/assert"
)
func TestXAxisGetTicks(t *testing.T) {
assert := assert.New(t)
r, err := PNG(1024, 1024)
assert.Nil(err)
f, err := GetDefaultFont()
assert.Nil(err)
xa := XAxis{}
xr := &ContinuousRange{Min: 10, Max: 100, Domain: 1024}
styleDefaults := Style{
Font: f,
FontSize: 10.0,
}
vf := FloatValueFormatter
ticks := xa.GetTicks(r, xr, styleDefaults, vf)
assert.Len(ticks, 16)
}
func TestXAxisGetTicksWithUserDefaults(t *testing.T) {
assert := assert.New(t)
r, err := PNG(1024, 1024)
assert.Nil(err)
f, err := GetDefaultFont()
assert.Nil(err)
xa := XAxis{
Ticks: []Tick{{Value: 1.0, Label: "1.0"}},
}
xr := &ContinuousRange{Min: 10, Max: 100, Domain: 1024}
styleDefaults := Style{
Font: f,
FontSize: 10.0,
}
vf := FloatValueFormatter
ticks := xa.GetTicks(r, xr, styleDefaults, vf)
assert.Len(ticks, 1)
}
func TestXAxisMeasure(t *testing.T) {
assert := assert.New(t)
f, err := GetDefaultFont()
assert.Nil(err)
style := Style{
Font: f,
FontSize: 10.0,
}
r, err := PNG(100, 100)
assert.Nil(err)
ticks := []Tick{{Value: 1.0, Label: "1.0"}, {Value: 2.0, Label: "2.0"}, {Value: 3.0, Label: "3.0"}}
xa := XAxis{}
xab := xa.Measure(r, NewBox(0, 0, 100, 100), &ContinuousRange{Min: 1.0, Max: 3.0, Domain: 100}, style, ticks)
assert.Equal(122, xab.Width())
assert.Equal(21, xab.Height())
}

85
yaxis_test.go
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@ -1,85 +0,0 @@
package chart
import (
"testing"
"github.com/blend/go-sdk/assert"
)
func TestYAxisGetTicks(t *testing.T) {
assert := assert.New(t)
r, err := PNG(1024, 1024)
assert.Nil(err)
f, err := GetDefaultFont()
assert.Nil(err)
ya := YAxis{}
yr := &ContinuousRange{Min: 10, Max: 100, Domain: 1024}
styleDefaults := Style{
Font: f,
FontSize: 10.0,
}
vf := FloatValueFormatter
ticks := ya.GetTicks(r, yr, styleDefaults, vf)
assert.Len(ticks, 32)
}
func TestYAxisGetTicksWithUserDefaults(t *testing.T) {
assert := assert.New(t)
r, err := PNG(1024, 1024)
assert.Nil(err)
f, err := GetDefaultFont()
assert.Nil(err)
ya := YAxis{
Ticks: []Tick{{Value: 1.0, Label: "1.0"}},
}
yr := &ContinuousRange{Min: 10, Max: 100, Domain: 1024}
styleDefaults := Style{
Font: f,
FontSize: 10.0,
}
vf := FloatValueFormatter
ticks := ya.GetTicks(r, yr, styleDefaults, vf)
assert.Len(ticks, 1)
}
func TestYAxisMeasure(t *testing.T) {
assert := assert.New(t)
f, err := GetDefaultFont()
assert.Nil(err)
style := Style{
Font: f,
FontSize: 10.0,
}
r, err := PNG(100, 100)
assert.Nil(err)
ticks := []Tick{{Value: 1.0, Label: "1.0"}, {Value: 2.0, Label: "2.0"}, {Value: 3.0, Label: "3.0"}}
ya := YAxis{}
yab := ya.Measure(r, NewBox(0, 0, 100, 100), &ContinuousRange{Min: 1.0, Max: 3.0, Domain: 100}, style, ticks)
assert.Equal(32, yab.Width())
assert.Equal(110, yab.Height())
}
func TestYAxisSecondaryMeasure(t *testing.T) {
assert := assert.New(t)
f, err := GetDefaultFont()
assert.Nil(err)
style := Style{
Font: f,
FontSize: 10.0,
}
r, err := PNG(100, 100)
assert.Nil(err)
ticks := []Tick{{Value: 1.0, Label: "1.0"}, {Value: 2.0, Label: "2.0"}, {Value: 3.0, Label: "3.0"}}
ya := YAxis{AxisType: YAxisSecondary}
yab := ya.Measure(r, NewBox(0, 0, 100, 100), &ContinuousRange{Min: 1.0, Max: 3.0, Domain: 100}, style, ticks)
assert.Equal(32, yab.Width())
assert.Equal(110, yab.Height())
}