120 lines
2.2 KiB
Go
120 lines
2.2 KiB
Go
package chart
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import (
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"image/color"
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"testing"
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"github.com/blendlabs/go-assert"
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"github.com/wcharczuk/go-chart/drawing"
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)
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func TestAnnotationSeriesMeasure(t *testing.T) {
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assert := assert.New(t)
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as := AnnotationSeries{
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Style: Style{
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Show: true,
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},
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Annotations: []Value2{
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{XValue: 1.0, YValue: 1.0, Label: "1.0"},
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{XValue: 2.0, YValue: 2.0, Label: "2.0"},
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{XValue: 3.0, YValue: 3.0, Label: "3.0"},
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{XValue: 4.0, YValue: 4.0, Label: "4.0"},
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},
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}
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r, err := PNG(110, 110)
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assert.Nil(err)
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f, err := GetDefaultFont()
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assert.Nil(err)
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xrange := &ContinuousRange{
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Min: 1.0,
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Max: 4.0,
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Domain: 100,
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}
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yrange := &ContinuousRange{
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Min: 1.0,
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Max: 4.0,
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Domain: 100,
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}
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cb := Box{
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Top: 5,
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Left: 5,
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Right: 105,
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Bottom: 105,
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}
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sd := Style{
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FontSize: 10.0,
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Font: f,
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}
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box := as.Measure(r, cb, xrange, yrange, sd)
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assert.False(box.IsZero())
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assert.Equal(-5.0, box.Top)
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assert.Equal(5.0, box.Left)
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assert.Equal(147.0, box.Right) //the top,left annotation sticks up 5px and out ~44px.
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assert.Equal(115.0, box.Bottom)
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}
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func TestAnnotationSeriesRender(t *testing.T) {
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assert := assert.New(t)
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as := AnnotationSeries{
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Style: Style{
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Show: true,
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FillColor: drawing.ColorWhite,
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StrokeColor: drawing.ColorBlack,
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},
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Annotations: []Value2{
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{XValue: 1.0, YValue: 1.0, Label: "1.0"},
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{XValue: 2.0, YValue: 2.0, Label: "2.0"},
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{XValue: 3.0, YValue: 3.0, Label: "3.0"},
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{XValue: 4.0, YValue: 4.0, Label: "4.0"},
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},
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}
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r, err := PNG(110, 110)
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assert.Nil(err)
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f, err := GetDefaultFont()
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assert.Nil(err)
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xrange := &ContinuousRange{
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Min: 1.0,
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Max: 4.0,
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Domain: 100,
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}
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yrange := &ContinuousRange{
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Min: 1.0,
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Max: 4.0,
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Domain: 100,
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}
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cb := Box{
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Top: 5,
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Left: 5,
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Right: 105,
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Bottom: 105,
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}
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sd := Style{
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FontSize: 10.0,
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Font: f,
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}
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as.Render(r, cb, xrange, yrange, sd)
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rr, isRaster := r.(*rasterRenderer)
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assert.True(isRaster)
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assert.NotNil(rr)
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c := rr.i.At(38, 70)
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converted, isRGBA := color.RGBAModel.Convert(c).(color.RGBA)
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assert.True(isRGBA)
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assert.Equal(0, converted.R)
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assert.Equal(0, converted.G)
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assert.Equal(0, converted.B)
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}
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