go-chart/xaxis_test.go

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package chart
import (
"testing"
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"github.com/blend/go-sdk/assert"
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)
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}
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styleDefaults := Style{
Font: f,
FontSize: 10.0,
}
vf := FloatValueFormatter
ticks := xa.GetTicks(r, xr, styleDefaults, vf)
assert.Len(ticks, 16)
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}
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{
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Ticks: []Tick{{Value: 1.0, Label: "1.0"}},
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}
xr := &ContinuousRange{Min: 10, Max: 100, Domain: 1024}
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styleDefaults := Style{
Font: f,
FontSize: 10.0,
}
vf := FloatValueFormatter
ticks := xa.GetTicks(r, xr, styleDefaults, vf)
assert.Len(ticks, 1)
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}
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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)
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assert.Equal(122, xab.Width())
assert.Equal(21, xab.Height())
}