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Will Charczuk mostly working 5f42a58 Feb 13, 2019
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@wcharczuk @davidMis
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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",
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",
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.True(bc.hasAxes())
bc.YAxis = YAxis{
Style: Hidden(),
}
assert.False(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()
bc.YAxis.Style.Hidden = true
ticks := bc.getAxesTicks(r, yr, yf)
assert.Empty(ticks)
bc.YAxis.Style.Hidden = false
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)
}
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