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