tests.
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2 changed files with 79 additions and 3 deletions
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@ -309,7 +309,7 @@ func (bc BarChart) calculateEffectiveBarSpacing(canvasBox Box) int {
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if totalWithBaseSpacing > canvasBox.Width() {
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lessBarWidths := canvasBox.Width() - (len(bc.Bars) * bc.GetBarWidth())
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if lessBarWidths > 0 {
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return int(math.Floor(float64(lessBarWidths) / float64(len(bc.Bars))))
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return int(math.Ceil(float64(lessBarWidths) / float64(len(bc.Bars))))
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}
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return 0
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}
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@ -321,7 +321,7 @@ func (bc BarChart) calculateEffectiveBarWidth(canvasBox Box, spacing int) int {
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if totalWithBaseWidth > canvasBox.Width() {
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totalLessBarSpacings := canvasBox.Width() - (len(bc.Bars) * spacing)
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if totalLessBarSpacings > 0 {
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return int(math.Floor(float64(totalLessBarSpacings) / float64(len(bc.Bars))))
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return int(math.Ceil(float64(totalLessBarSpacings) / float64(len(bc.Bars))))
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}
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return 0
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}
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@ -329,7 +329,7 @@ func (bc BarChart) calculateEffectiveBarWidth(canvasBox Box, spacing int) int {
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}
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func (bc BarChart) calculateTotalBarWidth(barWidth, spacing int) int {
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return len(bc.Bars) * (bc.GetBarWidth() + spacing)
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return len(bc.Bars) * (barWidth + spacing)
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}
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func (bc BarChart) calculateScaledTotalWidth(canvasBox Box) (width, spacing, total int) {
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@ -172,3 +172,79 @@ func TestBarChartGetValueFormatters(t *testing.T) {
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bc.YAxis.ValueFormatter = func(_ interface{}) string { return "test" }
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assert.Equal("test", bc.getValueFormatters()(1234))
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}
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func TestBarChartGetAxesTicks(t *testing.T) {
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assert := assert.New(t)
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bc := BarChart{
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Bars: []Value{
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{Value: 1.0},
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{Value: 2.0},
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{Value: 3.0},
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},
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}
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r, err := PNG(128, 128)
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assert.Nil(err)
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yr := bc.getRanges()
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yf := bc.getValueFormatters()
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ticks := bc.getAxesTicks(r, yr, yf)
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assert.Empty(ticks)
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bc.YAxis.Style.Show = true
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ticks = bc.getAxesTicks(r, yr, yf)
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assert.Len(ticks, 2)
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}
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func TestBarChartCalculateEffectiveBarSpacing(t *testing.T) {
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assert := assert.New(t)
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bc := BarChart{
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Width: 1024,
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BarWidth: 10,
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Bars: []Value{
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{Value: 1.0, Label: "One"},
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{Value: 2.0, Label: "Two"},
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{Value: 3.0, Label: "Three"},
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{Value: 4.0, Label: "Four"},
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{Value: 5.0, Label: "Five"},
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},
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}
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spacing := bc.calculateEffectiveBarSpacing(bc.box())
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assert.NotZero(spacing)
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bc.BarWidth = 250
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spacing = bc.calculateEffectiveBarSpacing(bc.box())
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assert.Zero(spacing)
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}
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func TestBarChartCalculateEffectiveBarWidth(t *testing.T) {
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assert := assert.New(t)
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bc := BarChart{
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Width: 1024,
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BarWidth: 10,
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Bars: []Value{
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{Value: 1.0, Label: "One"},
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{Value: 2.0, Label: "Two"},
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{Value: 3.0, Label: "Three"},
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{Value: 4.0, Label: "Four"},
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{Value: 5.0, Label: "Five"},
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},
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}
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spacing := bc.calculateEffectiveBarSpacing(bc.box())
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assert.NotZero(spacing)
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barWidth := bc.calculateEffectiveBarWidth(bc.box(), spacing)
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assert.Equal(10, barWidth)
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bc.BarWidth = 250
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spacing = bc.calculateEffectiveBarSpacing(bc.box())
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barWidth = bc.calculateEffectiveBarWidth(bc.box(), spacing)
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assert.Equal(199, barWidth)
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assert.Equal(1024, bc.calculateTotalBarWidth(barWidth, spacing))
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}
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