package chart import ( "bytes" "math" "testing" assert "github.com/blendlabs/go-assert" ) 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.False(bc.hasAxes()) bc.YAxis = YAxis{ Style: StyleShow(), } assert.True(bc.hasAxes()) }