package chart import ( "bytes" "strings" "testing" "github.com/blend/go-sdk/assert" "github.com/wcharczuk/go-chart/drawing" ) func TestVectorRendererPath(t *testing.T) { assert := assert.New(t) vr, err := SVG(100, 100) assert.Nil(err) typed, isTyped := vr.(*vectorRenderer) assert.True(isTyped) typed.MoveTo(0, 0) typed.LineTo(100, 100) typed.LineTo(0, 100) typed.Close() typed.FillStroke() buffer := bytes.NewBuffer([]byte{}) err = typed.Save(buffer) assert.Nil(err) raw := string(buffer.Bytes()) assert.True(strings.HasPrefix(raw, "")) } func TestVectorRendererMeasureText(t *testing.T) { assert := assert.New(t) f, err := GetDefaultFont() assert.Nil(err) vr, err := SVG(100, 100) assert.Nil(err) vr.SetDPI(DefaultDPI) vr.SetFont(f) vr.SetFontSize(12.0) tb := vr.MeasureText("Ljp") assert.Equal(21, tb.Width()) assert.Equal(15, tb.Height()) } func TestCanvasStyleSVG(t *testing.T) { assert := assert.New(t) f, err := GetDefaultFont() assert.Nil(err) set := Style{ StrokeColor: drawing.ColorWhite, StrokeWidth: 5.0, FillColor: drawing.ColorWhite, FontColor: drawing.ColorWhite, Font: f, Padding: DefaultBackgroundPadding, } canvas := &canvas{dpi: DefaultDPI} svgString := canvas.styleAsSVG(set) assert.NotEmpty(svgString) assert.True(strings.Contains(svgString, "stroke:rgba(255,255,255,1.0)")) assert.True(strings.Contains(svgString, "stroke-width:5")) assert.True(strings.Contains(svgString, "fill:rgba(255,255,255,1.0)")) }