Adding upstream version 2.1.2.

Signed-off-by: Daniel Baumann <daniel@debian.org>

vector_renderer_test.go

@@ -0,0 +1,117 @@
+package chart
+
+import (
+	"bytes"
+	"fmt"
+	"strings"
+	"testing"
+
+	"github.com/wcharczuk/go-chart/v2/drawing"
+	"github.com/wcharczuk/go-chart/v2/testutil"
+)
+
+func TestVectorRendererPath(t *testing.T) {
+	// replaced new assertions helper
+
+	vr, err := SVG(100, 100)
+	testutil.AssertNil(t, err)
+
+	typed, isTyped := vr.(*vectorRenderer)
+	testutil.AssertTrue(t, 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)
+	testutil.AssertNil(t, err)
+
+	raw := string(buffer.Bytes())
+
+	testutil.AssertTrue(t, strings.HasPrefix(raw, "<svg"))
+	testutil.AssertTrue(t, strings.HasSuffix(raw, "</svg>"))
+}
+
+func TestVectorRendererMeasureText(t *testing.T) {
+	// replaced new assertions helper
+
+	f, err := GetDefaultFont()
+	testutil.AssertNil(t, err)
+
+	vr, err := SVG(100, 100)
+	testutil.AssertNil(t, err)
+
+	vr.SetDPI(DefaultDPI)
+	vr.SetFont(f)
+	vr.SetFontSize(12.0)
+
+	tb := vr.MeasureText("Ljp")
+	testutil.AssertEqual(t, 21, tb.Width())
+	testutil.AssertEqual(t, 15, tb.Height())
+}
+
+func TestCanvasStyleSVG(t *testing.T) {
+	// replaced new assertions helper
+
+	f, err := GetDefaultFont()
+	testutil.AssertNil(t, 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)
+	testutil.AssertNotEmpty(t, svgString)
+	testutil.AssertTrue(t, strings.HasPrefix(svgString, "style=\""))
+	testutil.AssertTrue(t, strings.Contains(svgString, "stroke:rgba(255,255,255,1.0)"))
+	testutil.AssertTrue(t, strings.Contains(svgString, "stroke-width:5"))
+	testutil.AssertTrue(t, strings.Contains(svgString, "fill:rgba(255,255,255,1.0)"))
+	testutil.AssertTrue(t, strings.HasSuffix(svgString, "\""))
+}
+
+func TestCanvasClassSVG(t *testing.T) {
+	set := Style{
+		ClassName: "test-class",
+	}
+
+	canvas := &canvas{dpi: DefaultDPI}
+
+	testutil.AssertEqual(t, "class=\"test-class\"", canvas.styleAsSVG(set))
+}
+
+func TestCanvasCustomInlineStylesheet(t *testing.T) {
+	b := strings.Builder{}
+
+	canvas := &canvas{
+		w:   &b,
+		css: ".background { fill: red }",
+	}
+
+	canvas.Start(200, 200)
+
+	testutil.AssertContains(t, b.String(), fmt.Sprintf(`<style type="text/css"><![CDATA[%s]]></style>`, canvas.css))
+}
+
+func TestCanvasCustomInlineStylesheetWithNonce(t *testing.T) {
+	b := strings.Builder{}
+
+	canvas := &canvas{
+		w:     &b,
+		css:   ".background { fill: red }",
+		nonce: "RAND0MSTRING",
+	}
+
+	canvas.Start(200, 200)
+
+	testutil.AssertContains(t, b.String(), fmt.Sprintf(`<style type="text/css" nonce="%s"><![CDATA[%s]]></style>`, canvas.nonce, canvas.css))
+}