go-typst/image_test.go

51 lines
1.0 KiB
Go

package typst_test
import (
"bytes"
"image"
"image/color"
"io"
"testing"
"github.com/Dadido3/go-typst"
)
type testImage struct {
Rect image.Rectangle
}
func (p *testImage) ColorModel() color.Model { return color.RGBAModel }
func (p *testImage) Bounds() image.Rectangle { return p.Rect }
func (p *testImage) At(x, y int) color.Color { return p.RGBAAt(x, y) }
func (p *testImage) RGBAAt(x, y int) color.RGBA {
if !(image.Point{x, y}.In(p.Rect)) {
return color.RGBA{}
}
return color.RGBA{uint8(x), uint8(y), uint8(x + y), 255}
}
// Opaque scans the entire image and reports whether it is fully opaque.
func (p *testImage) Opaque() bool {
return true
}
func TestImage(t *testing.T) {
img := &testImage{image.Rect(0, 0, 255, 255)}
// Wrap image.
typstImage := typst.Image{img}
cli := typst.CLI{}
r := bytes.NewBufferString(`= Image test
#TestImage`)
if err := cli.CompileWithVariables(r, io.Discard, nil, map[string]any{"TestImage": typstImage}); err != nil {
t.Fatalf("Failed to compile document: %v.", err)
}
}