img2gif

pkg/rotate/push_test.go

@@ -0,0 +1,38 @@
+package rotate
+
+import (
+	"image"
+	"image/png"
+	"net/http"
+	"os"
+	"testing"
+	"math"
+)
+
+func TestRender(t *testing.T) {
+	gopherImg, err := func() (image.Image, error) {
+		r, err := http.Get("https://go.dev/images/favicon-gopher.png")
+		defer r.Body.Close()
+		if err != nil {
+			return nil, err
+		}
+		img, err := png.Decode(r.Body)
+		if err != nil {
+			return nil, err
+		}
+		return img, nil
+	}()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	f, err := os.Create("img.png")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer f.Close()
+	err = png.Encode(f, Rotate(gopherImg, math.Pi/6))
+	if err != nil {
+		t.Fatal(err)
+	}
+}