test: vips determine image types test

vips/types_test.go

@@ -0,0 +1,72 @@
+package vips
+
+import (
+	"github.com/stretchr/testify/require"
+	"os"
+	"testing"
+)
+
+func TestDetermineImageType(t *testing.T) {
+	tests := []struct {
+		name      string
+		path      string
+		imageType ImageType
+	}{
+		{
+			name:      "jpeg",
+			path:      "demo1.jpg",
+			imageType: ImageTypeJPEG,
+		},
+		{
+			name:      "png",
+			path:      "gopher.png",
+			imageType: ImageTypePNG,
+		},
+		{
+			name:      "tiff",
+			path:      "gopher.tiff",
+			imageType: ImageTypeTIFF,
+		},
+		{
+			name:      "heif",
+			path:      "gopher-front.heif",
+			imageType: ImageTypeHEIF,
+		},
+		{
+			name:      "gif",
+			path:      "dancing-banana.gif",
+			imageType: ImageTypeGIF,
+		},
+		{
+			name:      "webp",
+			path:      "demo3.webp",
+			imageType: ImageTypeWEBP,
+		},
+		{
+			name:      "jp2",
+			path:      "gopher.jp2",
+			imageType: ImageTypeJP2K,
+		},
+		{
+			name:      "pdf",
+			path:      "sample.pdf",
+			imageType: ImageTypePDF,
+		},
+		{
+			name:      "svg",
+			path:      "test.svg",
+			imageType: ImageTypeSVG,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			filepath := "../testdata/" + tt.path
+			buf, err := os.ReadFile(filepath)
+			require.NoError(t, err)
+			img, err := LoadImageFromBuffer(buf, nil)
+			require.NoError(t, err)
+			require.Equal(t, tt.imageType, img.Format())
+		})
+	}
+}