feat(metadata): add tests

metadata_test.go

@@ -0,0 +1,59 @@
+package bimg
+
+import (
+	"io/ioutil"
+	"os"
+	"path"
+	"testing"
+)
+
+func TestSize(t *testing.T) {
+	files := []struct {
+		name   string
+		width  int
+		height int
+	}{
+		{"test.jpg", 1680, 1050},
+		{"test.png", 400, 300},
+		{"test.webp", 550, 368},
+	}
+
+	for _, file := range files {
+		size, err := Size(readFile(file.name))
+		if err != nil {
+			t.Fatalf("Cannot read the image: %#v", err)
+		}
+
+		if size.Width != file.width || size.Height != file.height {
+			t.Fatalf("Unexpected image size: %dx%d", size.Width, size.Height)
+		}
+	}
+}
+
+func TestMetadata(t *testing.T) {
+	files := []struct {
+		name   string
+		format string
+	}{
+		{"test.jpg", "jpeg"},
+		{"test.png", "png"},
+		{"test.webp", "webp"},
+	}
+
+	for _, file := range files {
+		size, err := Metadata(readFile(file.name))
+		if err != nil {
+			t.Fatalf("Cannot read the image: %#v", err)
+		}
+
+		if size.Type != file.format {
+			t.Fatalf("Unexpected image format: %s", file.format)
+		}
+	}
+}
+
+func readFile(file string) []byte {
+	data, _ := os.Open(path.Join("fixtures", file))
+	buf, _ := ioutil.ReadAll(data)
+	return buf
+}