refactor(tests): fix minor code formatting issues

type_test.go

@@ -26,9 +26,9 @@ func TestDeterminateImageType(t *testing.T) {
 		buf, _ := ioutil.ReadAll(img)
 		defer img.Close()
 
-    if VipsIsTypeSupported(file.expected) {
+		if VipsIsTypeSupported(file.expected) {
-      if DetermineImageType(buf) != file.expected {
+			if DetermineImageType(buf) != file.expected {
-  			t.Fatalf("Image type is not valid: %s != %s", file.name, ImageTypes[file.expected])
+				t.Fatalf("Image type is not valid: %s != %s", file.name, ImageTypes[file.expected])
   		}
     }
 	}
@@ -53,7 +53,7 @@ func TestDeterminateImageTypeName(t *testing.T) {
 		buf, _ := ioutil.ReadAll(img)
 		defer img.Close()
 
-    if DetermineImageTypeName(buf) != file.expected {
+		if DetermineImageTypeName(buf) != file.expected {
 			t.Fatalf("Image type is not valid: %s != %s", file.name, file.expected)
 		}
 	}