if got := removeStandardStorageClass(tt.metadata); !reflect.DeepEqual(got, tt.want) {
			t.Errorf("Test %s failed, expected %v, got %v", tt.name, tt.want, got)
		}
	}
}

// Tests CleanMetadata method. Expectation is metadata map
// should be cleared of etag, md5Sum and x-amz-storage-class, if it is set to STANDARD
func TestCleanMetadata(t *testing.T) {
	tests := []struct {
		name     string

	// remove to avoid it from appearing as part of
	// response headers. e.g, X-Minio-* or X-Amz-*.
	// Tags have also been extracted, we remove that as well.
	objInfo.UserDefined = cleanMetadata(fi.Metadata)

	// All the parts per object.
	objInfo.Parts = fi.Parts

	// Update storage class
	if fi.TransitionTier != "" {
		objInfo.StorageClass = fi.TransitionTier