if !reflect.DeepEqual(result, testCase.expectedResult) {
				t.Fatalf("case %v: result: expected: %v, got: %v", i+1, string(testCase.expectedResult), string(result))
			}
		}
	}
}

func testStorageAPIAppendFile(t *testing.T, storage StorageAPI) {
	testData := []byte("foo")
	testCases := []struct {
		volumeName      string
		objectName      string
		data            []byte
		expectErr       bool