public void UnzipData_CalledWithByteArrayParameter_ReturnsString() { string expected = "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua."; var base64String = "H4sIAAAAAAAA/yXM0QkDMQwE0Va2gCOVpAnFEseCZfssqf8Y7nt4853bHFxRDp19bgQT4pYX2hxhLS1rQ5SL0ThuWOeJYXoAjBU+FWm+DuZoVGqNRCW6/M4elu/a4HIPgXQ+JZ8/b3VLR3sAAAA="; byte[] array = Convert.FromBase64String(base64String); string result = _serializationService.UnzipData(array); Assert.False(result.Length == 0); Assert.True(result.Length > array.Length); Assert.Equal(expected, result); }