public void BufferedRead() { // Arrange. Specifically use the base class with async signatures. MediaTypeFormatter formatter = new TestableBufferedMediaTypeFormatter(); MemoryStream stream = new MemoryStream(); byte data = 45; stream.WriteByte(data); stream.Position = 0; // Act. Call the async signature. string dummyData = "ignored"; object result = formatter.ReadFromStreamAsync(dummyData.GetType(), stream, null, null).Result; // Assert Assert.Equal(data, result); }