public void WriteSampleObjectUsingFormatter_UnwrapsAggregateException()
{
Mock<MediaTypeFormatter> bogusFormatter = new Mock<MediaTypeFormatter>();
bogusFormatter.Setup(f => f.CanWriteType(It.IsAny<Type>())).Returns(true);
bogusFormatter.Setup(f => f.WriteToStreamAsync(It.IsAny<Type>(), It.IsAny<object>(), It.IsAny<Stream>(), It.IsAny<HttpContent>(), It.IsAny<TransportContext>())).Returns(() =>
{
throw new AggregateException(new FormatException("Invalid format."));
});
HelpPageSampleGenerator sampleGenerator = new HelpPageSampleGenerator();
InvalidSample sampleNotProvided = Assert.IsType<InvalidSample>(
sampleGenerator.WriteSampleObjectUsingFormatter(
bogusFormatter.Object,
"hello world",
typeof(string),
new MediaTypeHeaderValue("text/json")
));
Assert.Equal("An exception has occurred while using the formatter 'MediaTypeFormatterProxy' to generate sample for media type 'text/json'. Exception message: Invalid format.",
sampleNotProvided.ErrorMessage);
}
public void WriteSampleObjectUsingFormatter_TryFormattingNonJsonSamples_DoesNotThrow()
{
Mock<MediaTypeFormatter> customFormatter = new Mock<MediaTypeFormatter>();
customFormatter.Setup(f => f.CanWriteType(It.IsAny<Type>())).Returns(true);
customFormatter.Setup(f => f.WriteToStreamAsync(It.IsAny<Type>(), It.IsAny<object>(), It.IsAny<Stream>(), It.IsAny<HttpContent>(), It.IsAny<TransportContext>())).Returns(
(Type type, object obj, Stream stream, HttpContent content, TransportContext context) =>
{
StreamWriter writer = new StreamWriter(stream);
writer.Write("some\r\nnon <json> string");
writer.Flush();
TaskCompletionSource<object> tcs = new TaskCompletionSource<object>();
tcs.SetResult(null);
return tcs.Task;
});
HelpPageSampleGenerator sampleGenerator = new HelpPageSampleGenerator();
TextSample sample = Assert.IsType<TextSample>(
sampleGenerator.WriteSampleObjectUsingFormatter(
customFormatter.Object,
"hello world",
typeof(string),
new MediaTypeHeaderValue("text/json")
));
Assert.Equal("some\r\nnon <json> string", sample.Text);
}