public async Task VerifyTimeoutOnReadAsync(Func <Stream, Task <string> > readAsync)
{
// Arrange
var expectedDownload = "download";
var expectedMilliseconds = 25;
var memoryStream = GetStream("foobar");
var slowStream = new SlowStream(memoryStream)
{
DelayPerByte = TimeSpan.FromMilliseconds(expectedMilliseconds * 2)
};
var timeoutStream = new DownloadTimeoutStream(
expectedDownload,
slowStream,
TimeSpan.FromMilliseconds(expectedMilliseconds));
// Act & Assert
var exception = await Assert.ThrowsAsync <IOException>(() =>
readAsync(timeoutStream));
Assert.Equal(
$"The download of '{expectedDownload}' timed out because " +
$"no data was received for {expectedMilliseconds}ms.",
exception.Message);
Assert.IsType <TimeoutException>(exception.InnerException);
}
public async Task VerifyFailureOnReadAsync(Func <Stream, Task <string> > readAsync)
{
// Arrange
var expected = new IOException();
var memoryStream = GetStream("foobar");
var slowStream = new SlowStream(memoryStream)
{
OnRead = (buffer, offset, count) => { throw expected; }
};
var timeoutStream = new DownloadTimeoutStream(
"download",
slowStream,
TimeSpan.FromSeconds(1));
// Act & Assert
var actual = await Assert.ThrowsAsync <IOException>(() =>
readAsync(timeoutStream));
Assert.Same(expected, actual);
}
