/// <summary>
/// Replicates <c>DoesNotThrowOrInconclusiveAsync</c> while allowing
/// NUnit <see cref="ResultStateException"/>s to bubble up to the test framework.
/// </summary>
private static async Task DoesNotThrowOrInconclusiveAsync(AsyncTestDelegate code)
{
try
{
await code.Invoke();
}
catch (Exception e) when(e is not ResultStateException)
{
Assert.Fail($"Expected: No Exception to be thrown\nBut was: {e}");
}
}
/// <summary>
/// Verifies that an async delegate throws a particular exception when called.
/// </summary>
/// <param name="expression">A constraint to be satisfied by the exception</param>
/// <param name="code">A TestSnippet delegate</param>
/// <param name="message">The message that will be displayed on failure</param>
/// <param name="args">Arguments to be used in formatting the message</param>
public static Exception ThrowsAsync(IResolveConstraint expression, AsyncTestDelegate code, string message, params object[] args)
{
Exception caughtException = null;
try
{
AwaitUtils.Await(code, code.Invoke());
}
catch (Exception e)
{
caughtException = e;
}
Assert.That(caughtException, expression, message, args);
return(caughtException);
}
/// <summary>
/// Fill-in for NUnit's Assert.ThrowsAsync
/// Source: https://forum.unity.com/threads/can-i-replace-upgrade-unitys-nunit.488580/#post-6543523
/// </summary>
/// <param name="code"></param>
/// <param name="message"></param>
/// <param name="args"></param>
/// <typeparam name="TActual"></typeparam>
/// <returns></returns>
/// <exception cref="Exception"></exception>
public static TActual AssertThrowsAsync <TActual>(AsyncTestDelegate code, string message = "", params object[] args) where TActual : Exception
{
return(Assert.Throws <TActual>(() =>
{
try
{
code.Invoke().Wait(); // Will wrap any exceptions in an AggregateException
}
catch (AggregateException e)
{
if (e.InnerException is null)
{
throw;
}
throw e.InnerException; // Throw the unwrapped exception
}
}, message, args));
}
/// <summary>
/// Executes the code and returns success if an exception is thrown.
/// </summary>
/// <param name="actual">A delegate representing the code to be tested</param>
/// <returns>True if an exception is thrown, otherwise false</returns>
public override ConstraintResult ApplyTo <TActual>(TActual actual)
{
TestDelegate code = actual as TestDelegate;
Exception caughtException = null;
if (code != null)
{
#if ASYNC
if (AwaitUtils.IsAsyncVoid(code))
{
throw new ArgumentException("'async void' methods are not supported. Please use 'async Task' instead.");
}
#endif
try
{
code();
}
catch (Exception ex)
{
caughtException = ex;
}
}
#if ASYNC
AsyncTestDelegate asyncCode = actual as AsyncTestDelegate;
if (asyncCode != null)
{
try
{
AwaitUtils.Await(asyncCode, asyncCode.Invoke());
}
catch (Exception ex)
{
caughtException = ex;
}
}
if (code == null && asyncCode == null)
#else
else
#endif
{
throw new ArgumentException(string.Format("The actual value must be a TestDelegate or AsyncTestDelegate but was {0}", actual.GetType().Name), "actual");
}
return(new ThrowsExceptionConstraintResult(this, caughtException));
}
public Task OneTimeSetUp() => _asyncUserCode.Invoke();
public Task TearDown() => _asyncUserCode.Invoke();
public Task SetUp() => _asyncUserCode.Invoke();
public Task TestMethod() => _asyncUserCode.Invoke();
public Task OneTimeTearDown() => _asyncUserCode.Invoke();
public static void DoesNotThrowAsync(AsyncTestDelegate action)
{
action.Invoke().Wait();
}