public async Task Catch_DelegateIsNotCalledOnSuccess()
{
// Arrange
var called = false;
var op = AsyncResult.Delay(1).Catch(e => called = true);
// Act
await op;
// Assert
Assert.False(called);
}
public async Task Finally_DelegateIsCalledOnSuccess()
{
// Arrange
var called = false;
var op = AsyncResult.Delay(1).Finally(() => called = true);
// Act
await op;
// Assert
Assert.True(called);
}
public async Task Sequence_CompletesWhenAllOperationsComplete()
{
// Arrange
var op1 = AsyncResult.Delay(1);
var op2 = AsyncResult.Delay(2);
// Act
await Promise.Sequence(() => op1, () => op2);
// Assert
Assert.True(op1.IsCompleted);
Assert.True(op2.IsCompleted);
}
public async Task ThenAny_CompletesWhenAllOperationsComplete()
{
// Arrange
var op1 = AsyncResult.Delay(1);
var op2 = AsyncResult.Delay(2);
var op3 = new AsyncResult();
// Act
await op1.ThenAny(() => new IAsyncOperation[] { op2, op3 });
// Assert
Assert.True(op1.IsCompleted);
Assert.True(op2.IsCompleted);
}
public async Task Catch_CalledIfThenFails()
{
// Arrange
var op = AsyncResult.Delay(10);
var thenOp = op.Then(() => AsyncResult.FaultedOperation);
var catchCalled = false;
var catchOp = thenOp.Catch(e => catchCalled = true);
// Act
await catchOp;
// Assert
Assert.True(thenOp.IsFaulted);
Assert.IsType <Exception>(thenOp.Exception);
Assert.True(catchOp.IsCompletedSuccessfully);
Assert.True(catchCalled);
}
public async Task Sequence_FailsIfAnyOperationFails()
{
// Arrange
var op1 = AsyncResult.Delay(1);
var op2 = Promise.Sequence(() => op1, () => throw new NotImplementedException());
// Act
try
{
await op2;
}
catch (NotImplementedException)
{
}
// Assert
Assert.True(op1.IsCompleted);
Assert.True(op2.IsFaulted);
}
public async Task Then_NotCalledIfPreviousThenFails()
{
// Arrange
var op = AsyncResult.Delay(10);
var thenOp = op.Then(() => AsyncResult.FaultedOperation);
var thenCalled = false;
var thenOp2 = thenOp.Then(() => thenCalled = true);
var catchCalled = false;
var catchOp = thenOp2.Catch(e => catchCalled = true);
// Act
await catchOp;
// Assert
Assert.True(thenOp.IsFaulted);
Assert.True(thenOp2.IsFaulted);
Assert.True(catchOp.IsCompletedSuccessfully);
Assert.True(catchCalled);
Assert.False(thenCalled);
}