public void CompletedEvent()
{
// Arrange
bool premature = true;
bool eventFired = false;
OutstandingAsyncOperations ops = new OutstandingAsyncOperations();
ops.Completed += (sender, eventArgs) => {
if (premature)
{
Assert.Fail("Event fired too early!");
}
if (eventFired)
{
Assert.Fail("Event fired multiple times.");
}
Assert.AreEqual(ops, sender);
Assert.AreEqual(eventArgs, EventArgs.Empty);
eventFired = true;
};
// Act & assert
ops.Increment(); // should not fire event (will throw exception)
premature = false;
ops.Decrement(); // should fire event
Assert.IsTrue(eventFired);
ops.Increment(); // should not fire event (will throw exception)
}
public void CountStartsAtZero()
{
// Arrange
OutstandingAsyncOperations ops = new OutstandingAsyncOperations();
// Act & assert
Assert.AreEqual(0, ops.Count);
}
public void IncrementWithNoArguments()
{
// Arrange
OutstandingAsyncOperations ops = new OutstandingAsyncOperations();
// Act
int returned = ops.Increment();
int newCount = ops.Count;
// Assert
Assert.AreEqual(1, returned);
Assert.AreEqual(1, newCount);
}
public void DecrementWithIntegerArgument()
{
// Arrange
OutstandingAsyncOperations ops = new OutstandingAsyncOperations();
// Act
int returned = ops.Decrement(3);
int newCount = ops.Count;
// Assert
Assert.AreEqual(-3, returned);
Assert.AreEqual(-3, newCount);
}