public async Task ReturnSelectedWhenCompleted()
{
(await SlowCollection.SelectAsync(i => i.ToString())).Should().ContainInOrder(new string[] { "1", "2", "3", "4" });
}
public async Task ReturnFirstWhenCompleted()
{
(await SlowSingleItemCollection.FirstAsync()).Should().Be(1);
(await SlowCollection.FirstAsync()).Should().Be(1);
}
public async Task ReturnFilteredWhenCompleted()
{
(await SlowCollection.WhereAsync(i => i % 2 == 0)).Should().OnlyContain(i => i % 2 == 0);
}
public async Task ReturnSingleWhenCompleted()
{
(await SlowSingleItemCollection.SingleAsync()).Should().Be(1);
((Func <Task>)(async() => await SlowCollection.SingleAsync())).Should().Throw <InvalidOperationException>();
}