public async ValueTask ElementAtAsync_With_ValidData_Must_Return_Some(int[] source)
{
var wrapped = Wrap.AsAsyncValueEnumerable(source);
for (var index = 0; index < source.Length; index++)
{
// Arrange
var expected =
System.Linq.Enumerable.ElementAt(source, index);
// Act
var result = await AsyncValueEnumerable
.ElementAtAsync <Wrap.AsyncValueEnumerable <int>, Wrap.AsyncEnumerator <int>, int>(wrapped, index);
// Assert
_ = result.Match(
value => value.Must().BeEqualTo(expected),
() => throw new Exception());
}
}
public async void ElementAtAsync_With_OutOfRange_Must_Return_None(int[] source)
{
// Arrange
var wrapped = Wrap.AsAsyncValueEnumerable(source);
// Act
var optionNegative = await AsyncValueEnumerable
.ElementAtAsync <Wrap.AsyncValueEnumerable <int>, Wrap.AsyncEnumerator <int>, int>(wrapped, -1);
var optionTooLarge = await AsyncValueEnumerable
.ElementAtAsync <Wrap.AsyncValueEnumerable <int>, Wrap.AsyncEnumerator <int>, int>(wrapped, source.Length);
// Assert
_ = optionNegative.Must()
.BeOfType <Option <int> >()
.EvaluateTrue(option => option.IsNone);
_ = optionTooLarge.Must()
.BeOfType <Option <int> >()
.EvaluateTrue(option => option.IsNone);
}