public async ValueTask CountAsync_With_ValidData_Must_Succeed(int[] source)
{
// Arrange
var wrapped = Wrap
.AsAsyncValueEnumerable(source);
var expected =
System.Linq.Enumerable.Count(source);
// Act
var result = await AsyncValueEnumerable
.CountAsync <Wrap.AsyncValueEnumerable <int>, Wrap.AsyncEnumerator <int>, int>(wrapped);
// Assert
_ = result.Must()
.BeEqualTo(expected);
}