public void ReverseMatches(int[] input)
{
int[] expectedResults = new int[input.Length];
for (int i = 0; i < input.Length; i++)
{
expectedResults[i] = input[input.Length - 1 - i];
}
Assert.NotSame(input, Enumerable.Reverse(input));
Assert.Equal(expectedResults, input.Reverse());
Assert.Equal(expectedResults, new TestCollection <int>(input).Reverse());
Assert.Equal(expectedResults, new TestEnumerable <int>(input).Reverse());
Assert.Equal(expectedResults, new TestReadOnlyCollection <int>(input).Reverse());
Assert.Equal(expectedResults.Select(i => i * 2), input.Select(i => i * 2).Reverse());
Assert.Equal(expectedResults.Where(i => true).Select(i => i * 2), input.Where(i => true).Select(i => i * 2).Reverse());
Assert.Equal(expectedResults.Where(i => false).Select(i => i * 2), input.Where(i => false).Select(i => i * 2).Reverse());
}
// [Fact]
public void InvalidArguments()
{
Assert.Throws <ArgumentNullException>("source", () => Enumerable.Reverse <string>(null));
}
