public void Contains()
{
Assert.ThrowsExact <ArgumentNullException>(() => Assert.Contains <int>(null, 1));
Assert.ThrowsExact <ArgumentNullException>(() => Assert.Contains("ABC", 'c', null as IEqualityComparer <char>));
Assert.ThrowsExact <ArgumentException>(() => Assert.Contains <int>(new int[] { }, 1));
Assert.ThrowsExact <AssertionException>(() => Assert.Contains(new int[] { 2 }, 1));
Assert.DoesNotThrow(() => Assert.Contains(new int[] { 2 }, 2));
Assert.DoesNotThrow(() => Assert.Contains("ABC", 'c', new CharCaseInvariantComparer()));
Assert.ThrowsExact <AssertionException>(() => Assert.Contains("ABC", 'd', new CharCaseInvariantComparer()));
}