Assert.Fail

The Assert.Fail method provides you with the ability to generate a failure based on tests that are not encapsulated by the other methods. It is also useful in developing your own project-specific assertions.

Assert.Fail();
Assert.Fail(string message, params object[] parms);

Here's an example of its use to create a private assertion that tests whether a string contains an expected value.

public void AssertStringContains(string expected, string actual)
{
    AssertStringContains(expected, actual, string.Empty);
}

public void AssertStringContains(string expected, string actual, string message)
{
    if (actual.IndexOf(expected) < 0)
        Assert.Fail(message);
}

See also...

• Assert.Pass
• Assert.Ignore
• Assert.Inconclusive