EndsWith Constraint

EndsWithConstraint tests that a string ends with the expected substring.

Usage

Does.EndWith(string expected)
Does.Not.EndWith(string expected)

Modifiers

.IgnoreCase
.Using(StringComparison comparisonType)
.Using(CultureInfo culture)

Examples

[Test]
public void EndsWithConstraint_Examples()
{
    string phrase = "Make your tests fail before passing!";

    Assert.That(phrase, Does.EndWith("!"));
    Assert.That(phrase, Does.EndWith("passing!"));
    Assert.That(phrase, Does.EndWith("PASSING!").IgnoreCase);
    Assert.That(phrase, Does.Not.EndWith("failing"));
}

Specifying a StringComparison

Assert.That("Hello World!", Does.EndWith("WORLD!").Using(StringComparison.OrdinalIgnoreCase));
Assert.That("Hello World!", Does.EndWith("World!").Using(StringComparison.Ordinal));

Specifying a CultureInfo

The Using(CultureInfo) modifier allows for culture-specific string comparisons. It can be combined with .IgnoreCase for case-insensitive culture-aware comparisons:

// Using Turkish culture where 'i' and 'I' have special casing rules
Assert.That("text TITLE", Does.EndWith("title").IgnoreCase.Using(new CultureInfo("tr-TR")));

// Culture-specific comparison without case-insensitivity
Assert.That("Main Straße", Does.EndWith("Straße").Using(new CultureInfo("de-DE")));

Notes

  1. Only one Using modifier may be specified. Attempting to use multiple Using modifiers will throw an InvalidOperationException.

See Also