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ClassicAssert.IsInstanceOf

docs/articles/nunit/writing-tests/assertions/classic-assertions/Assert.IsInstanceOf.md

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ClassicAssert.IsInstanceOf

ClassicAssert.IsInstanceOf succeeds if the object provided as an actual value is an instance of the expected type.

csharp
ClassicAssert.IsInstanceOf(Type expected, object actual);
ClassicAssert.IsInstanceOf(Type expected, object actual,
                    string message, params object[] params);
ClassicAssert.IsInstanceOf<T>(object actual);
ClassicAssert.IsInstanceOf<T>(object actual,
                       string message, params object[] params);

See Also