Unit Test with Exception

There was a developer came to me, asking me how to perform unit test that check for exception. If the expected exception is thrown, it should consider the test as a success.

We can use ExpectedException attribute to assert exception.

So, here are the sample code:

[TestMethod(), ExpectedException(typeof(ApplicationException),

    "Something is wrong, no exception had been thrown.")]

public void TestMethod1()

{

    //write some code here which will throw ApplicationException

    throw new ApplicationException("Test assert exception");

}