public void TestTest() { Class1 target = new Class1(); string value = null; int actual; try { actual = target.Test(value); } catch (ArgumentNullException) { // continue } value = string.Empty; int expected = 0; actual = target.Test(value); Assert.AreEqual(expected, actual); value = "test"; expected = 4; actual = target.Test(value); Assert.AreEqual(expected, actual); }