ArgsTests.ActionTests.ArgActionInvokeThrowsOnNullAction C# (CSharp) Метод

        public void ArgActionInvokeThrowsOnNullAction()
        {
            var args = new string[] { };
            var argAction = new ArgAction<ActionTestArgs>();
            
            // Not setting .ActionArgs or .Args to leave them as null.

            try
            {
                argAction.Invoke();
                Assert.Fail("Should have thrown an exception.");
            }
            catch (Exception ex)
            {
                Assert.IsInstanceOfType(ex, typeof(MissingArgException));
                Assert.AreEqual("No action was specified", ex.Message);
            }
        }