$4.$ Add the Remaining Test Cases

Just because one test case worked does not mean that the function is correct. The function has$\_$a$\_$vowel can be "true in more than one way". For example, it is true when s has just one vowel, like the $"$a$".$ Alternatively, s could be $$o$$ or $"$e$".$

In the activity Designing Test Cases, you were tasked with coming up with several test cases for has$\_$a$\_$vowel. Add all of those to the test script, following the general formula:

Call the function has$\_$a$\_$vowel on the input for the test case.

Store the result of that function call in a variable called result.

Use introcs.assert$\_$equals to compare result to the test case output.

You should have $10$ test cases $($including the one for string $$aeiou$)$ when you are done. Before continuing on$,$ you may wish to check that you did this correctly.