Code three tests: 1) for a student who has courses 2) for student who does not have courses 3) a non-existing student ID. For each test, display the value of the student ID that was passed to the...

Code three tests:

1) for a student who has courses

2) for student who does not have courses

3) a non-existing student ID. For each test, display the value of the student ID that was passed to the function and the result returned by the function. Also, run a supportive SELECT query or queries that prove the test results are correct.