Print Function Tests

This is an example of how you can test the output stream of a student defined function. 
This test makes sure the student's function named print_hello() prints "Hello World".  It assumes the student's file name is example.py.  Replace the import with whatever you student's file name is. 
Note:  This code converts the output to all lowercase and removes spaces to compare against the correct value.
Grading Tests:
import unittest
import sys, io
​
class CodingRoomsUnitTests(unittest.TestCase):
​
    def test_default_case(self):
        stdout = sys.stdout
        sys.stdout = io.StringIO()
        import example
        example.print_hello()
        output = sys.stdout.getvalue().strip("\n")
        sys.stdout = stdout
        answer = "Hello World".casefold().replace(" ", "")
        student = output.casefold().replace(" ", "")
        self.assertEqual(answer, student)
​
if __name__ == '__main__':
    unittest.main()
Sample Solution:
example.py
def print_hello():
    print("Hello World")
Last modified 1yr ago