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Return Function Tests

Each example assumes the students file name is example#.py replacing # with the actual example number.  You can call the functions by importing the student file name of your choice. 
Example 1 - Add Five
Students write an function named add_five() that takes an integer as a parameter and returns 5 plus the parameter value. 
Grading Tests:
import unittest
​
class CodingRoomsUnitTests(unittest.TestCase):
​
    def test_default_case(self):
        import example1
        self.assertEqual(10, example1.add_five(5))
        self.assertEqual(5, example1.add_five(0))
        self.assertEqual(11, example1.add_five(6))
Sample Solution:
example1.py
def add_five(number):
    number += 5
    return number
Example 2 - Average
Students write a function that takes 5 values as parameters and returns the average value of the 5 values.  The function must be named average() and it must have 5 parameters. 
Example: Calling average(1, 5, 7, 4, 10) would return 5.4.
Note: Almost Equal assertion is used with a delta value as tolerance when comparing values.
Grading Tests:
import unittest
import sys, io
​
class CodingRoomsUnitTests(unittest.TestCase):
​
    def test_default_case(self):
        import example2
        self.assertAlmostEqual(5.4, example2.average(1, 5, 7, 4, 10), delta=0.001)
        self.assertAlmostEqual(9.6, example2.average(5, 9, 24, 6, 4), delta=0.001)
       
if __name__ == '__main__':
    unittest.main()
Sample Solution:
example2.py
def average(a, b, c, d, e):
    sum = a + b + c + d + e
    return sum / 5
Example 3 - Repeats
Students write a function that takes a parameter. If the String parameter has a double letter (i.e. contains the same letter twice in a row) then it should return true. Otherwise, it should return false.
This function must be named has_repeat() and have a parameter. This function must return a boolean.
Grading Tests:
import unittest
import sys, io
​
class CodingRoomsUnitTests(unittest.TestCase):
​
    def test_default_case(self):
        import example3
        self.assertTrue(example3.has_repeat("mississippi"))
        self.assertFalse(example3.has_repeat("capsized"))
        self.assertTrue(example3.has_repeat("mazzone"))
        self.assertFalse(example3.has_repeat("this"))
       
if __name__ == '__main__':
    unittest.main()
Sample Solution:
example3.py
def has_repeat(word):
    count = 0
    for letter in word:
        if letter == word[count-1]:
            return True
        count += 1
    return False

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