[Added] Exo 1 - fizz_buzz function and its tests

tdd_exo_1.py

+
+
+def fizz_buzz(number: int):
+    if isinstance(number, int) is False:
+        raise TypeError('The paramter "number" must be an integer')
+
+    if number % 3 == 0 and number % 5 == 0:
+        return 'FizzBuzz'
+
+    if number % 3 == 0:
+        return 'Fizz'
+
+    if number % 5 == 0:
+        return 'Buzz'
+
+    return number

tests/test_fizz_buzz.py

+
+import pytest
+from tdd_exo_1 import fizz_buzz
+
+
+class TestFizzBuzz:
+
+    def test_number_not_int(self):
+
+        with pytest.raises(TypeError):
+            fizz_buzz('not_an_int')
+
+    def test_3_multiple(self):
+
+        assert fizz_buzz(6) == 'Fizz'
+
+    def test_5_multiple(self):
+
+        assert fizz_buzz(20) == 'Buzz'
+
+    def test_3_and_5_multiple(self):
+
+        assert fizz_buzz(15) == 'FizzBuzz'
+
+    def test_no_multiple(self):
+
+        assert fizz_buzz(7) == 7