Testing Class Material

hands_on/first/first.py

@@ -0,0 +1,8 @@
+def times_3(x):
+    """ Multiply x by 3.
+
+    Parameters
+    ----------
+    x : The item to multiply by 3.
+    """
+    return x * 3

hands_on/first/test_first.py

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+from first import times_3
+
+
+def test_times_3_integer():
+    value = 7
+    expected = 21
+
+    result = times_3(value)
+
+    assert result == expected
+
+
+def test_times_3_string():
+    value = 'wow'
+    expected = 'wowwowwow'
+
+    result = times_3(value)
+
+    assert result == expected