Testing Class Material

material/code.py

@@ -0,0 +1,106 @@
+"""
+This is code that is copy-and-pasted in the slides.
+"""
+
+
+def test_arithmetic():
+    assert 1 == 1
+    assert 2 * 3 == 6
+
+def test_len_list():
+    lst = ['a', 'b', 'c']
+    assert len(lst) == 3
+
+def test_various():
+    assert 'Hi'.islower()
+    assert 2 + 1 == 3
+    assert [2] + [1] == [2, 1]
+    assert 'a' + 'b' != 'ab'
+
+
+def test_1_and_2():
+    assert 1 + 2 == 3
+
+def test_1_and_2_float():
+    assert 1.1 + 2.2 == 3.3
+
+
+from math import isclose
+
+def test_floating_point_math():
+    assert isclose(1.1 + 2.2, 3.3)
+
+def test_floating_point_math2():
+    assert isclose(1.121, 1.2, abs_tol=1e-1)
+    assert isclose(1.121, 1.2, abs_tol=1e-2)
+
+def test_floating_point_math3():
+    assert isclose(120.1, 121.4, rel_tol=1e-1)
+    assert isclose(120.4, 121.4, rel_tol=1e-2)
+
+import numpy
+
+def test_numpy_equality():
+    x = numpy.array([1, 1])
+    y = numpy.array([2, 2])
+    z = numpy.array([3, 3])
+    assert x + y == z
+
+
+from py.test import raises
+
+class SomeException(Exception):
+    pass
+
+
+do_something = do_something_else = lambda : 1
+
+
+def test_raises():
+    with raises(SomeException):
+        do_something()
+        do_something_else()
+
+
+def test_raises2():
+    with raises(ValueError):
+        int('XYZ')
+
+
+def test_lower():
+    # Given
+    string = 'HeLlO wOrld'
+    expected = 'hello world'
+
+    # When
+    output = string.lower()
+
+    # Then
+    assert output == expected
+
+
+def test_lower_empty_string():
+    # Given
+    string = ''
+    expected = ''
+
+    # When
+    output = string.lower()
+
+    # Then
+    assert output == expected
+
+
+def test_lower1():
+    # Given
+    # Each test case is a tuple of (input, expected_result)
+    test_cases = [('HeLlO wOrld', 'hello world'),
+                  ('hi', 'hi'),
+                  ('123 ([?', '123 ([?'),
+                  ('', '')]
+
+    for string, expected in test_cases:
+        # When
+        output = string.lower()
+        # Then
+        assert output == expected