Adding chapter 5 source code

Chapter5/mypytest/tests/__init__.py

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+#empty file

Chapter5/mypytest/tests/test_myadd3.py

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+# test_myadd3.py test suite for myadd function
+
+import pytest
+from mypytest.src.myadd3 import add
+
+
+def test_add1():
+    """ test case to validate two positive numbers"""
+    assert add(10, 5) == 15
+
+
+def test_add2():
+    """ test case to validate two positive numbers"""
+    assert add(10, -5) == 5, "should be 5"
+
+def test_add3():
+    """ test case to validate two positive numbers"""
+    assert add(-10, 5) == -5
+
+def test_add4():
+    """ test case to validate two positive numbers"""
+    assert add(-10, -5) == -15
+
+def ttest_typeerror1():
+    """ test case to check if we can handle non number input"""
+    with pytest.raises(TypeError):
+        add('a', 5)
+
+def ttest_typeerror2():
+    """ test case to check if we can handle non number input"""
+    with pytest.raises(TypeError, match="only numbers are allowed"):
+        add('a', 'b')

Chapter5/mypytest/tests/test_myadd4.py

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+# test_myadd4.py test suite for myadd function using markers
+import sys
+
+import pytest
+from mypytest.src.myadd3 import add
+
+@pytest.mark.skip
+def test_add1():
+    """ test case to validate two positive numbers"""
+    assert add(10, 5) == 15
+
+@pytest.mark.skipif(sys.version_info > (3,6),
+                    reason=" skipped for release > than Python 3.6")
+def test_add2():
+    """ test case to validate two positive numbers"""
+    assert add(10, -5) == 5, "should be 5"
+
+@pytest.mark.xfail(sys.platform == "darwin",
+                   reason="ignore exception for mac")
+def test_add3():
+    """ test case to validate two positive numbers"""
+    assert add(-10, 5) == -5
+    raise Exception()
+

Chapter5/mypytest/tests/test_myadd5.py

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+# test_myadd5.py test suite using parameterize marker
+import sys
+
+import pytest
+from mypytest.src.myadd3 import add
+
+@pytest.mark.parametrize("x,y,ans",
+                         [(10,5,15),(10,-5,5),
+                          (-10,5,-5),(-10,-5,-15)],
+                         ids=["pos-pos","pos-neg",
+                              "neg-pos", "neg-neg"])
+def test_add(x, y, ans):
+    """ test case to validate two positive numbers"""
+    assert add(x, y) == ans

Chapter5/mypytest/tests/test_mycalc1.py

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+# test_mycalc1.py test calc functions using test fixture
+import sys
+
+import pytest
+from mypytest.src.myadd3 import add
+from mypytest.src.mycalc import MyCalc
+
+@pytest.fixture(scope="module")
+def my_calc():
+    return MyCalc()
+
+@pytest.fixture
+def test_data():
+    return {'x':10, 'y':5}
+
+def test_add(my_calc, test_data):
+    """ test case to validate two positive numbers"""
+    assert my_calc.add(test_data.get('x'), test_data.get('y')) == 15
+
+def test_subtract(my_calc, test_data):
+    """ test case to validate two positive numbers"""
+    assert my_calc.subtract(test_data.get('x'), test_data.get('y')) == 5
+

Chapter5/mypytest/tests/test_mycalc2.py

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+# test_mycalc2.py test calc functions using test fixture
+
+import pytest
+from mypytest.src.myadd3 import add
+from mypytest.src.mycalc import MyCalc
+
+@pytest.fixture(scope="module")
+def my_calc():
+    my_calc = MyCalc()
+    yield my_calc
+    del my_calc
+
+@pytest.fixture
+def data_set(request):
+    dict = {'x':10, 'y':5}
+    def delete_dict():
+        del dict
+    request.addfinalizer(delete_dict)
+    return dict
+
+def test_add(my_calc, data_set):
+    """ test case to validate two positive numbers"""
+    assert my_calc.add(data_set.get('x'), data_set.get('y')) == 15
+
+def test_subtract(my_calc, data_set):
+    """ test case to validate two positive numbers"""
+    assert my_calc.subtract(data_set.get('x'), data_set.get('y')) == 5
+