599 lines
21 KiB
ReStructuredText
599 lines
21 KiB
ReStructuredText
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.. _`tbreportdemo`:
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Demo of Python failure reports with pytest
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==================================================
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Here is a nice run of several tens of failures
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and how ``pytest`` presents things (unfortunately
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not showing the nice colors here in the HTML that you
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get on the terminal - we are working on that):
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.. code-block:: python
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assertion $ py.test failure_demo.py
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======= test session starts ========
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platform linux -- Python 3.4.3, pytest-2.8.2, py-1.4.30, pluggy-0.3.1
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rootdir: $REGENDOC_TMPDIR/assertion, inifile:
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collected 42 items
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failure_demo.py FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
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======= FAILURES ========
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_______ test_generative[0] ________
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param1 = 3, param2 = 6
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def test_generative(param1, param2):
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> assert param1 * 2 < param2
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E assert (3 * 2) < 6
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failure_demo.py:15: AssertionError
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_______ TestFailing.test_simple ________
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self = <failure_demo.TestFailing object at 0xdeadbeef>
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def test_simple(self):
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def f():
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return 42
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def g():
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return 43
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> assert f() == g()
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E assert 42 == 43
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E + where 42 = <function TestFailing.test_simple.<locals>.f at 0xdeadbeef>()
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E + and 43 = <function TestFailing.test_simple.<locals>.g at 0xdeadbeef>()
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failure_demo.py:28: AssertionError
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_______ TestFailing.test_simple_multiline ________
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self = <failure_demo.TestFailing object at 0xdeadbeef>
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def test_simple_multiline(self):
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otherfunc_multi(
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42,
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> 6*9)
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failure_demo.py:33:
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_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
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a = 42, b = 54
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def otherfunc_multi(a,b):
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> assert (a ==
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b)
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E assert 42 == 54
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failure_demo.py:11: AssertionError
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_______ TestFailing.test_not ________
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self = <failure_demo.TestFailing object at 0xdeadbeef>
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def test_not(self):
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def f():
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return 42
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> assert not f()
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E assert not 42
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E + where 42 = <function TestFailing.test_not.<locals>.f at 0xdeadbeef>()
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failure_demo.py:38: AssertionError
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_______ TestSpecialisedExplanations.test_eq_text ________
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self = <failure_demo.TestSpecialisedExplanations object at 0xdeadbeef>
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def test_eq_text(self):
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> assert 'spam' == 'eggs'
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E assert 'spam' == 'eggs'
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E - spam
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E + eggs
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failure_demo.py:42: AssertionError
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_______ TestSpecialisedExplanations.test_eq_similar_text ________
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self = <failure_demo.TestSpecialisedExplanations object at 0xdeadbeef>
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def test_eq_similar_text(self):
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> assert 'foo 1 bar' == 'foo 2 bar'
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E assert 'foo 1 bar' == 'foo 2 bar'
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E - foo 1 bar
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E ? ^
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E + foo 2 bar
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E ? ^
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failure_demo.py:45: AssertionError
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_______ TestSpecialisedExplanations.test_eq_multiline_text ________
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self = <failure_demo.TestSpecialisedExplanations object at 0xdeadbeef>
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def test_eq_multiline_text(self):
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> assert 'foo\nspam\nbar' == 'foo\neggs\nbar'
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E assert 'foo\nspam\nbar' == 'foo\neggs\nbar'
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E foo
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E - spam
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E + eggs
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E bar
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failure_demo.py:48: AssertionError
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_______ TestSpecialisedExplanations.test_eq_long_text ________
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self = <failure_demo.TestSpecialisedExplanations object at 0xdeadbeef>
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def test_eq_long_text(self):
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a = '1'*100 + 'a' + '2'*100
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b = '1'*100 + 'b' + '2'*100
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> assert a == b
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E assert '111111111111...2222222222222' == '1111111111111...2222222222222'
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E Skipping 90 identical leading characters in diff, use -v to show
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E Skipping 91 identical trailing characters in diff, use -v to show
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E - 1111111111a222222222
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E ? ^
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E + 1111111111b222222222
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E ? ^
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failure_demo.py:53: AssertionError
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_______ TestSpecialisedExplanations.test_eq_long_text_multiline ________
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self = <failure_demo.TestSpecialisedExplanations object at 0xdeadbeef>
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def test_eq_long_text_multiline(self):
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a = '1\n'*100 + 'a' + '2\n'*100
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b = '1\n'*100 + 'b' + '2\n'*100
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> assert a == b
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E assert '1\n1\n1\n1\n...n2\n2\n2\n2\n' == '1\n1\n1\n1\n1...n2\n2\n2\n2\n'
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E Skipping 190 identical leading characters in diff, use -v to show
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E Skipping 191 identical trailing characters in diff, use -v to show
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E 1
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E 1
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E 1
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E 1
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E 1
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E - a2
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E + b2
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E 2
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E 2
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E 2
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E 2
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failure_demo.py:58: AssertionError
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_______ TestSpecialisedExplanations.test_eq_list ________
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self = <failure_demo.TestSpecialisedExplanations object at 0xdeadbeef>
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def test_eq_list(self):
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> assert [0, 1, 2] == [0, 1, 3]
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E assert [0, 1, 2] == [0, 1, 3]
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E At index 2 diff: 2 != 3
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E Use -v to get the full diff
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failure_demo.py:61: AssertionError
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_______ TestSpecialisedExplanations.test_eq_list_long ________
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self = <failure_demo.TestSpecialisedExplanations object at 0xdeadbeef>
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def test_eq_list_long(self):
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a = [0]*100 + [1] + [3]*100
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b = [0]*100 + [2] + [3]*100
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> assert a == b
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E assert [0, 0, 0, 0, 0, 0, ...] == [0, 0, 0, 0, 0, 0, ...]
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E At index 100 diff: 1 != 2
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E Use -v to get the full diff
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failure_demo.py:66: AssertionError
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_______ TestSpecialisedExplanations.test_eq_dict ________
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self = <failure_demo.TestSpecialisedExplanations object at 0xdeadbeef>
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def test_eq_dict(self):
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> assert {'a': 0, 'b': 1, 'c': 0} == {'a': 0, 'b': 2, 'd': 0}
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E assert {'a': 0, 'b': 1, 'c': 0} == {'a': 0, 'b': 2, 'd': 0}
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E Omitting 1 identical items, use -v to show
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E Differing items:
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E {'b': 1} != {'b': 2}
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E Left contains more items:
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E {'c': 0}
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E Right contains more items:
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E {'d': 0}
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E Use -v to get the full diff
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failure_demo.py:69: AssertionError
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_______ TestSpecialisedExplanations.test_eq_set ________
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self = <failure_demo.TestSpecialisedExplanations object at 0xdeadbeef>
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def test_eq_set(self):
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> assert set([0, 10, 11, 12]) == set([0, 20, 21])
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E assert set([0, 10, 11, 12]) == set([0, 20, 21])
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E Extra items in the left set:
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E 10
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E 11
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E 12
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E Extra items in the right set:
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E 20
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E 21
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E Use -v to get the full diff
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failure_demo.py:72: AssertionError
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_______ TestSpecialisedExplanations.test_eq_longer_list ________
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self = <failure_demo.TestSpecialisedExplanations object at 0xdeadbeef>
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def test_eq_longer_list(self):
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> assert [1,2] == [1,2,3]
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E assert [1, 2] == [1, 2, 3]
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E Right contains more items, first extra item: 3
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E Use -v to get the full diff
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failure_demo.py:75: AssertionError
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_______ TestSpecialisedExplanations.test_in_list ________
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self = <failure_demo.TestSpecialisedExplanations object at 0xdeadbeef>
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def test_in_list(self):
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> assert 1 in [0, 2, 3, 4, 5]
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E assert 1 in [0, 2, 3, 4, 5]
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failure_demo.py:78: AssertionError
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_______ TestSpecialisedExplanations.test_not_in_text_multiline ________
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self = <failure_demo.TestSpecialisedExplanations object at 0xdeadbeef>
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def test_not_in_text_multiline(self):
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text = 'some multiline\ntext\nwhich\nincludes foo\nand a\ntail'
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> assert 'foo' not in text
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E assert 'foo' not in 'some multiline\ntext\nw...ncludes foo\nand a\ntail'
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E 'foo' is contained here:
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E some multiline
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E text
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E which
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E includes foo
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E ? +++
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E and a
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E tail
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failure_demo.py:82: AssertionError
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_______ TestSpecialisedExplanations.test_not_in_text_single ________
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self = <failure_demo.TestSpecialisedExplanations object at 0xdeadbeef>
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def test_not_in_text_single(self):
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text = 'single foo line'
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> assert 'foo' not in text
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E assert 'foo' not in 'single foo line'
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E 'foo' is contained here:
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E single foo line
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E ? +++
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failure_demo.py:86: AssertionError
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_______ TestSpecialisedExplanations.test_not_in_text_single_long ________
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self = <failure_demo.TestSpecialisedExplanations object at 0xdeadbeef>
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def test_not_in_text_single_long(self):
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text = 'head ' * 50 + 'foo ' + 'tail ' * 20
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> assert 'foo' not in text
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E assert 'foo' not in 'head head head head hea...ail tail tail tail tail '
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E 'foo' is contained here:
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E head head foo tail tail tail tail tail tail tail tail tail tail tail tail tail tail tail tail tail tail tail tail
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E ? +++
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failure_demo.py:90: AssertionError
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______ TestSpecialisedExplanations.test_not_in_text_single_long_term _______
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self = <failure_demo.TestSpecialisedExplanations object at 0xdeadbeef>
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def test_not_in_text_single_long_term(self):
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text = 'head ' * 50 + 'f'*70 + 'tail ' * 20
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> assert 'f'*70 not in text
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E assert 'fffffffffff...ffffffffffff' not in 'head head he...l tail tail '
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E 'ffffffffffffffffff...fffffffffffffffffff' is contained here:
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E head head fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffftail tail tail tail tail tail tail tail tail tail tail tail tail tail tail tail tail tail tail tail
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E ? ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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failure_demo.py:94: AssertionError
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_______ test_attribute ________
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def test_attribute():
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class Foo(object):
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b = 1
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i = Foo()
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> assert i.b == 2
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E assert 1 == 2
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E + where 1 = <failure_demo.test_attribute.<locals>.Foo object at 0xdeadbeef>.b
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failure_demo.py:101: AssertionError
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_______ test_attribute_instance ________
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def test_attribute_instance():
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class Foo(object):
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b = 1
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> assert Foo().b == 2
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E assert 1 == 2
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E + where 1 = <failure_demo.test_attribute_instance.<locals>.Foo object at 0xdeadbeef>.b
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E + where <failure_demo.test_attribute_instance.<locals>.Foo object at 0xdeadbeef> = <class 'failure_demo.test_attribute_instance.<locals>.Foo'>()
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failure_demo.py:107: AssertionError
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_______ test_attribute_failure ________
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def test_attribute_failure():
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class Foo(object):
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def _get_b(self):
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raise Exception('Failed to get attrib')
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b = property(_get_b)
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i = Foo()
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> assert i.b == 2
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failure_demo.py:116:
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_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
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self = <failure_demo.test_attribute_failure.<locals>.Foo object at 0xdeadbeef>
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def _get_b(self):
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> raise Exception('Failed to get attrib')
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E Exception: Failed to get attrib
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failure_demo.py:113: Exception
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_______ test_attribute_multiple ________
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def test_attribute_multiple():
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class Foo(object):
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b = 1
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class Bar(object):
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b = 2
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> assert Foo().b == Bar().b
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E assert 1 == 2
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E + where 1 = <failure_demo.test_attribute_multiple.<locals>.Foo object at 0xdeadbeef>.b
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E + where <failure_demo.test_attribute_multiple.<locals>.Foo object at 0xdeadbeef> = <class 'failure_demo.test_attribute_multiple.<locals>.Foo'>()
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E + and 2 = <failure_demo.test_attribute_multiple.<locals>.Bar object at 0xdeadbeef>.b
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E + where <failure_demo.test_attribute_multiple.<locals>.Bar object at 0xdeadbeef> = <class 'failure_demo.test_attribute_multiple.<locals>.Bar'>()
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failure_demo.py:124: AssertionError
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_______ TestRaises.test_raises ________
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self = <failure_demo.TestRaises object at 0xdeadbeef>
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def test_raises(self):
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s = 'qwe'
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> raises(TypeError, "int(s)")
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failure_demo.py:133:
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_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
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> int(s)
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E ValueError: invalid literal for int() with base 10: 'qwe'
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<0-codegen $PYTHON_PREFIX/lib/python3.4/site-packages/_pytest/python.py:1247>:1: ValueError
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_______ TestRaises.test_raises_doesnt ________
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self = <failure_demo.TestRaises object at 0xdeadbeef>
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def test_raises_doesnt(self):
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> raises(IOError, "int('3')")
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E Failed: DID NOT RAISE
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failure_demo.py:136: Failed
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_______ TestRaises.test_raise ________
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self = <failure_demo.TestRaises object at 0xdeadbeef>
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def test_raise(self):
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> raise ValueError("demo error")
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E ValueError: demo error
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failure_demo.py:139: ValueError
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_______ TestRaises.test_tupleerror ________
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self = <failure_demo.TestRaises object at 0xdeadbeef>
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def test_tupleerror(self):
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> a,b = [1]
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E ValueError: need more than 1 value to unpack
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failure_demo.py:142: ValueError
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______ TestRaises.test_reinterpret_fails_with_print_for_the_fun_of_it ______
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self = <failure_demo.TestRaises object at 0xdeadbeef>
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def test_reinterpret_fails_with_print_for_the_fun_of_it(self):
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l = [1,2,3]
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print ("l is %r" % l)
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> a,b = l.pop()
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E TypeError: 'int' object is not iterable
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failure_demo.py:147: TypeError
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--------------------------- Captured stdout call ---------------------------
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l is [1, 2, 3]
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_______ TestRaises.test_some_error ________
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self = <failure_demo.TestRaises object at 0xdeadbeef>
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def test_some_error(self):
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> if namenotexi:
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E NameError: name 'namenotexi' is not defined
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failure_demo.py:150: NameError
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_______ test_dynamic_compile_shows_nicely ________
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def test_dynamic_compile_shows_nicely():
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src = 'def foo():\n assert 1 == 0\n'
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name = 'abc-123'
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module = py.std.imp.new_module(name)
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code = py.code.compile(src, name, 'exec')
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py.builtin.exec_(code, module.__dict__)
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py.std.sys.modules[name] = module
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> module.foo()
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failure_demo.py:165:
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_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
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def foo():
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> assert 1 == 0
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E assert 1 == 0
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<2-codegen 'abc-123' $REGENDOC_TMPDIR/assertion/failure_demo.py:162>:2: AssertionError
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_______ TestMoreErrors.test_complex_error ________
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self = <failure_demo.TestMoreErrors object at 0xdeadbeef>
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def test_complex_error(self):
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def f():
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return 44
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def g():
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return 43
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> somefunc(f(), g())
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failure_demo.py:175:
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_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
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failure_demo.py:8: in somefunc
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otherfunc(x,y)
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_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
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a = 44, b = 43
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def otherfunc(a,b):
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> assert a==b
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E assert 44 == 43
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failure_demo.py:5: AssertionError
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_______ TestMoreErrors.test_z1_unpack_error ________
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self = <failure_demo.TestMoreErrors object at 0xdeadbeef>
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def test_z1_unpack_error(self):
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l = []
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> a,b = l
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E ValueError: need more than 0 values to unpack
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failure_demo.py:179: ValueError
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_______ TestMoreErrors.test_z2_type_error ________
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self = <failure_demo.TestMoreErrors object at 0xdeadbeef>
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def test_z2_type_error(self):
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l = 3
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> a,b = l
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E TypeError: 'int' object is not iterable
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failure_demo.py:183: TypeError
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_______ TestMoreErrors.test_startswith ________
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self = <failure_demo.TestMoreErrors object at 0xdeadbeef>
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def test_startswith(self):
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s = "123"
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g = "456"
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> assert s.startswith(g)
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E assert <built-in method startswith of str object at 0xdeadbeef>('456')
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E + where <built-in method startswith of str object at 0xdeadbeef> = '123'.startswith
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failure_demo.py:188: AssertionError
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_______ TestMoreErrors.test_startswith_nested ________
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|
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self = <failure_demo.TestMoreErrors object at 0xdeadbeef>
|
|
|
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def test_startswith_nested(self):
|
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def f():
|
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return "123"
|
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def g():
|
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return "456"
|
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> assert f().startswith(g())
|
|
E assert <built-in method startswith of str object at 0xdeadbeef>('456')
|
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E + where <built-in method startswith of str object at 0xdeadbeef> = '123'.startswith
|
|
E + where '123' = <function TestMoreErrors.test_startswith_nested.<locals>.f at 0xdeadbeef>()
|
|
E + and '456' = <function TestMoreErrors.test_startswith_nested.<locals>.g at 0xdeadbeef>()
|
|
|
|
failure_demo.py:195: AssertionError
|
|
_______ TestMoreErrors.test_global_func ________
|
|
|
|
self = <failure_demo.TestMoreErrors object at 0xdeadbeef>
|
|
|
|
def test_global_func(self):
|
|
> assert isinstance(globf(42), float)
|
|
E assert isinstance(43, float)
|
|
E + where 43 = globf(42)
|
|
|
|
failure_demo.py:198: AssertionError
|
|
_______ TestMoreErrors.test_instance ________
|
|
|
|
self = <failure_demo.TestMoreErrors object at 0xdeadbeef>
|
|
|
|
def test_instance(self):
|
|
self.x = 6*7
|
|
> assert self.x != 42
|
|
E assert 42 != 42
|
|
E + where 42 = <failure_demo.TestMoreErrors object at 0xdeadbeef>.x
|
|
|
|
failure_demo.py:202: AssertionError
|
|
_______ TestMoreErrors.test_compare ________
|
|
|
|
self = <failure_demo.TestMoreErrors object at 0xdeadbeef>
|
|
|
|
def test_compare(self):
|
|
> assert globf(10) < 5
|
|
E assert 11 < 5
|
|
E + where 11 = globf(10)
|
|
|
|
failure_demo.py:205: AssertionError
|
|
_______ TestMoreErrors.test_try_finally ________
|
|
|
|
self = <failure_demo.TestMoreErrors object at 0xdeadbeef>
|
|
|
|
def test_try_finally(self):
|
|
x = 1
|
|
try:
|
|
> assert x == 0
|
|
E assert 1 == 0
|
|
|
|
failure_demo.py:210: AssertionError
|
|
_______ TestCustomAssertMsg.test_single_line ________
|
|
|
|
self = <failure_demo.TestCustomAssertMsg object at 0xdeadbeef>
|
|
|
|
def test_single_line(self):
|
|
class A:
|
|
a = 1
|
|
b = 2
|
|
> assert A.a == b, "A.a appears not to be b"
|
|
E AssertionError: A.a appears not to be b
|
|
E assert 1 == 2
|
|
E + where 1 = <class 'failure_demo.TestCustomAssertMsg.test_single_line.<locals>.A'>.a
|
|
|
|
failure_demo.py:221: AssertionError
|
|
_______ TestCustomAssertMsg.test_multiline ________
|
|
|
|
self = <failure_demo.TestCustomAssertMsg object at 0xdeadbeef>
|
|
|
|
def test_multiline(self):
|
|
class A:
|
|
a = 1
|
|
b = 2
|
|
> assert A.a == b, "A.a appears not to be b\n" \
|
|
"or does not appear to be b\none of those"
|
|
E AssertionError: A.a appears not to be b
|
|
E or does not appear to be b
|
|
E one of those
|
|
E assert 1 == 2
|
|
E + where 1 = <class 'failure_demo.TestCustomAssertMsg.test_multiline.<locals>.A'>.a
|
|
|
|
failure_demo.py:227: AssertionError
|
|
_______ TestCustomAssertMsg.test_custom_repr ________
|
|
|
|
self = <failure_demo.TestCustomAssertMsg object at 0xdeadbeef>
|
|
|
|
def test_custom_repr(self):
|
|
class JSON:
|
|
a = 1
|
|
def __repr__(self):
|
|
return "This is JSON\n{\n 'foo': 'bar'\n}"
|
|
a = JSON()
|
|
b = 2
|
|
> assert a.a == b, a
|
|
E AssertionError: This is JSON
|
|
E {
|
|
E 'foo': 'bar'
|
|
E }
|
|
E assert 1 == 2
|
|
E + where 1 = This is JSON\n{\n 'foo': 'bar'\n}.a
|
|
|
|
failure_demo.py:237: AssertionError
|
|
======= 42 failed in 0.12 seconds ========
|