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|
.. _`tbreportdemo`:
Demo of Python failure reports with pytest
==================================================
Here is a nice run of several tens of failures
and how ``pytest`` presents things (unfortunately
not showing the nice colors here in the HTML that you
get on the terminal - we are working on that):
.. code-block:: python
assertion $ py.test failure_demo.py
======= test session starts ========
platform linux -- Python 3.4.0, pytest-2.9.1, py-1.4.31, pluggy-0.3.1
rootdir: $REGENDOC_TMPDIR/assertion, inifile:
collected 42 items
failure_demo.py FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
======= FAILURES ========
_______ test_generative[0] ________
param1 = 3, param2 = 6
def test_generative(param1, param2):
> assert param1 * 2 < param2
E assert (3 * 2) < 6
failure_demo.py:16: AssertionError
_______ TestFailing.test_simple ________
self = <failure_demo.TestFailing object at 0xdeadbeef>
def test_simple(self):
def f():
return 42
def g():
return 43
> assert f() == g()
E assert 42 == 43
E + where 42 = <function TestFailing.test_simple.<locals>.f at 0xdeadbeef>()
E + and 43 = <function TestFailing.test_simple.<locals>.g at 0xdeadbeef>()
failure_demo.py:29: AssertionError
_______ TestFailing.test_simple_multiline ________
self = <failure_demo.TestFailing object at 0xdeadbeef>
def test_simple_multiline(self):
otherfunc_multi(
42,
> 6*9)
failure_demo.py:34:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
a = 42, b = 54
def otherfunc_multi(a,b):
> assert (a ==
b)
E assert 42 == 54
failure_demo.py:12: AssertionError
_______ TestFailing.test_not ________
self = <failure_demo.TestFailing object at 0xdeadbeef>
def test_not(self):
def f():
return 42
> assert not f()
E assert not 42
E + where 42 = <function TestFailing.test_not.<locals>.f at 0xdeadbeef>()
failure_demo.py:39: AssertionError
_______ TestSpecialisedExplanations.test_eq_text ________
self = <failure_demo.TestSpecialisedExplanations object at 0xdeadbeef>
def test_eq_text(self):
> assert 'spam' == 'eggs'
E assert 'spam' == 'eggs'
E - spam
E + eggs
failure_demo.py:43: AssertionError
_______ TestSpecialisedExplanations.test_eq_similar_text ________
self = <failure_demo.TestSpecialisedExplanations object at 0xdeadbeef>
def test_eq_similar_text(self):
> assert 'foo 1 bar' == 'foo 2 bar'
E assert 'foo 1 bar' == 'foo 2 bar'
E - foo 1 bar
E ? ^
E + foo 2 bar
E ? ^
failure_demo.py:46: AssertionError
_______ TestSpecialisedExplanations.test_eq_multiline_text ________
self = <failure_demo.TestSpecialisedExplanations object at 0xdeadbeef>
def test_eq_multiline_text(self):
> assert 'foo\nspam\nbar' == 'foo\neggs\nbar'
E assert 'foo\nspam\nbar' == 'foo\neggs\nbar'
E foo
E - spam
E + eggs
E bar
failure_demo.py:49: AssertionError
_______ TestSpecialisedExplanations.test_eq_long_text ________
self = <failure_demo.TestSpecialisedExplanations object at 0xdeadbeef>
def test_eq_long_text(self):
a = '1'*100 + 'a' + '2'*100
b = '1'*100 + 'b' + '2'*100
> assert a == b
E assert '111111111111...2222222222222' == '1111111111111...2222222222222'
E Skipping 90 identical leading characters in diff, use -v to show
E Skipping 91 identical trailing characters in diff, use -v to show
E - 1111111111a222222222
E ? ^
E + 1111111111b222222222
E ? ^
failure_demo.py:54: AssertionError
_______ TestSpecialisedExplanations.test_eq_long_text_multiline ________
self = <failure_demo.TestSpecialisedExplanations object at 0xdeadbeef>
def test_eq_long_text_multiline(self):
a = '1\n'*100 + 'a' + '2\n'*100
b = '1\n'*100 + 'b' + '2\n'*100
> assert a == b
E assert '1\n1\n1\n1\n...n2\n2\n2\n2\n' == '1\n1\n1\n1\n1...n2\n2\n2\n2\n'
E Skipping 190 identical leading characters in diff, use -v to show
E Skipping 191 identical trailing characters in diff, use -v to show
E 1
E 1
E 1
E 1
E 1
E - a2
E + b2
E 2
E 2
E 2
E 2
failure_demo.py:59: AssertionError
_______ TestSpecialisedExplanations.test_eq_list ________
self = <failure_demo.TestSpecialisedExplanations object at 0xdeadbeef>
def test_eq_list(self):
> assert [0, 1, 2] == [0, 1, 3]
E assert [0, 1, 2] == [0, 1, 3]
E At index 2 diff: 2 != 3
E Use -v to get the full diff
failure_demo.py:62: AssertionError
_______ TestSpecialisedExplanations.test_eq_list_long ________
self = <failure_demo.TestSpecialisedExplanations object at 0xdeadbeef>
def test_eq_list_long(self):
a = [0]*100 + [1] + [3]*100
b = [0]*100 + [2] + [3]*100
> assert a == b
E assert [0, 0, 0, 0, 0, 0, ...] == [0, 0, 0, 0, 0, 0, ...]
E At index 100 diff: 1 != 2
E Use -v to get the full diff
failure_demo.py:67: AssertionError
_______ TestSpecialisedExplanations.test_eq_dict ________
self = <failure_demo.TestSpecialisedExplanations object at 0xdeadbeef>
def test_eq_dict(self):
> assert {'a': 0, 'b': 1, 'c': 0} == {'a': 0, 'b': 2, 'd': 0}
E assert {'a': 0, 'b': 1, 'c': 0} == {'a': 0, 'b': 2, 'd': 0}
E Omitting 1 identical items, use -v to show
E Differing items:
E {'b': 1} != {'b': 2}
E Left contains more items:
E {'c': 0}
E Right contains more items:
E {'d': 0}
E Use -v to get the full diff
failure_demo.py:70: AssertionError
_______ TestSpecialisedExplanations.test_eq_set ________
self = <failure_demo.TestSpecialisedExplanations object at 0xdeadbeef>
def test_eq_set(self):
> assert set([0, 10, 11, 12]) == set([0, 20, 21])
E assert set([0, 10, 11, 12]) == set([0, 20, 21])
E Extra items in the left set:
E 10
E 11
E 12
E Extra items in the right set:
E 20
E 21
E Use -v to get the full diff
failure_demo.py:73: AssertionError
_______ TestSpecialisedExplanations.test_eq_longer_list ________
self = <failure_demo.TestSpecialisedExplanations object at 0xdeadbeef>
def test_eq_longer_list(self):
> assert [1,2] == [1,2,3]
E assert [1, 2] == [1, 2, 3]
E Right contains more items, first extra item: 3
E Use -v to get the full diff
failure_demo.py:76: AssertionError
_______ TestSpecialisedExplanations.test_in_list ________
self = <failure_demo.TestSpecialisedExplanations object at 0xdeadbeef>
def test_in_list(self):
> assert 1 in [0, 2, 3, 4, 5]
E assert 1 in [0, 2, 3, 4, 5]
failure_demo.py:79: AssertionError
_______ TestSpecialisedExplanations.test_not_in_text_multiline ________
self = <failure_demo.TestSpecialisedExplanations object at 0xdeadbeef>
def test_not_in_text_multiline(self):
text = 'some multiline\ntext\nwhich\nincludes foo\nand a\ntail'
> assert 'foo' not in text
E assert 'foo' not in 'some multiline\ntext\nw...ncludes foo\nand a\ntail'
E 'foo' is contained here:
E some multiline
E text
E which
E includes foo
E ? +++
E and a
E tail
failure_demo.py:83: AssertionError
_______ TestSpecialisedExplanations.test_not_in_text_single ________
self = <failure_demo.TestSpecialisedExplanations object at 0xdeadbeef>
def test_not_in_text_single(self):
text = 'single foo line'
> assert 'foo' not in text
E assert 'foo' not in 'single foo line'
E 'foo' is contained here:
E single foo line
E ? +++
failure_demo.py:87: AssertionError
_______ TestSpecialisedExplanations.test_not_in_text_single_long ________
self = <failure_demo.TestSpecialisedExplanations object at 0xdeadbeef>
def test_not_in_text_single_long(self):
text = 'head ' * 50 + 'foo ' + 'tail ' * 20
> assert 'foo' not in text
E assert 'foo' not in 'head head head head hea...ail tail tail tail tail '
E 'foo' is contained here:
E head head foo tail tail tail tail tail tail tail tail tail tail tail tail tail tail tail tail tail tail tail tail
E ? +++
failure_demo.py:91: AssertionError
______ TestSpecialisedExplanations.test_not_in_text_single_long_term _______
self = <failure_demo.TestSpecialisedExplanations object at 0xdeadbeef>
def test_not_in_text_single_long_term(self):
text = 'head ' * 50 + 'f'*70 + 'tail ' * 20
> assert 'f'*70 not in text
E assert 'fffffffffff...ffffffffffff' not in 'head head he...l tail tail '
E 'ffffffffffffffffff...fffffffffffffffffff' is contained here:
E head head fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffftail tail tail tail tail tail tail tail tail tail tail tail tail tail tail tail tail tail tail tail
E ? ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
failure_demo.py:95: AssertionError
_______ test_attribute ________
def test_attribute():
class Foo(object):
b = 1
i = Foo()
> assert i.b == 2
E assert 1 == 2
E + where 1 = <failure_demo.test_attribute.<locals>.Foo object at 0xdeadbeef>.b
failure_demo.py:102: AssertionError
_______ test_attribute_instance ________
def test_attribute_instance():
class Foo(object):
b = 1
> assert Foo().b == 2
E assert 1 == 2
E + where 1 = <failure_demo.test_attribute_instance.<locals>.Foo object at 0xdeadbeef>.b
E + where <failure_demo.test_attribute_instance.<locals>.Foo object at 0xdeadbeef> = <class 'failure_demo.test_attribute_instance.<locals>.Foo'>()
failure_demo.py:108: AssertionError
_______ test_attribute_failure ________
def test_attribute_failure():
class Foo(object):
def _get_b(self):
raise Exception('Failed to get attrib')
b = property(_get_b)
i = Foo()
> assert i.b == 2
failure_demo.py:117:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
self = <failure_demo.test_attribute_failure.<locals>.Foo object at 0xdeadbeef>
def _get_b(self):
> raise Exception('Failed to get attrib')
E Exception: Failed to get attrib
failure_demo.py:114: Exception
_______ test_attribute_multiple ________
def test_attribute_multiple():
class Foo(object):
b = 1
class Bar(object):
b = 2
> assert Foo().b == Bar().b
E assert 1 == 2
E + where 1 = <failure_demo.test_attribute_multiple.<locals>.Foo object at 0xdeadbeef>.b
E + where <failure_demo.test_attribute_multiple.<locals>.Foo object at 0xdeadbeef> = <class 'failure_demo.test_attribute_multiple.<locals>.Foo'>()
E + and 2 = <failure_demo.test_attribute_multiple.<locals>.Bar object at 0xdeadbeef>.b
E + where <failure_demo.test_attribute_multiple.<locals>.Bar object at 0xdeadbeef> = <class 'failure_demo.test_attribute_multiple.<locals>.Bar'>()
failure_demo.py:125: AssertionError
_______ TestRaises.test_raises ________
self = <failure_demo.TestRaises object at 0xdeadbeef>
def test_raises(self):
s = 'qwe'
> raises(TypeError, "int(s)")
failure_demo.py:134:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
> int(s)
E ValueError: invalid literal for int() with base 10: 'qwe'
<0-codegen $PYTHON_PREFIX/lib/python3.4/site-packages/_pytest/python.py:1302>:1: ValueError
_______ TestRaises.test_raises_doesnt ________
self = <failure_demo.TestRaises object at 0xdeadbeef>
def test_raises_doesnt(self):
> raises(IOError, "int('3')")
E Failed: DID NOT RAISE <class 'OSError'>
failure_demo.py:137: Failed
_______ TestRaises.test_raise ________
self = <failure_demo.TestRaises object at 0xdeadbeef>
def test_raise(self):
> raise ValueError("demo error")
E ValueError: demo error
failure_demo.py:140: ValueError
_______ TestRaises.test_tupleerror ________
self = <failure_demo.TestRaises object at 0xdeadbeef>
def test_tupleerror(self):
> a,b = [1]
E ValueError: need more than 1 value to unpack
failure_demo.py:143: ValueError
______ TestRaises.test_reinterpret_fails_with_print_for_the_fun_of_it ______
self = <failure_demo.TestRaises object at 0xdeadbeef>
def test_reinterpret_fails_with_print_for_the_fun_of_it(self):
l = [1,2,3]
print ("l is %r" % l)
> a,b = l.pop()
E TypeError: 'int' object is not iterable
failure_demo.py:148: TypeError
--------------------------- Captured stdout call ---------------------------
l is [1, 2, 3]
_______ TestRaises.test_some_error ________
self = <failure_demo.TestRaises object at 0xdeadbeef>
def test_some_error(self):
> if namenotexi:
E NameError: name 'namenotexi' is not defined
failure_demo.py:151: NameError
_______ test_dynamic_compile_shows_nicely ________
def test_dynamic_compile_shows_nicely():
src = 'def foo():\n assert 1 == 0\n'
name = 'abc-123'
module = py.std.imp.new_module(name)
code = _pytest._code.compile(src, name, 'exec')
py.builtin.exec_(code, module.__dict__)
py.std.sys.modules[name] = module
> module.foo()
failure_demo.py:166:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
def foo():
> assert 1 == 0
E assert 1 == 0
<2-codegen 'abc-123' $REGENDOC_TMPDIR/assertion/failure_demo.py:163>:2: AssertionError
_______ TestMoreErrors.test_complex_error ________
self = <failure_demo.TestMoreErrors object at 0xdeadbeef>
def test_complex_error(self):
def f():
return 44
def g():
return 43
> somefunc(f(), g())
failure_demo.py:176:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
failure_demo.py:9: in somefunc
otherfunc(x,y)
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
a = 44, b = 43
def otherfunc(a,b):
> assert a==b
E assert 44 == 43
failure_demo.py:6: AssertionError
_______ TestMoreErrors.test_z1_unpack_error ________
self = <failure_demo.TestMoreErrors object at 0xdeadbeef>
def test_z1_unpack_error(self):
l = []
> a,b = l
E ValueError: need more than 0 values to unpack
failure_demo.py:180: ValueError
_______ TestMoreErrors.test_z2_type_error ________
self = <failure_demo.TestMoreErrors object at 0xdeadbeef>
def test_z2_type_error(self):
l = 3
> a,b = l
E TypeError: 'int' object is not iterable
failure_demo.py:184: TypeError
_______ TestMoreErrors.test_startswith ________
self = <failure_demo.TestMoreErrors object at 0xdeadbeef>
def test_startswith(self):
s = "123"
g = "456"
> assert s.startswith(g)
E assert <built-in method startswith of str object at 0xdeadbeef>('456')
E + where <built-in method startswith of str object at 0xdeadbeef> = '123'.startswith
failure_demo.py:189: AssertionError
_______ TestMoreErrors.test_startswith_nested ________
self = <failure_demo.TestMoreErrors object at 0xdeadbeef>
def test_startswith_nested(self):
def f():
return "123"
def g():
return "456"
> assert f().startswith(g())
E assert <built-in method startswith of str object at 0xdeadbeef>('456')
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:196: 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:199: 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:203: 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:206: 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:211: 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:222: 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:228: 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:238: AssertionError
======= 42 failed in 0.12 seconds ========
|