572 lines
17 KiB
Python
572 lines
17 KiB
Python
# -*- coding: utf-8 -*-
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import sys
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import textwrap
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import py, pytest
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import _pytest.assertion as plugin
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from _pytest.assertion import reinterpret
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from _pytest.assertion import util
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needsnewassert = pytest.mark.skipif("sys.version_info < (2,6)")
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PY3 = sys.version_info >= (3, 0)
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@pytest.fixture
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def mock_config():
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class Config(object):
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verbose = False
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def getoption(self, name):
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if name == 'verbose':
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return self.verbose
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raise KeyError('Not mocked out: %s' % name)
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return Config()
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def interpret(expr):
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return reinterpret.reinterpret(expr, py.code.Frame(sys._getframe(1)))
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class TestBinReprIntegration:
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pytestmark = needsnewassert
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def test_pytest_assertrepr_compare_called(self, testdir):
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testdir.makeconftest("""
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l = []
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def pytest_assertrepr_compare(op, left, right):
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l.append((op, left, right))
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def pytest_funcarg__l(request):
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return l
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""")
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testdir.makepyfile("""
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def test_hello():
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assert 0 == 1
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def test_check(l):
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assert l == [("==", 0, 1)]
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""")
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result = testdir.runpytest("-v")
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result.stdout.fnmatch_lines([
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"*test_hello*FAIL*",
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"*test_check*PASS*",
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])
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def callequal(left, right, verbose=False):
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config = mock_config()
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config.verbose = verbose
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return plugin.pytest_assertrepr_compare(config, '==', left, right)
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class TestAssert_reprcompare:
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def test_different_types(self):
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assert callequal([0, 1], 'foo') is None
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def test_summary(self):
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summary = callequal([0, 1], [0, 2])[0]
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assert len(summary) < 65
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def test_text_diff(self):
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diff = callequal('spam', 'eggs')[1:]
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assert '- spam' in diff
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assert '+ eggs' in diff
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def test_text_skipping(self):
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lines = callequal('a'*50 + 'spam', 'a'*50 + 'eggs')
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assert 'Skipping' in lines[1]
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for line in lines:
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assert 'a'*50 not in line
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def test_text_skipping_verbose(self):
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lines = callequal('a'*50 + 'spam', 'a'*50 + 'eggs', verbose=True)
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assert '- ' + 'a'*50 + 'spam' in lines
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assert '+ ' + 'a'*50 + 'eggs' in lines
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def test_multiline_text_diff(self):
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left = 'foo\nspam\nbar'
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right = 'foo\neggs\nbar'
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diff = callequal(left, right)
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assert '- spam' in diff
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assert '+ eggs' in diff
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def test_list(self):
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expl = callequal([0, 1], [0, 2])
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assert len(expl) > 1
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@pytest.mark.parametrize(
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['left', 'right', 'expected'], [
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([0, 1], [0, 2], """
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Full diff:
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- [0, 1]
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? ^
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+ [0, 2]
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? ^
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"""),
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({0: 1}, {0: 2}, """
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Full diff:
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- {0: 1}
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? ^
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+ {0: 2}
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? ^
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"""),
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(set([0, 1]), set([0, 2]), """
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Full diff:
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- set([0, 1])
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? ^
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+ set([0, 2])
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? ^
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""" if not PY3 else """
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Full diff:
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- {0, 1}
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? ^
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+ {0, 2}
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? ^
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""")
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]
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)
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def test_iterable_full_diff(self, left, right, expected):
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"""Test the full diff assertion failure explanation.
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When verbose is False, then just a -v notice to get the diff is rendered,
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when verbose is True, then ndiff of the pprint is returned.
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"""
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expl = callequal(left, right, verbose=False)
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assert expl[-1] == 'Use -v to get the full diff'
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expl = '\n'.join(callequal(left, right, verbose=True))
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assert expl.endswith(textwrap.dedent(expected).strip())
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def test_list_different_lenghts(self):
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expl = callequal([0, 1], [0, 1, 2])
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assert len(expl) > 1
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expl = callequal([0, 1, 2], [0, 1])
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assert len(expl) > 1
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def test_dict(self):
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expl = callequal({'a': 0}, {'a': 1})
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assert len(expl) > 1
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def test_dict_omitting(self):
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lines = callequal({'a': 0, 'b': 1}, {'a': 1, 'b': 1})
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assert lines[1].startswith('Omitting 1 identical item')
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assert 'Common items' not in lines
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for line in lines[1:]:
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assert 'b' not in line
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def test_dict_omitting_verbose(self):
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lines = callequal({'a': 0, 'b': 1}, {'a': 1, 'b': 1}, verbose=True)
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assert lines[1].startswith('Common items:')
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assert 'Omitting' not in lines[1]
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assert lines[2] == "{'b': 1}"
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def test_set(self):
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expl = callequal(set([0, 1]), set([0, 2]))
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assert len(expl) > 1
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def test_frozenzet(self):
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expl = callequal(frozenset([0, 1]), set([0, 2]))
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assert len(expl) > 1
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def test_Sequence(self):
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col = py.builtin._tryimport(
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"collections.abc",
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"collections",
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"sys")
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if not hasattr(col, "MutableSequence"):
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pytest.skip("cannot import MutableSequence")
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MutableSequence = col.MutableSequence
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class TestSequence(MutableSequence): # works with a Sequence subclass
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def __init__(self, iterable):
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self.elements = list(iterable)
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def __getitem__(self, item):
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return self.elements[item]
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def __len__(self):
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return len(self.elements)
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def __setitem__(self, item, value):
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pass
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def __delitem__(self, item):
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pass
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def insert(self, item, index):
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pass
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expl = callequal(TestSequence([0, 1]), list([0, 2]))
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assert len(expl) > 1
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def test_list_tuples(self):
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expl = callequal([], [(1,2)])
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assert len(expl) > 1
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expl = callequal([(1,2)], [])
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assert len(expl) > 1
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def test_list_bad_repr(self):
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class A:
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def __repr__(self):
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raise ValueError(42)
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expl = callequal([], [A()])
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assert 'ValueError' in "".join(expl)
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expl = callequal({}, {'1': A()})
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assert 'faulty' in "".join(expl)
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def test_one_repr_empty(self):
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"""
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the faulty empty string repr did trigger
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a unbound local error in _diff_text
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"""
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class A(str):
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def __repr__(self):
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return ''
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expl = callequal(A(), '')
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assert not expl
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def test_repr_no_exc(self):
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expl = ' '.join(callequal('foo', 'bar'))
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assert 'raised in repr()' not in expl
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def test_unicode(self):
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left = py.builtin._totext('£€', 'utf-8')
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right = py.builtin._totext('£', 'utf-8')
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expl = callequal(left, right)
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assert expl[0] == py.builtin._totext("'£€' == '£'", 'utf-8')
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assert expl[1] == py.builtin._totext('- £€', 'utf-8')
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assert expl[2] == py.builtin._totext('+ £', 'utf-8')
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def test_mojibake(self):
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# issue 429
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left = 'e'
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right = '\xc3\xa9'
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if not isinstance(left, py.builtin.bytes):
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left = py.builtin.bytes(left, 'utf-8')
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right = py.builtin.bytes(right, 'utf-8')
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expl = callequal(left, right)
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for line in expl:
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assert isinstance(line, py.builtin.text)
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msg = py.builtin._totext('\n').join(expl)
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assert msg
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class TestFormatExplanation:
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def test_special_chars_full(self, testdir):
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# Issue 453, for the bug this would raise IndexError
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testdir.makepyfile("""
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def test_foo():
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assert '\\n}' == ''
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""")
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result = testdir.runpytest()
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assert result.ret == 1
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result.stdout.fnmatch_lines([
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"*AssertionError*",
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])
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def test_fmt_simple(self):
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expl = 'assert foo'
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assert util.format_explanation(expl) == 'assert foo'
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def test_fmt_where(self):
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expl = '\n'.join(['assert 1',
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'{1 = foo',
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'} == 2'])
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res = '\n'.join(['assert 1 == 2',
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' + where 1 = foo'])
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assert util.format_explanation(expl) == res
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def test_fmt_and(self):
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expl = '\n'.join(['assert 1',
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'{1 = foo',
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'} == 2',
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'{2 = bar',
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'}'])
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res = '\n'.join(['assert 1 == 2',
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' + where 1 = foo',
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' + and 2 = bar'])
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assert util.format_explanation(expl) == res
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def test_fmt_where_nested(self):
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expl = '\n'.join(['assert 1',
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'{1 = foo',
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'{foo = bar',
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'}',
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'} == 2'])
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res = '\n'.join(['assert 1 == 2',
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' + where 1 = foo',
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' + where foo = bar'])
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assert util.format_explanation(expl) == res
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def test_fmt_newline(self):
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expl = '\n'.join(['assert "foo" == "bar"',
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'~- foo',
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'~+ bar'])
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res = '\n'.join(['assert "foo" == "bar"',
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' - foo',
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' + bar'])
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assert util.format_explanation(expl) == res
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def test_fmt_newline_escaped(self):
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expl = '\n'.join(['assert foo == bar',
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'baz'])
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res = 'assert foo == bar\\nbaz'
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assert util.format_explanation(expl) == res
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def test_fmt_newline_before_where(self):
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expl = '\n'.join(['the assertion message here',
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'>assert 1',
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'{1 = foo',
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'} == 2',
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'{2 = bar',
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'}'])
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res = '\n'.join(['the assertion message here',
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'assert 1 == 2',
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' + where 1 = foo',
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' + and 2 = bar'])
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assert util.format_explanation(expl) == res
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def test_fmt_multi_newline_before_where(self):
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expl = '\n'.join(['the assertion',
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'~message here',
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'>assert 1',
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'{1 = foo',
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'} == 2',
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'{2 = bar',
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'}'])
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res = '\n'.join(['the assertion',
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' message here',
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'assert 1 == 2',
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' + where 1 = foo',
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' + and 2 = bar'])
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assert util.format_explanation(expl) == res
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def test_python25_compile_issue257(testdir):
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testdir.makepyfile("""
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def test_rewritten():
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assert 1 == 2
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# some comment
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""")
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result = testdir.runpytest()
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assert result.ret == 1
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result.stdout.fnmatch_lines("""
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*E*assert 1 == 2*
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*1 failed*
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""")
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@needsnewassert
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def test_rewritten(testdir):
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testdir.makepyfile("""
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def test_rewritten():
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assert "@py_builtins" in globals()
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""")
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assert testdir.runpytest().ret == 0
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def test_reprcompare_notin(mock_config):
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detail = plugin.pytest_assertrepr_compare(
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mock_config, 'not in', 'foo', 'aaafoobbb')[1:]
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assert detail == ["'foo' is contained here:", ' aaafoobbb', '? +++']
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@needsnewassert
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def test_pytest_assertrepr_compare_integration(testdir):
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testdir.makepyfile("""
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def test_hello():
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x = set(range(100))
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y = x.copy()
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y.remove(50)
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assert x == y
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""")
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result = testdir.runpytest()
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result.stdout.fnmatch_lines([
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"*def test_hello():*",
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"*assert x == y*",
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"*E*Extra items*left*",
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"*E*50*",
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])
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@needsnewassert
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def test_sequence_comparison_uses_repr(testdir):
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testdir.makepyfile("""
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def test_hello():
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x = set("hello x")
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y = set("hello y")
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assert x == y
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""")
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result = testdir.runpytest()
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result.stdout.fnmatch_lines([
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"*def test_hello():*",
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"*assert x == y*",
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"*E*Extra items*left*",
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"*E*'x'*",
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"*E*Extra items*right*",
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"*E*'y'*",
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])
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@pytest.mark.xfail("sys.version_info < (2,6)")
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def test_assert_compare_truncate_longmessage(testdir):
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testdir.makepyfile(r"""
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def test_long():
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a = list(range(200))
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b = a[::2]
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a = '\n'.join(map(str, a))
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b = '\n'.join(map(str, b))
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assert a == b
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""")
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result = testdir.runpytest()
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result.stdout.fnmatch_lines([
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"*truncated*use*-vv*",
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])
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result = testdir.runpytest('-vv')
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result.stdout.fnmatch_lines([
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"*- 197",
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])
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@needsnewassert
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def test_assertrepr_loaded_per_dir(testdir):
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testdir.makepyfile(test_base=['def test_base(): assert 1 == 2'])
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a = testdir.mkdir('a')
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a_test = a.join('test_a.py')
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a_test.write('def test_a(): assert 1 == 2')
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a_conftest = a.join('conftest.py')
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a_conftest.write('def pytest_assertrepr_compare(): return ["summary a"]')
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b = testdir.mkdir('b')
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b_test = b.join('test_b.py')
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b_test.write('def test_b(): assert 1 == 2')
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b_conftest = b.join('conftest.py')
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b_conftest.write('def pytest_assertrepr_compare(): return ["summary b"]')
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result = testdir.runpytest()
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result.stdout.fnmatch_lines([
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'*def test_base():*',
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'*E*assert 1 == 2*',
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'*def test_a():*',
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'*E*assert summary a*',
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'*def test_b():*',
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'*E*assert summary b*'])
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def test_assertion_options(testdir):
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testdir.makepyfile("""
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def test_hello():
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x = 3
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assert x == 4
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""")
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result = testdir.runpytest()
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assert "3 == 4" in result.stdout.str()
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off_options = (("--no-assert",),
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("--nomagic",),
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("--no-assert", "--nomagic"),
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("--assert=plain",),
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("--assert=plain", "--no-assert"),
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("--assert=plain", "--nomagic"),
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("--assert=plain", "--no-assert", "--nomagic"))
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for opt in off_options:
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result = testdir.runpytest(*opt)
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assert "3 == 4" not in result.stdout.str()
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def test_old_assert_mode(testdir):
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testdir.makepyfile("""
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def test_in_old_mode():
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assert "@py_builtins" not in globals()
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""")
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result = testdir.runpytest("--assert=reinterp")
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assert result.ret == 0
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def test_triple_quoted_string_issue113(testdir):
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testdir.makepyfile("""
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def test_hello():
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assert "" == '''
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'''""")
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result = testdir.runpytest("--fulltrace")
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result.stdout.fnmatch_lines([
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"*1 failed*",
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])
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assert 'SyntaxError' not in result.stdout.str()
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def test_traceback_failure(testdir):
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p1 = testdir.makepyfile("""
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def g():
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return 2
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def f(x):
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assert x == g()
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def test_onefails():
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f(3)
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""")
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result = testdir.runpytest(p1, "--tb=long")
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result.stdout.fnmatch_lines([
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"*test_traceback_failure.py F",
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"====* FAILURES *====",
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"____*____",
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"",
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" def test_onefails():",
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"> f(3)",
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"",
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"*test_*.py:6: ",
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"_ _ _ *",
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#"",
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" def f(x):",
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"> assert x == g()",
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"E assert 3 == 2",
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"E + where 2 = g()",
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"",
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"*test_traceback_failure.py:4: AssertionError"
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])
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result = testdir.runpytest(p1) # "auto"
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result.stdout.fnmatch_lines([
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"*test_traceback_failure.py F",
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"====* FAILURES *====",
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"____*____",
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"",
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" def test_onefails():",
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"> f(3)",
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"",
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"*test_*.py:6: ",
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"",
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" def f(x):",
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"> assert x == g()",
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"E assert 3 == 2",
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"E + where 2 = g()",
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"",
|
|
"*test_traceback_failure.py:4: AssertionError"
|
|
])
|
|
|
|
@pytest.mark.skipif("sys.version_info < (2,5) or '__pypy__' in sys.builtin_module_names or sys.platform.startswith('java')" )
|
|
def test_warn_missing(testdir):
|
|
testdir.makepyfile("")
|
|
result = testdir.run(sys.executable, "-OO", "-m", "pytest", "-h")
|
|
result.stderr.fnmatch_lines([
|
|
"*WARNING*assert statements are not executed*",
|
|
])
|
|
result = testdir.run(sys.executable, "-OO", "-m", "pytest", "--no-assert")
|
|
result.stderr.fnmatch_lines([
|
|
"*WARNING*assert statements are not executed*",
|
|
])
|
|
|
|
def test_recursion_source_decode(testdir):
|
|
testdir.makepyfile("""
|
|
def test_something():
|
|
pass
|
|
""")
|
|
testdir.makeini("""
|
|
[pytest]
|
|
python_files = *.py
|
|
""")
|
|
result = testdir.runpytest("--collect-only")
|
|
result.stdout.fnmatch_lines("""
|
|
<Module*>
|
|
""")
|
|
|
|
def test_AssertionError_message(testdir):
|
|
testdir.makepyfile("""
|
|
def test_hello():
|
|
x,y = 1,2
|
|
assert 0, (x,y)
|
|
""")
|
|
result = testdir.runpytest()
|
|
result.stdout.fnmatch_lines("""
|
|
*def test_hello*
|
|
*assert 0, (x,y)*
|
|
*AssertionError: (1, 2)*
|
|
""")
|