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131 lines
3.9 KiB
Python
131 lines
3.9 KiB
Python
# Copyright (c) 2011 The Chromium Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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import inspect
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import unittest
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class OrderedDict(object):
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"""Incomplete and inefficient implementation of collections.OrderedDict."""
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def __init__(self):
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self._keys = []
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def setdefault(self, key, value):
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try:
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self._getindex(key)
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except KeyError:
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self._keys.append((key, value))
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return self[key]
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def _getindex(self, key):
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for i, v in enumerate(self._keys):
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if v[0] == key:
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return i
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raise KeyError(key)
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def __getitem__(self, key):
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return self._keys[self._getindex(key)][1]
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def iteritems(self):
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for i in self._keys:
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yield i
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class AutoStubMixIn(object):
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"""Automatically restores stubbed functions on unit test teardDown.
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It's an extremely lightweight mocking class that doesn't require bookeeping.
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"""
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_saved = None
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def mock(self, obj, member, mock):
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self._saved = self._saved or OrderedDict()
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old_value = self._saved.setdefault(
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obj, OrderedDict()).setdefault(member, getattr(obj, member))
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setattr(obj, member, mock)
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return old_value
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def tearDown(self):
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"""Restore all the mocked members."""
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if self._saved:
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for obj, items in self._saved.iteritems():
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for member, previous_value in items.iteritems():
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setattr(obj, member, previous_value)
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class SimpleMock(object):
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"""Really simple manual class mock."""
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calls = []
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def __init__(self, unit_test):
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"""Do not call __init__ if you want to use the global call list to detect
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ordering across different instances.
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"""
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self.calls = []
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self.unit_test = unit_test
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self.assertEquals = unit_test.assertEquals
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def pop_calls(self):
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"""Returns the list of calls up to date.
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Good to do self.assertEquals(expected, mock.pop_calls()).
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"""
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calls = self.calls
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self.calls = []
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return calls
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def check_calls(self, expected):
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self.assertEquals(expected, self.pop_calls())
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def _register_call(self, *args, **kwargs):
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"""Registers the name of the caller function."""
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caller_name = kwargs.pop('caller_name', None) or inspect.stack()[1][3]
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str_args = ', '.join(repr(arg) for arg in args)
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str_kwargs = ', '.join('%s=%r' % (k, v) for k, v in kwargs.iteritems())
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self.calls.append('%s(%s)' % (
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caller_name, ', '.join(filter(None, [str_args, str_kwargs]))))
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class TestCase(unittest.TestCase, AutoStubMixIn):
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"""Adds python 2.7 functionality."""
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def tearDown(self):
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AutoStubMixIn.tearDown(self)
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unittest.TestCase.tearDown(self)
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def has_failed(self):
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"""Returns True if the test has failed."""
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if hasattr(self, '_exc_info'):
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# Only present in python <= 2.6
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# pylint: disable=E1101
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return bool(self._exc_info()[0])
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# Only present in python >= 2.7
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# pylint: disable=E1101
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return not self._resultForDoCleanups.wasSuccessful()
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def assertIs(self, expr1, expr2, msg=None):
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if hasattr(super(TestCase, self), 'assertIs'):
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return super(TestCase, self).assertIs(expr1, expr2, msg)
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if expr1 is not expr2:
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self.fail(msg or '%r is not %r' % (expr1, expr2))
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def assertIsNot(self, expr1, expr2, msg=None):
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if hasattr(super(TestCase, self), 'assertIsNot'):
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return super(TestCase, self).assertIsNot(expr1, expr2, msg)
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if expr1 is expr2:
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self.fail(msg or 'unexpectedly identical: %r' % expr1)
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def assertIn(self, expr1, expr2, msg=None):
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if hasattr(super(TestCase, self), 'assertIn'):
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return super(TestCase, self).assertIn(expr1, expr2, msg)
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if expr1 not in expr2:
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self.fail(msg or '%r not in %r' % (expr1, expr2))
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def assertLess(self, a, b, msg=None):
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if hasattr(super(TestCase, self), 'assertLess'):
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return super(TestCase, self).assertLess(a, b, msg)
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if not a < b:
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self.fail(msg or '%r not less than %r' % (a, b))
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