1
# Copyright (C) 2004, 2005, 2006 Canonical Ltd
2
# Author: Robert Collins <robert.collins@canonical.com>
4
# This program is free software; you can redistribute it and/or modify
5
# it under the terms of the GNU General Public License as published by
6
# the Free Software Foundation; either version 2 of the License, or
7
# (at your option) any later version.
9
# This program is distributed in the hope that it will be useful,
10
# but WITHOUT ANY WARRANTY; without even the implied warranty of
11
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12
# GNU General Public License for more details.
14
# You should have received a copy of the GNU General Public License
15
# along with this program; if not, write to the Free Software
16
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23
# Mark this python module as being part of the implementation
24
# of unittest: this gives us better tracebacks where the last
25
# shown frame is the test code, not our assertXYZ.
29
class LogCollector(logging.Handler):
31
logging.Handler.__init__(self)
33
def emit(self, record):
34
self.records.append(record.getMessage())
37
def makeCollectingLogger():
38
"""I make a logger instance that collects its logs for programmatic analysis
39
-> (logger, collector)"""
40
logger=logging.Logger("collector")
41
handler=LogCollector()
42
handler.setFormatter(logging.Formatter("%(levelname)s: %(message)s"))
43
logger.addHandler(handler)
44
return logger, handler
47
def visitTests(suite, visitor):
48
"""A foreign method for visiting the tests in a test suite."""
49
for test in suite._tests:
50
#Abusing types to avoid monkey patching unittest.TestCase.
51
# Maybe that would be better?
54
except AttributeError:
55
if isinstance(test, unittest.TestCase):
56
visitor.visitCase(test)
57
elif isinstance(test, unittest.TestSuite):
58
visitor.visitSuite(test)
59
visitTests(test, visitor)
61
print "unvisitable non-unittest.TestCase element %r (%r)" % (test, test.__class__)
64
class TestSuite(unittest.TestSuite):
65
"""I am an extended TestSuite with a visitor interface.
66
This is primarily to allow filtering of tests - and suites or
67
more in the future. An iterator of just tests wouldn't scale..."""
69
def visit(self, visitor):
70
"""visit the composite. Visiting is depth-first.
71
current callbacks are visitSuite and visitCase."""
72
visitor.visitSuite(self)
73
visitTests(self, visitor)
76
class TestLoader(unittest.TestLoader):
77
"""Custom TestLoader to extend the stock python one."""
79
suiteClass = TestSuite
80
# Memoize test names by test class dict
83
def loadTestsFromModuleNames(self, names):
84
"""use a custom means to load tests from modules.
86
There is an undesirable glitch in the python TestLoader where a
87
import error is ignore. We think this can be solved by ensuring the
88
requested name is resolvable, if its not raising the original error.
90
result = self.suiteClass()
92
module = _load_module_by_name(name)
93
result.addTests(self.loadTestsFromModule(module))
96
def loadTestsFromModule(self, module):
97
"""Load tests from a module object.
99
This extension of the python test loader looks for an attribute
100
load_tests in the module object, and if not found falls back to the
101
regular python loadTestsFromModule.
103
If a load_tests attribute is found, it is called and the result is
106
load_tests should be defined like so:
107
>>> def load_tests(standard_tests, module, loader):
110
standard_tests is the tests found by the stock TestLoader in the
111
module, module and loader are the module and loader instances.
113
For instance, to run every test twice, you might do:
114
>>> def load_tests(standard_tests, module, loader):
115
>>> result = loader.suiteClass()
116
>>> for test in iter_suite_tests(standard_tests):
117
>>> result.addTests([test, test])
120
basic_tests = super(TestLoader, self).loadTestsFromModule(module)
121
load_tests = getattr(module, "load_tests", None)
122
if load_tests is not None:
123
return load_tests(basic_tests, module, self)
127
def getTestCaseNames(self, test_case_class):
128
test_fn_names = self.test_func_names.get(test_case_class, None)
129
if test_fn_names is not None:
130
# We already calculate that
133
test_fn_names = unittest.TestLoader.getTestCaseNames(self,
135
self.test_func_names[test_case_class] = test_fn_names
138
def _load_module_by_name(mod_name):
139
parts = mod_name.split('.')
140
module = __import__(mod_name)
142
# for historical reasons python returns the top-level module even though
143
# it loads the submodule; we need to walk down to get the one we want.
145
module = getattr(module, parts.pop(0))
149
class TestVisitor(object):
150
"""A visitor for Tests"""
151
def visitSuite(self, aTestSuite):
153
def visitCase(self, aTestCase):
added
removed
bzrlib/tests/TestUtil.py
