Current File : //lib/python3/dist-packages/twisted/trial/test/packages.py
# Copyright (c) Twisted Matrix Laboratories.
# See LICENSE for details.
#
"""
Classes and functions used by L{twisted.trial.test.test_util}
and L{twisted.trial.test.test_loader}.
"""
import os
import sys
# Python 3 has some funny import caching, which we don't want.
# invalidate_caches clears it out for us.
from importlib import invalidate_caches as invalidateImportCaches
from twisted.trial import unittest
testModule = """
from twisted.trial import unittest
class FooTest(unittest.SynchronousTestCase):
def testFoo(self):
pass
"""
dosModule = testModule.replace("\n", "\r\n")
testSample = """
'''This module is used by test_loader to test the Trial test loading
functionality. Do NOT change the number of tests in this module.
Do NOT change the names the tests in this module.
'''
import unittest as pyunit
from twisted.trial import unittest
class FooTest(unittest.SynchronousTestCase):
def test_foo(self):
pass
def test_bar(self):
pass
class PyunitTest(pyunit.TestCase):
def test_foo(self):
pass
def test_bar(self):
pass
class NotATest:
def test_foo(self):
pass
class AlphabetTest(unittest.SynchronousTestCase):
def test_a(self):
pass
def test_b(self):
pass
def test_c(self):
pass
"""
testInheritanceSample = """
'''This module is used by test_loader to test the Trial test loading
functionality. Do NOT change the number of tests in this module.
Do NOT change the names the tests in this module.
'''
from twisted.trial import unittest
class X:
def test_foo(self):
pass
class A(unittest.SynchronousTestCase, X):
pass
class B(unittest.SynchronousTestCase, X):
pass
"""
class PackageTest(unittest.SynchronousTestCase):
files = [
("badpackage/__init__.py", "frotz\n"),
("badpackage/test_module.py", ""),
("unimportablepackage/__init__.py", ""),
("unimportablepackage/test_module.py", "import notarealmoduleok\n"),
("package2/__init__.py", ""),
("package2/test_module.py", "import frotz\n"),
("package/__init__.py", ""),
("package/frotz.py", "frotz\n"),
("package/test_bad_module.py", 'raise ZeroDivisionError("fake error")'),
("package/test_dos_module.py", dosModule),
("package/test_import_module.py", "import frotz"),
("package/test_module.py", testModule),
("goodpackage/__init__.py", ""),
("goodpackage/test_sample.py", testSample),
("goodpackage/sub/__init__.py", ""),
("goodpackage/sub/test_sample.py", testSample),
("inheritancepackage/__init__.py", ""),
("inheritancepackage/test_x.py", testInheritanceSample),
]
def _toModuleName(self, filename):
name = os.path.splitext(filename)[0]
segs = name.split("/")
if segs[-1] == "__init__":
segs = segs[:-1]
return ".".join(segs)
def getModules(self):
"""
Return matching module names for files listed in C{self.files}.
"""
return [self._toModuleName(filename) for (filename, code) in self.files]
def cleanUpModules(self):
modules = self.getModules()
modules.sort()
modules.reverse()
for module in modules:
try:
del sys.modules[module]
except KeyError:
pass
def createFiles(self, files, parentDir="."):
for filename, contents in self.files:
filename = os.path.join(parentDir, filename)
self._createDirectory(filename)
with open(filename, "w") as fd:
fd.write(contents)
def _createDirectory(self, filename):
directory = os.path.dirname(filename)
if not os.path.exists(directory):
os.makedirs(directory)
def setUp(self, parentDir=None):
invalidateImportCaches()
if parentDir is None:
parentDir = self.mktemp()
self.parent = parentDir
self.createFiles(self.files, parentDir)
def tearDown(self):
self.cleanUpModules()
class SysPathManglingTest(PackageTest):
def setUp(self, parent=None):
invalidateImportCaches()
self.oldPath = sys.path[:]
self.newPath = sys.path[:]
if parent is None:
parent = self.mktemp()
PackageTest.setUp(self, parent)
self.newPath.append(self.parent)
self.mangleSysPath(self.newPath)
def tearDown(self):
PackageTest.tearDown(self)
self.mangleSysPath(self.oldPath)
def mangleSysPath(self, pathVar):
sys.path[:] = pathVar
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