initial import of the packaging package in the standard library

Lib/packaging/tests/test_command_test.py

@@ -0,0 +1,225 @@
+import os
+import re
+import sys
+import shutil
+import logging
+import unittest as ut1
+import packaging.database
+
+from os.path import join
+from operator import getitem, setitem, delitem
+from packaging.command.build import build
+from packaging.tests import unittest
+from packaging.tests.support import (TempdirManager, EnvironRestorer,
+                                     LoggingCatcher)
+from packaging.command.test import test
+from packaging.command import set_command
+from packaging.dist import Distribution
+
+
+EXPECTED_OUTPUT_RE = r'''FAIL: test_blah \(myowntestmodule.SomeTest\)
+----------------------------------------------------------------------
+Traceback \(most recent call last\):
+  File ".+/myowntestmodule.py", line \d+, in test_blah
+    self.fail\("horribly"\)
+AssertionError: horribly
+'''
+
+here = os.path.dirname(os.path.abspath(__file__))
+
+
+class MockBuildCmd(build):
+    build_lib = "mock build lib"
+    command_name = 'build'
+    plat_name = 'whatever'
+
+    def initialize_options(self):
+        pass
+
+    def finalize_options(self):
+        pass
+
+    def run(self):
+        self._record.append("build has run")
+
+
+class TestTest(TempdirManager,
+               EnvironRestorer,
+               LoggingCatcher,
+               unittest.TestCase):
+
+    restore_environ = ['PYTHONPATH']
+
+    def setUp(self):
+        super(TestTest, self).setUp()
+        self.addCleanup(packaging.database.clear_cache)
+        new_pythonpath = os.path.dirname(os.path.dirname(here))
+        pythonpath = os.environ.get('PYTHONPATH')
+        if pythonpath is not None:
+            new_pythonpath = os.pathsep.join((new_pythonpath, pythonpath))
+        os.environ['PYTHONPATH'] = new_pythonpath
+
+    def assert_re_match(self, pattern, string):
+        def quote(s):
+            lines = ['## ' + line for line in s.split('\n')]
+            sep = ["#" * 60]
+            return [''] + sep + lines + sep
+        msg = quote(pattern) + ["didn't match"] + quote(string)
+        msg = "\n".join(msg)
+        if not re.search(pattern, string):
+            self.fail(msg)
+
+    def prepare_dist(self, dist_name):
+        pkg_dir = join(os.path.dirname(__file__), "dists", dist_name)
+        temp_pkg_dir = join(self.mkdtemp(), dist_name)
+        shutil.copytree(pkg_dir, temp_pkg_dir)
+        return temp_pkg_dir
+
+    def safely_replace(self, obj, attr,
+                       new_val=None, delete=False, dictionary=False):
+        """Replace a object's attribute returning to its original state at the
+        end of the test run. Creates the attribute if not present before
+        (deleting afterwards). When delete=True, makes sure the value is del'd
+        for the test run. If dictionary is set to True, operates of its items
+        rather than attributes."""
+        if dictionary:
+            _setattr, _getattr, _delattr = setitem, getitem, delitem
+
+            def _hasattr(_dict, value):
+                return value in _dict
+        else:
+            _setattr, _getattr, _delattr, _hasattr = (setattr, getattr,
+                                                      delattr, hasattr)
+
+        orig_has_attr = _hasattr(obj, attr)
+        if orig_has_attr:
+            orig_val = _getattr(obj, attr)
+
+        if delete is False:
+            _setattr(obj, attr, new_val)
+        elif orig_has_attr:
+            _delattr(obj, attr)
+
+        def do_cleanup():
+            if orig_has_attr:
+                _setattr(obj, attr, orig_val)
+            elif _hasattr(obj, attr):
+                _delattr(obj, attr)
+
+        self.addCleanup(do_cleanup)
+
+    def test_runs_unittest(self):
+        module_name, a_module = self.prepare_a_module()
+        record = []
+        a_module.recorder = lambda *args: record.append("suite")
+
+        class MockTextTestRunner:
+            def __init__(*_, **__):
+                pass
+
+            def run(_self, suite):
+                record.append("run")
+
+        self.safely_replace(ut1, "TextTestRunner", MockTextTestRunner)
+
+        dist = Distribution()
+        cmd = test(dist)
+        cmd.suite = "%s.recorder" % module_name
+        cmd.run()
+        self.assertEqual(record, ["suite", "run"])
+
+    def test_builds_before_running_tests(self):
+        self.addCleanup(set_command, 'packaging.command.build.build')
+        set_command('packaging.tests.test_command_test.MockBuildCmd')
+
+        dist = Distribution()
+        dist.get_command_obj('build')._record = record = []
+        cmd = test(dist)
+        cmd.runner = self.prepare_named_function(lambda: None)
+        cmd.ensure_finalized()
+        cmd.run()
+        self.assertEqual(['build has run'], record)
+
+    def _test_works_with_2to3(self):
+        pass
+
+    def test_checks_requires(self):
+        dist = Distribution()
+        cmd = test(dist)
+        phony_project = 'ohno_ohno-impossible_1234-name_stop-that!'
+        cmd.tests_require = [phony_project]
+        cmd.ensure_finalized()
+        logs = self.get_logs(logging.WARNING)
+        self.assertEqual(1, len(logs))
+        self.assertIn(phony_project, logs[0])
+
+    def prepare_a_module(self):
+        tmp_dir = self.mkdtemp()
+        sys.path.append(tmp_dir)
+        self.addCleanup(sys.path.remove, tmp_dir)
+
+        self.write_file((tmp_dir, 'packaging_tests_a.py'), '')
+        import packaging_tests_a as a_module
+        return "packaging_tests_a", a_module
+
+    def prepare_named_function(self, func):
+        module_name, a_module = self.prepare_a_module()
+        a_module.recorder = func
+        return "%s.recorder" % module_name
+
+    def test_custom_runner(self):
+        dist = Distribution()
+        cmd = test(dist)
+        record = []
+        cmd.runner = self.prepare_named_function(
+            lambda: record.append("runner called"))
+        cmd.ensure_finalized()
+        cmd.run()
+        self.assertEqual(["runner called"], record)
+
+    def prepare_mock_ut2(self):
+        class MockUTClass:
+            def __init__(*_, **__):
+                pass
+
+            def discover(self):
+                pass
+
+            def run(self, _):
+                pass
+
+        class MockUTModule:
+            TestLoader = MockUTClass
+            TextTestRunner = MockUTClass
+
+        mock_ut2 = MockUTModule()
+        self.safely_replace(sys.modules, "unittest2",
+                            mock_ut2, dictionary=True)
+        return mock_ut2
+
+    def test_gets_unittest_discovery(self):
+        mock_ut2 = self.prepare_mock_ut2()
+        dist = Distribution()
+        cmd = test(dist)
+        self.safely_replace(ut1.TestLoader, "discover", lambda: None)
+        self.assertEqual(cmd.get_ut_with_discovery(), ut1)
+
+        del ut1.TestLoader.discover
+        self.assertEqual(cmd.get_ut_with_discovery(), mock_ut2)
+
+    def test_calls_discover(self):
+        self.safely_replace(ut1.TestLoader, "discover", delete=True)
+        mock_ut2 = self.prepare_mock_ut2()
+        record = []
+        mock_ut2.TestLoader.discover = lambda self, path: record.append(path)
+        dist = Distribution()
+        cmd = test(dist)
+        cmd.run()
+        self.assertEqual([os.curdir], record)
+
+
+def test_suite():
+    return unittest.makeSuite(TestTest)
+
+if __name__ == "__main__":
+    unittest.main(defaultTest="test_suite")