1 files changed, 44 insertions, 0 deletions
diff --git a/fixtures/tests/_fixtures/test_pythonpath.py b/fixtures/tests/_fixtures/test_pythonpath.py
new file mode 100644
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+++ b/fixtures/tests/_fixtures/test_pythonpath.py
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+#  fixtures: Fixtures with cleanups for testing and convenience.
+#
+# Copyright (c) 2011, Robert Collins <robertc@robertcollins.net>
+# 
+# Licensed under either the Apache License, Version 2.0 or the BSD 3-clause
+# license at the users choice. A copy of both licenses are available in the
+# project source as Apache-2.0 and BSD. You may not use this file except in
+# compliance with one of these two licences.
+# 
+# Unless required by applicable law or agreed to in writing, software
+# distributed under these licenses is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+# license you chose for the specific language governing permissions and
+# limitations under that license.
+
+import sys
+
+import testtools
+
+from fixtures import (
+    PythonPathEntry,
+    TempDir,
+    )
+
+
+class TestPythonPathEntry(testtools.TestCase):
+
+    def test_adds_missing_to_end_sys_path(self):
+        uniquedir = self.useFixture(TempDir()).path
+        fixture = PythonPathEntry(uniquedir)
+        self.assertFalse(uniquedir in sys.path)
+        with fixture:
+            self.assertTrue(uniquedir in sys.path)
+        self.assertFalse(uniquedir in sys.path)
+
+    def test_doesnt_alter_existing_entry(self):
+        existingdir = sys.path[0]
+        expectedlen = len(sys.path)
+        fixture = PythonPathEntry(existingdir)
+        with fixture:
+            self.assertTrue(existingdir in sys.path)
+            self.assertEqual(expectedlen, len(sys.path))
+        self.assertTrue(existingdir in sys.path)
+        self.assertEqual(expectedlen, len(sys.path))