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# Copyright 2017 The Bazel Authors. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Tests for TempJunction."""
import os
import unittest
from src.test.py.bazel import test_base
from tools.android import junction
class JunctionTest(test_base.TestBase):
"""Unit tests for junction.py."""
def _AssertCreateJunctionWhenTargetsParentsDontExist(self, max_path=None):
def tempdir():
return self.ScratchDir("junc temp")
target = self.Path("this directory/should not\\yet exist")
self.assertFalse(os.path.exists(os.path.dirname(os.path.dirname(target))))
# Make the `target` path a non-normalized Windows path with a space in it
# which doesn't even exist.
# TempJunction should still work; it should:
# - normalize the path, and
# - create all directories on the path
# target = os.path.dirname(target) + "/junc target"
juncpath = None
with junction.TempJunction(
target, testonly_mkdtemp=tempdir, testonly_maxpath=max_path) as j:
juncpath = j
# Ensure that `j` created the junction.
self.assertTrue(os.path.exists(target))
self.assertTrue(os.path.exists(juncpath))
self.assertTrue(juncpath.endswith(os.path.join("junc temp", "j")))
self.assertTrue(os.path.isabs(juncpath))
# Create a file under the junction.
filepath = os.path.join(juncpath, "some file.txt")
with open(filepath, "w") as f:
f.write("hello")
# Ensure we can reach the file via the junction and the target directory.
self.assertTrue(os.path.exists(os.path.join(target, "some file.txt")))
self.assertTrue(os.path.exists(os.path.join(juncpath, "some file.txt")))
# Ensure that after the `with` block the junction and temp directories no
# longer exist, but we can still reach the file via the target directory.
self.assertTrue(os.path.exists(os.path.join(target, "some file.txt")))
self.assertFalse(os.path.exists(os.path.join(juncpath, "some file.txt")))
self.assertFalse(os.path.exists(juncpath))
self.assertFalse(os.path.exists(os.path.dirname(juncpath)))
def testCreateJunctionWhenTargetsParentsDontExistAndPathIsShort(self):
self._AssertCreateJunctionWhenTargetsParentsDontExist()
def testCreateJunctionWhenTargetsParentsDontExistAndPathIsLong(self):
self._AssertCreateJunctionWhenTargetsParentsDontExist(1)
def testCannotCreateJunction(self):
def tempdir():
return self.ScratchDir("junc temp")
target = self.ScratchDir("junc target")
# Make the `target` path a non-normalized Windows path with a space in it.
# TempJunction should still work.
target = os.path.dirname(target) + "/junc target"
with junction.TempJunction(target, testonly_mkdtemp=tempdir) as j:
self.assertTrue(os.path.exists(j))
try:
# Ensure that TempJunction raises a JunctionCreationError if it cannot
# create a junction. In this case the junction already exists in that
# directory.
with junction.TempJunction(target, testonly_mkdtemp=tempdir) as _:
self.fail("Expected exception")
except junction.JunctionCreationError:
pass # expected
if __name__ == "__main__":
unittest.main()
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