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#!/usr/bin/env python3
# Copyright 2023 The Chromium Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
import os
import pathlib
import shutil
import sys
import tempfile
import time
import unittest
import action_helpers
class ActionHelpersTest(unittest.TestCase):
def test_atomic_output(self):
tmp_file = pathlib.Path(tempfile.mktemp())
tmp_file.write_text('test')
try:
# Test that same contents does not change mtime.
orig_mtime = os.path.getmtime(tmp_file)
with action_helpers.atomic_output(str(tmp_file), 'wt') as af:
time.sleep(.01)
af.write('test')
self.assertEqual(os.path.getmtime(tmp_file), orig_mtime)
# Test that contents is written.
with action_helpers.atomic_output(str(tmp_file), 'wt') as af:
af.write('test2')
self.assertEqual(tmp_file.read_text(), 'test2')
self.assertNotEqual(os.path.getmtime(tmp_file), orig_mtime)
finally:
tmp_file.unlink()
def test_parse_gn_list(self):
def test(value, expected):
self.assertEqual(action_helpers.parse_gn_list(value), expected)
test(None, [])
test('', [])
test('asdf', ['asdf'])
test('["one"]', ['one'])
test(['["one"]', '["two"]'], ['one', 'two'])
test(['["one", "two"]', '["three"]'], ['one', 'two', 'three'])
def test_write_depfile(self):
tmp_file = pathlib.Path(tempfile.mktemp())
try:
def capture_output(inputs):
action_helpers.write_depfile(str(tmp_file), 'output', inputs)
return tmp_file.read_text()
self.assertEqual(capture_output(None), 'output: \n')
self.assertEqual(capture_output([]), 'output: \n')
self.assertEqual(capture_output(['a']), 'output: \\\n a\n')
# Check sorted.
self.assertEqual(capture_output(['b', 'a']), 'output: \\\n a \\\n b\n')
# Check converts to forward slashes.
self.assertEqual(capture_output(['a', os.path.join('b', 'c')]),
'output: \\\n a \\\n b/c\n')
# Arg should be a list.
with self.assertRaises(AssertionError):
capture_output('a')
# Do not use depfile itself as an output.
with self.assertRaises(AssertionError):
capture_output([str(tmp_file)])
# Do not use absolute paths.
with self.assertRaises(AssertionError):
capture_output([os.path.sep + 'foo'])
# Do not use absolute paths (output path).
with self.assertRaises(AssertionError):
action_helpers.write_depfile(str(tmp_file), '/output', [])
finally:
tmp_file.unlink()
if __name__ == '__main__':
unittest.main()
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