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# Copyright 2018 The Chromium Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""Check the basic functionalities of WPT tools.
This PRESUBMIT guards against rolling a broken version of WPT tooling. It does
some smoke checks of WPT functionality.
"""
import pathlib
import textwrap
def _TestWPTLint(input_api, output_api):
# We test 'wpt lint' by deferring to the web_tests/external presubmit test,
# which runs 'wpt lint' against web_tests/external/wpt.
abspath_to_test = input_api.os_path.join(
input_api.change.RepositoryRoot(),
'third_party', 'blink', 'web_tests', 'external', 'PRESUBMIT_test.py'
)
command = input_api.Command(
name='web_tests/external/PRESUBMIT_test.py',
cmd=[abspath_to_test],
kwargs={},
message=output_api.PresubmitError,
python3=True
)
if input_api.verbose:
print('Running ' + abspath_to_test)
return input_api.RunTests([command])
def _TestWPTManifest(input_api, output_api):
# We test 'wpt manifest' by making a copy of the base manifest and updating
# it. A copy is used so that this PRESUBMIT doesn't change files in the tree.
blink_path = input_api.os_path.join(
input_api.change.RepositoryRoot(), 'third_party', 'blink')
base_manifest = input_api.os_path.join(
blink_path, 'web_tests', 'external', 'WPT_BASE_MANIFEST_8.json')
with input_api.CreateTemporaryFile(mode = 'wt') as f:
f.write(input_api.ReadFile(base_manifest))
f.close()
wpt_exec_path = input_api.os_path.join(
input_api.change.RepositoryRoot(), 'third_party', 'wpt_tools', 'wpt', 'wpt')
external_wpt = input_api.os_path.join(
blink_path, 'web_tests', 'external', 'wpt')
try:
input_api.subprocess.check_output(
['python3', wpt_exec_path, 'manifest', '--no-download',
'--path', f.name, '--tests-root', external_wpt])
except input_api.subprocess.CalledProcessError as exc:
return [output_api.PresubmitError('wpt manifest failed:', long_text=exc.output)]
return []
def _TestWPTRolled(input_api, output_api):
"""Warn developers making manual changes to `wpt_tools/`."""
lines = input_api.change.DescriptionText().splitlines()
# No lines will be present when not run against a change (e.g., ToT).
if not lines or input_api.re.search(r'\broll wpt tooling\b', lines[0],
input_api.re.IGNORECASE):
return []
include_file = input_api.os_path.join(input_api.PresubmitLocalPath(),
'WPTIncludeList')
rolled_files = {pathlib.PurePosixPath(line)
for line in input_api.ReadFile(include_file).splitlines()}
wpt_dir = pathlib.Path(input_api.PresubmitLocalPath()) / 'wpt'
def exclude_unrolled_files(affected_file):
try:
path_from_wpt = pathlib.Path(
affected_file.AbsoluteLocalPath()).relative_to(wpt_dir)
return pathlib.PurePosixPath(path_from_wpt.as_posix()) in rolled_files
except ValueError:
# Exclude file relative to `wpt_tools` but not to `wpt_tools/wpt`.
return False
if input_api.AffectedFiles(file_filter=exclude_unrolled_files):
message = textwrap.dedent(
"""\
Thanks for your patch to `//third_party/wpt_tools/wpt`. This directory is
semiregularly overwritten by rolls from the upstream repo:
https://github.com/web-platform-tests/wpt
Please submit your change upstream as a pull request instead, then run
`//third_party/wpt_tools/roll_wpt.py` to pick up the change.
""")
return [output_api.PresubmitPromptWarning(message)]
return []
def CheckChangeOnUpload(input_api, output_api):
results = []
results += _TestWPTLint(input_api, output_api)
results += _TestWPTManifest(input_api, output_api)
results += _TestWPTRolled(input_api, output_api)
return results
def CheckChangeOnCommit(input_api, output_api):
results = []
results += _TestWPTLint(input_api, output_api)
results += _TestWPTManifest(input_api, output_api)
results += _TestWPTRolled(input_api, output_api)
return results
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