| # Copyright 2017 The Chromium Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| """WPTManifest is responsible for handling MANIFEST.json. |
| |
| The MANIFEST.json file contains metadata about files in web-platform-tests, |
| such as what tests exist, and extra information about each test, including |
| test type, options, URLs to use, and reference file paths if applicable. |
| """ |
| |
| import json |
| import logging |
| |
| from blinkpy.common.memoized import memoized |
| from blinkpy.common.path_finder import PathFinder |
| |
| _log = logging.getLogger(__file__) |
| |
| |
| # The filename used for the base manifest includes the version as a |
| # workaround for trouble landing huge changes to the base manifest when |
| # the version changes. See https://crbug.com/876717. |
| BASE_MANIFEST_NAME = 'WPT_BASE_MANIFEST_5.json' |
| |
| # TODO(robertma): Use the official wpt.manifest module. |
| |
| class WPTManifest(object): |
| """A simple abstraction of WPT MANIFEST.json. |
| |
| The high-level structure of the manifest is as follows: |
| { |
| "items": { |
| "manual": { |
| "file/path": [manifest items], |
| ... |
| }, |
| "reftest": {...}, |
| "testharness": {...} |
| }, |
| // other info... |
| } |
| |
| The format of a manifest item depends on: |
| https://github.com/web-platform-tests/wpt/blob/master/tools/manifest/item.py |
| which can be roughly summarized as follows: |
| * testharness test: [url, extras] |
| * reftest: [url, references, extras] |
| where `extras` is a dict with the following optional items: |
| * testharness test: {"timeout": "long", "testdriver": True} |
| * reftest: {"timeout": "long", "viewport_size": ..., "dpi": ...} |
| and `references` is a list that looks like: |
| [[reference_url1, "=="], [reference_url2, "!="], ...] |
| """ |
| |
| |
| |
| def __init__(self, json_content): |
| self.raw_dict = json.loads(json_content) |
| self.test_types = ('manual', 'reftest', 'testharness') |
| |
| def _items_for_file_path(self, path_in_wpt): |
| """Finds manifest items for the given WPT path. |
| |
| Args: |
| path_in_wpt: A file path relative to the root of WPT. Note that this |
| is different from a WPT URL; a file path does not have a leading |
| slash or a query string. |
| |
| Returns: |
| A list of manifest items, or None if not found. |
| """ |
| items = self.raw_dict['items'] |
| for test_type in self.test_types: |
| if path_in_wpt in items[test_type]: |
| return items[test_type][path_in_wpt] |
| return None |
| |
| def _item_for_url(self, url): |
| """Finds the manifest item for the given WPT URL. |
| |
| Args: |
| url: A WPT URL (with the leading slash). |
| |
| Returns: |
| A manifest item, or None if not found. |
| """ |
| return self.all_url_items().get(url) |
| |
| @staticmethod |
| def _get_url_from_item(item): |
| return item[0] |
| |
| @staticmethod |
| def _get_extras_from_item(item): |
| return item[-1] |
| |
| @staticmethod |
| def _is_not_jsshell(item): |
| """Returns True if the manifest item isn't a jsshell test. |
| |
| "jsshell" is one of the scopes automatically generated from .any.js |
| tests. It is intended to run in a thin JavaScript shell instead of a |
| full browser, so we simply ignore it in web tests. (crbug.com/871950) |
| """ |
| extras = WPTManifest._get_extras_from_item(item) |
| return not extras.get('jsshell', False) |
| |
| @memoized |
| def all_url_items(self): |
| """Returns a dict mapping every URL in the manifest to its item.""" |
| url_items = {} |
| if 'items' not in self.raw_dict: |
| return url_items |
| for test_type in self.test_types: |
| for records in self.raw_dict['items'][test_type].itervalues(): |
| for item in filter(self._is_not_jsshell, records): |
| url_items[self._get_url_from_item(item)] = item |
| return url_items |
| |
| @memoized |
| def all_urls(self): |
| """Returns a set of the URLs for all items in the manifest.""" |
| return frozenset(self.all_url_items().keys()) |
| |
| def is_test_file(self, path_in_wpt): |
| return self._items_for_file_path(path_in_wpt) is not None |
| |
| def is_test_url(self, url): |
| """Checks if url is a valid test in the manifest. |
| |
| The url must be the WPT test name with a leading slash (/). |
| """ |
| if url[0] != '/': |
| raise Exception('Test url missing leading /: %s' % url) |
| return url in self.all_urls() |
| |
| def file_path_to_url_paths(self, path_in_wpt): |
| manifest_items = self._items_for_file_path(path_in_wpt) |
| assert manifest_items is not None |
| # Remove the leading slashes when returning. |
| return [self._get_url_from_item(item)[1:] |
| for item in manifest_items if self._is_not_jsshell(item)] |
| |
| def is_slow_test(self, url): |
| """Checks if a WPT is slow (long timeout) according to the manifest. |
| |
| Args: |
| url: A WPT URL (with the leading slash). |
| |
| Returns: |
| True if the test is found and is slow, False otherwise. |
| """ |
| if not self.is_test_url(url): |
| return False |
| |
| item = self._item_for_url(url) |
| if not item: |
| return False |
| extras = self._get_extras_from_item(item) |
| return extras.get('timeout') == 'long' |
| |
| def extract_reference_list(self, path_in_wpt): |
| """Extracts reference information of the specified reference test. |
| |
| The return value is a list of (match/not-match, reference path in wpt) |
| pairs, like: |
| [("==", "foo/bar/baz-match.html"), |
| ("!=", "foo/bar/baz-mismatch.html")] |
| """ |
| all_items = self.raw_dict['items'] |
| if path_in_wpt not in all_items['reftest']: |
| return [] |
| reftest_list = [] |
| for item in all_items['reftest'][path_in_wpt]: |
| for ref_path_in_wpt, expectation in item[1]: |
| reftest_list.append((expectation, ref_path_in_wpt)) |
| return reftest_list |
| |
| @staticmethod |
| def ensure_manifest(host): |
| """Updates the MANIFEST.json file, or generates if it does not exist.""" |
| finder = PathFinder(host.filesystem) |
| manifest_path = finder.path_from_web_tests('external', 'wpt', 'MANIFEST.json') |
| base_manifest_path = finder.path_from_web_tests('external', BASE_MANIFEST_NAME) |
| |
| if not host.filesystem.exists(base_manifest_path): |
| _log.error('Manifest base not found at "%s".', base_manifest_path) |
| host.filesystem.write_text_file(base_manifest_path, '{}') |
| |
| # Unconditionally replace MANIFEST.json with the base manifest even if |
| # the former exists, to avoid regenerating the manifest from scratch |
| # when the manifest version changes. Remove the destination first as |
| # copyfile will fail if the two files are hardlinked or symlinked. |
| if host.filesystem.exists(manifest_path): |
| host.filesystem.remove(manifest_path) |
| host.filesystem.copyfile(base_manifest_path, manifest_path) |
| |
| wpt_path = finder.path_from_web_tests('external', 'wpt') |
| WPTManifest.generate_manifest(host, wpt_path) |
| |
| _log.debug('Manifest generation completed.') |
| |
| @staticmethod |
| def generate_manifest(host, dest_path): |
| """Generates MANIFEST.json on the specified directory.""" |
| finder = PathFinder(host.filesystem) |
| wpt_exec_path = finder.path_from_blink_tools('blinkpy', 'third_party', 'wpt', 'wpt', 'wpt') |
| cmd = ['python', wpt_exec_path, 'manifest', '--work', '--tests-root', dest_path] |
| |
| # ScriptError will be raised if the command fails. |
| host.executive.run_command( |
| cmd, |
| return_stderr=True # This will also include stderr in the exception message. |
| ) |