Skip importing/export most .ini files in wpt codebase.

This will skip the various metadata .ini files that are currently
checked-in upstream (like for infrastructure tests). It will also avoid
exporting any chromium-specific metadata.ini files that we create in the
near future.

Bug: 1116091
Change-Id: I69389cd8410416d9b0e58789edb3bac84a886397
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2354517
Commit-Queue: Luke Z <lpz@chromium.org>
Reviewed-by: Robert Ma <robertma@chromium.org>
Cr-Commit-Position: refs/heads/master@{#798680}

third_party/blink/tools/blinkpy/w3c/common.py

@@ -67,6 +67,37 @@ def is_testharness_baseline(filename):
     return filename.endswith('-expected.txt')
 
 
+def is_disallowed_ini(filename):
+    """Checks whether the file is a disallowed (.ini) file.
+
+    This is primarily intended to skip WPT metadata .ini files, which are used
+    in WPT to set expected statuses for tests. Chromium maintains its own list
+    of such files and we don't want those to be shared with upstream.
+
+    There are a few .ini files that we do allow, which are mostly configuration
+    files for wptrunner.
+
+    Args:
+        filename: the basename of the file to check
+    """
+    if not filename.endswith('.ini'):
+        return False
+    allowed_inis = [
+        # Configuration for mypy support
+        'mypy.ini',
+        # Configuration of wpt lint
+        'py27-flake8.ini',
+        'py3-flake8.ini',
+        # Configuration of wpt framework unit tests
+        'pytest.ini',
+        'tox.ini',
+        # Contains default locations of tests and manifest for wptrunner.
+        # Required for wptrunner to work.
+        'wptrunner.default.ini',
+    ]
+    return filename not in allowed_inis
+
+
 def is_basename_skipped(basename):
     """Checks whether to skip (not sync) a file based on its basename.
 
@@ -81,7 +112,7 @@ def is_basename_skipped(basename):
         'DIR_METADATA',  # https://crbug.com/1103374
     ]
     return (basename in skipped_basenames or is_testharness_baseline(basename)
-            or basename.startswith('.'))
+            or basename.startswith('.') or is_disallowed_ini(basename))
 
 
 def is_file_exportable(path):

third_party/blink/tools/blinkpy/w3c/common_unittest.py

@@ -8,8 +8,8 @@ import unittest
 from blinkpy.common.host_mock import MockHost
 from blinkpy.common.path_finder import RELATIVE_WEB_TESTS
 from blinkpy.w3c.common import (read_credentials, is_testharness_baseline,
-                                is_basename_skipped, is_file_exportable,
-                                CHROMIUM_WPT_DIR)
+                                is_disallowed_ini, is_basename_skipped,
+                                is_file_exportable, CHROMIUM_WPT_DIR)
 
 
 class CommonTest(unittest.TestCase):
@@ -94,6 +94,12 @@ class CommonTest(unittest.TestCase):
         self.assertTrue(is_basename_skipped('.gitignore'))
         self.assertFalse(is_basename_skipped('something.json'))
 
+    def test_is_disallowed_ini(self):
+        self.assertFalse(is_disallowed_ini('tox.ini'))
+        self.assertFalse(is_disallowed_ini("wptrunner.default.ini"))
+        self.assertTrue(is_disallowed_ini('test.html.ini'))
+        self.assertTrue(is_disallowed_ini('__dir__.ini'))
+
     def test_is_basename_skipped_asserts_basename(self):
         with self.assertRaises(AssertionError):
             is_basename_skipped('third_party/fake/OWNERS')
@@ -109,6 +115,16 @@ class CommonTest(unittest.TestCase):
         self.assertFalse(is_file_exportable(CHROMIUM_WPT_DIR + 'dom/OWNERS'))
         self.assertFalse(
             is_file_exportable(CHROMIUM_WPT_DIR + 'dom/DIR_METADATA'))
+        self.assertTrue(
+            is_file_exportable(CHROMIUM_WPT_DIR +
+                               'tools/wptrunner/wptrunner.default.ini'))
+        self.assertFalse(
+            is_file_exportable(
+                CHROMIUM_WPT_DIR +
+                'infrastructure/metadata/infrastructure/expected-fail/timeout.html.ini'
+            ))
+        self.assertFalse(
+            is_file_exportable(CHROMIUM_WPT_DIR + 'dom/historical.html.ini'))
 
     def test_is_file_exportable_asserts_path(self):
         # Rejects basenames.