Bug 1816989 - Remove unnecessary python import dirs tweaks from webextensions...

Bug 1816989 - Remove unnecessary python import dirs tweaks from webextensions python tests. r=willdurand

It seems that the changes introduced in python 3.3 (see https://peps.python.org/pep-0420/) made the previous
workaround not needed anymore.

Depends on D169964

Differential Revision: https://phabricator.services.mozilla.com/D170080

toolkit/components/extensions/webidl-api/test/README.md

@@ -31,11 +31,8 @@ To add a new test file to this test suite:
     `helpers` module does also enable the code coverage if the environment variable
     is detected):
     ```
-    # Import test helpers module.
-    OUR_DIR = mozpath.abspath(mozpath.dirname(__file__))
-    sys.path.append(OUR_DIR)
-
-    import helpers
+    import helpers  # Import test helpers module.
+    ...
 
     helpers.setup()
     ```

toolkit/components/extensions/webidl-api/test/test_all_schemas_smoketest.py

@@ -2,17 +2,9 @@
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
-import sys
-
-import mozpack.path as mozpath
+import helpers  # Import test helpers module.
 import mozunit
 
-# Import test helpers module.
-OUR_DIR = mozpath.abspath(mozpath.dirname(__file__))
-sys.path.append(OUR_DIR)
-
-import helpers
-
 helpers.setup()
 
 from GenerateWebIDLBindings import load_and_parse_JSONSchema

toolkit/components/extensions/webidl-api/test/test_json_schema_parsing.py

@@ -4,19 +4,12 @@
 
 import json
 import os
-import sys
 from textwrap import dedent
 
-import mozpack.path as mozpath
+import helpers  # Import test helpers module.
 import mozunit
 import pytest
 
-# Import test helpers module.
-OUR_DIR = mozpath.abspath(mozpath.dirname(__file__))
-sys.path.append(OUR_DIR)
-
-import helpers
-
 helpers.setup()
 
 from GenerateWebIDLBindings import APIEvent, APIFunction, APINamespace, APIType, Schemas

toolkit/components/extensions/webidl-api/test/test_json_schema_platform_diffs.py

@@ -3,19 +3,12 @@
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
 import os
-import sys
 import types
 from textwrap import dedent
 
-import mozpack.path as mozpath
+import helpers  # Import test helpers module.
 import mozunit
 
-# Import test helpers module.
-OUR_DIR = mozpath.abspath(mozpath.dirname(__file__))
-sys.path.append(OUR_DIR)
-
-import helpers
-
 helpers.setup()
 
 from GenerateWebIDLBindings import Schemas

toolkit/components/extensions/webidl-api/test/test_webidl_from_json_schema.py

@@ -2,18 +2,11 @@
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
-import sys
 from textwrap import dedent
 
-import mozpack.path as mozpath
+import helpers  # Import test helpers module.
 import mozunit
 
-# Import test helpers module.
-OUR_DIR = mozpath.abspath(mozpath.dirname(__file__))
-sys.path.append(OUR_DIR)
-
-import helpers
-
 helpers.setup()
 
 from GenerateWebIDLBindings import (