use bazel runfiles

Author: navin772

py/BUILD.bazel

@@ -97,6 +97,7 @@ TEST_DEPS = [
     requirement("sortedcontainers"),
     requirement("sniffio"),
     requirement("zipp"),
+    "@rules_python//python/runfiles",
 ]
 
 copy_file(

py/test/selenium/webdriver/common/bidi_webextension_tests.py

@@ -19,6 +19,7 @@
 import os
 import pytest
 
+from python.runfiles import Runfiles
 from selenium.webdriver.common.by import By
 from selenium.webdriver.support.wait import WebDriverWait
 
@@ -27,7 +28,9 @@
 EXTENSION_PATH = "webextensions-selenium-example-signed"
 EXTENSION_ARCHIVE_PATH = "webextensions-selenium-example.xpi"
 
-extensions = os.path.abspath("../../../../../../test/extensions/")
+# Use bazel Runfiles to locate the test extension directory
+r = Runfiles.Create()
+extensions = r.Rlocation("selenium/py/test/extensions")
 
 
 def install_extension(driver, **kwargs):