Add Firefox test for stopping driver

Author: cgoldberg

py/test/selenium/webdriver/chrome/chrome_service_tests.py

@@ -18,6 +18,7 @@
 import os
 import subprocess
 import time
+
 from unittest.mock import patch
 
 import pytest

py/test/selenium/webdriver/edge/edge_service_tests.py

@@ -18,6 +18,7 @@
 import os
 import subprocess
 import time
+
 from unittest.mock import patch
 
 import pytest

py/test/selenium/webdriver/firefox/firefox_service_tests.py

@@ -14,13 +14,18 @@
 # KIND, either express or implied.  See the License for the
 # specific language governing permissions and limitations
 # under the License.
+
 import os
 import subprocess
+
 from unittest.mock import patch
 
 import pytest
 
 from selenium.webdriver import Firefox
+from selenium.common.exceptions import SessionNotCreatedException
+from selenium.common.exceptions import WebDriverException
+from selenium.webdriver.firefox.options import Options
 from selenium.webdriver.firefox.service import Service
 
 
@@ -61,6 +66,21 @@ def test_log_output_as_stdout(capfd) -> None:
     driver.quit()
 
 
+def test_driver_is_stopped_if_browser_cant_start(clean_driver, driver_executable) -> None:
+    options = Options()
+    #options.set_preference('profile', "/no/such/location")
+    options.add_argument("-profile==/no/such/location")
+    service = Service()
+    with pytest.raises(SessionNotCreatedException):
+        driver = clean_driver(options=options, service=service)
+    assert not service.is_connectable()
+    assert service.process.poll() < 0
+    try:
+        driver.quit()
+    except Exception:
+        pass
+
+
 @pytest.fixture
 def service():
     return Service()