Add Python test for using Marionette with a custom profile

py/test/selenium/webdriver/firefox/mn_profile_tests.py

@@ -0,0 +1,49 @@
+# Licensed to the Software Freedom Conservancy (SFC) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The SFC licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+import pytest
+from selenium import webdriver
+from selenium.webdriver.common.desired_capabilities import DesiredCapabilities
+
+
+@pytest.fixture
+def capabilities():
+    capabilities = DesiredCapabilities.FIREFOX.copy()
+    capabilities['marionette'] = True
+    return capabilities
+
+
+@pytest.yield_fixture
+def driver(capabilities, profile):
+    driver = webdriver.Firefox(
+        capabilities=capabilities,
+        firefox_profile=profile)
+    yield driver
+    driver.quit()
+
+
+@pytest.fixture
+def profile():
+    profile = webdriver.FirefoxProfile()
+    profile.set_preference('browser.startup.homepage_override.mstone', '')
+    profile.set_preference('startup.homepage_welcome_url', 'about:')
+    profile.update_preferences()
+    return profile
+
+
+def test_profile_is_used(driver):
+    assert 'about:' == driver.current_url