facilitate creating and installing WebExtensions during tests

It is now possible to more conveniently test WebExtension APIs code by wrapping it into a test WebExtension and temporarily installing in the driven browser.

1 files changed, 15 insertions, 2 deletions

diff --git a/test/unit/test_basic.py b/test/unit/test_basic.py
index cbe5c8c..3b09cb6 100644
--- a/test/unit/test_basic.py
+++ b/test/unit/test_basic.py
@@ -26,8 +26,9 @@ def test_driver(driver):
     """
     for proto in ['http://', 'https://']:
         driver.get(proto + 'gotmyowndoma.in')
-        element = driver.find_element_by_tag_name('title')
-        title = driver.execute_script('return arguments[0].innerText;', element)
+        title = driver.execute_script(
+            'return document.getElementsByTagName("title")[0].innerText;'
+        )
         assert "Schrodinger's Document" in title
 
 def test_script_loader(execute_in_page, load_into_page):
@@ -39,3 +40,15 @@ def test_script_loader(execute_in_page, load_into_page):
                    page='https://gotmyowndoma.in')
 
     assert execute_in_page('returnval(TYPE_PREFIX.VAR);') == '_'
+
+@pytest.mark.ext_data({})
+def test_webextension(driver, webextension):
+    """
+    A trivial test case that verifies a test WebExtension created and installed
+    by the `webextension` fixture works and redirects specially-constructed URLs
+    to its test page.
+    """
+    heading = driver.execute_script(
+        'return document.getElementsByTagName("h1")[0].innerText;'
+    )
+    assert "Extension's options page for testing" in heading