diff --git a/foxpuppet/windows/browser/notifications/addons.py b/foxpuppet/windows/browser/notifications/addons.py
index 6f422b4..d5aa52a 100644
--- a/foxpuppet/windows/browser/notifications/addons.py
+++ b/foxpuppet/windows/browser/notifications/addons.py
@@ -102,14 +102,6 @@ def is_downloading(self):
         with self.selenium.context(self.selenium.CONTEXT_CHROME):
             return "Downloading and verifying add-on…" in self.find_description().text
 
-    def wait_until_complete(self, timeout=None):
-        """Wait until the progress notification disappears, indicating completion.
-
-        Args:
-            timeout (int, optional): Maximum time to wait in seconds.
-        """
-        self.window.wait_for_notification(None, timeout=timeout)
-
 
 # Clean up of these notifications will happen once Firefox ESR is past version 63
 # https://github.com/mozilla/FoxPuppet/issues/212
diff --git a/tests/test_notifications.py b/tests/test_notifications.py
index 67a9bcb..a39e6e3 100644
--- a/tests/test_notifications.py
+++ b/tests/test_notifications.py
@@ -5,24 +5,29 @@
 
 import pytest
 from selenium.common.exceptions import TimeoutException
+from selenium.webdriver.support.ui import WebDriverWait
+from selenium.webdriver.support import expected_conditions as EC
+from selenium.webdriver.common.by import By
 
 from foxpuppet.windows.browser.notifications import BaseNotification
-from selenium.webdriver.common.by import By
 from foxpuppet.windows.browser.notifications.addons import (
     AddOnInstallBlocked,
     AddOnInstallComplete,
     AddOnInstallConfirmation,
     AddOnInstallFailed,
+    AddOnProgress,
 )
 
 
 @pytest.fixture
-def firefox_options(firefox_options):
+def firefox_options(request, firefox_options):
     """Fixture for configuring Firefox."""
     # Due to https://bugzilla.mozilla.org/show_bug.cgi?id=1329939 we need the
     # initial browser window to be in the foreground. Without this, the
     # notifications will not be displayed.
     firefox_options.add_argument("-foreground")
+    if getattr(request, "param", {}).get("page_load_strategy_none", False):
+        firefox_options.set_capability("pageLoadStrategy", "none")
     return firefox_options
 
 
@@ -40,18 +45,39 @@ def addon():
     class AddOn:
         def __init__(self):
             self.name = "WebExtension"
-            self.paths = {
+            self._paths = {
                 "default": "webextension.xpi",
                 "corrupt": "corruptwebextension.xpi",
+                "large": "largewebextension.xpi",
             }
 
-        def get_path(self, size="default"):
-            """Returns web extension path."""
-            return self.paths.get(size, self.paths["default"])
+        @property
+        def path(self):
+            """Default path."""
+            return self._paths["default"]
+
+        def get_path(self, ext_path):
+            """Returns the web extension path."""
+            return self._paths.get(ext_path)
 
     return AddOn()
 
 
+@pytest.fixture
+def progress_notification(addon, browser, webserver, selenium):
+    """Fixture that triggers the download progress notification.
+
+    Returns:
+        :py:class:AddOnProgress: Firefox notification.
+    """
+    selenium.get(webserver.url)
+    element = WebDriverWait(selenium, 10).until(
+        EC.element_to_be_clickable((By.LINK_TEXT, addon.get_path("large")))
+    )
+    element.click()
+    return browser.wait_for_notification(AddOnProgress)
+
+
 @pytest.fixture
 def blocked_notification(addon, browser, webserver, selenium):
     """Fixture causing a blocked notification to appear in Firefox.
@@ -60,8 +86,8 @@ def blocked_notification(addon, browser, webserver, selenium):
         :py:class:`AddOnInstallBlocked`: Firefox notification.
 
     """
-    selenium.get(webserver.url())
-    selenium.find_element(By.LINK_TEXT, addon.get_path()).click()
+    selenium.get(webserver.url)
+    selenium.find_element(By.LINK_TEXT, addon.path).click()
     return browser.wait_for_notification(AddOnInstallBlocked)
 
 
@@ -96,7 +122,7 @@ def failed_notification(addon, browser, webserver, selenium):
     Returns:
         :py:class:`AddOnInstallFailed`: Firefox notification.
     """
-    selenium.get(webserver.url())
+    selenium.get(webserver.url)
     selenium.find_element(By.LINK_TEXT, addon.get_path("corrupt")).click()
     return browser.wait_for_notification(AddOnInstallFailed)
 
@@ -164,3 +190,12 @@ def test_failed_installation_notification(failed_notification):
     """Test that a failed installation notification is shown for a corrupt add-on."""
     error_text = "The add-on downloaded from this site could not be installed because it appears to be corrupt."
     assert failed_notification.error_message == error_text
+
+
+@pytest.mark.parametrize(
+    "firefox_options", [{"page_load_strategy_none": True}], indirect=True
+)
+def test_progress_notification_downloading(browser, progress_notification):
+    """Verify downloading status is reported correctly."""
+    description = progress_notification.is_downloading
+    assert description is not None
diff --git a/tests/web/largewebextension.xpi b/tests/web/largewebextension.xpi
new file mode 100644
index 0000000..824178c
Binary files /dev/null and b/tests/web/largewebextension.xpi differ
diff --git a/tests/webserver.py b/tests/webserver.py
index 2a72cfe..aa1b8af 100644
--- a/tests/webserver.py
+++ b/tests/webserver.py
@@ -51,6 +51,11 @@ def port(self):
         """
         return self.server.server_address[1]
 
+    @property
+    def url(self):
+        """Web server URL."""
+        return "http://{0.host}:{0.port}/".format(self)
+
     def start(self):
         """Start web server."""
         self.thread.start()
@@ -60,18 +65,6 @@ def stop(self):
         self.server.shutdown()
         self.thread.join()
 
-    def url(self, path="/"):
-        """Web server URL.
-
-        Args:
-            path (str, optional): Path to append to the web server URL.
-
-        Returns:
-            str: URL of web server.
-
-        """
-        return "http://{0.host}:{0.port}{1}".format(self, path)
-
     @classmethod
     def get_free_port(cls):
         """Find and return a free port on the system."""