test: Use real mouse events with Chromium in the shell

BiDi mouse events work fine on the top-level document (i.e. not in
frames). So let's use them to test the shell.

Generalize the "move mouse position to a harmless place" hack from
commit b5b8c6d, so that we make the pixel snapshots without
focusing a random element on the page.

We can also run `TestPages.testPageStatus` again (reverts commit
529e334).

This just needs one little tweak in TestHostSwitching.testBasic's pixel
test. Our current reference does not expect any dialog item to be
highlighted (when the mouse is over it), so move the mouse out of the
dialog.

test/common/testlib.py

@@ -526,11 +526,11 @@ def mouse(
         # HACK: Chromium clicks don't work with iframes; use our old "synthesize MouseEvent" approach
         # https://issues.chromium.org/issues/359616812
         # TODO: x and y are not currently implemented: webdriver (0, 0) is the element's center, not top left corner
-        if self.browser == "chromium" or x != 0 or y != 0:
+        if (self.browser == "chromium" and not self.driver.in_top_context()) or x != 0 or y != 0:
             self.call_js_func('ph_mouse', selector, event, x, y, btn, ctrlKey, shiftKey, altKey, metaKey)
             return
 
-        # For Firefox and regular clicks, use the BiDi API, which is more realistic -- it doesn't
+        # For Firefox and top frame with Chromium, use the BiDi API, which is more realistic -- it doesn't
         # sidestep the browser
         element = self.call_js_func('ph_find_scroll_into_view' if scrollVisible else 'ph_find', selector)
 
@@ -1479,6 +1479,14 @@ def assert_pixels(
             if "pf-v5-c-page__main" in classes:
                 self.set_attr("main.pf-v5-c-page__main", "class", f"{classes} pixel-test")
 
+        # move the mouse to a harmless place where it doesn't accidentally focus anything (as that changes UI)
+        self.bidi("input.performActions", context=self.driver.context, actions=[{
+            "id": "move-away",
+            "type": "pointer",
+            "parameters": {"pointerType": "mouse"},
+            "actions": [{"type": "pointerMove", "x": 2000, "y": 0, "origin": "viewport"}]
+        }])
+
         if self.current_layout:
             previous_layout = self.current_layout["name"]
             for layout in self.layouts:

test/common/webdriver_bidi.py

@@ -326,6 +326,9 @@ def switch_to_top(self) -> None:
         self.context = self.top_context
         log_command.info("← switch_to_top")
 
+    def in_top_context(self) -> bool:
+        return self.context == self.top_context
+
     @contextlib.contextmanager
     def restore_context(self) -> Iterator[None]:
         saved = self.context

test/verify/check-pages

@@ -752,7 +752,6 @@ OnCalendar=daily
         with b.wait_timeout(60):
             b.wait_js_func("ph_plot_data_plateau", "pmcd", mem_avail * 0.85, mem_avail * 1.15, 15, "mem")
 
-    @testlib.skipBrowser("Headless chromium is missing the synthetic mouseenter", "chromium")
     def testPageStatus(self):
         b = self.browser
 

test/verify/check-shell-host-switching

@@ -198,14 +198,6 @@ class TestHostSwitching(testlib.MachineCase, HostSwitcherHelpers):
         b.wait_not_present("#nav-system.interact")
         b.set_layout("desktop")
 
-        # this looks different (focused) when the mouse is inside (default 0,0 possition), so move it away
-        # chromium is stubborn here, we *have* to move the real mouse, not just do this with synthetic MouseEvents
-        b.bidi("input.performActions", context=b.driver.context, actions=[{
-            "id": "move-away",
-            "type": "pointer",
-            "parameters": {"pointerType": "mouse"},
-            "actions": [{"type": "pointerMove", "x": 200, "y": 200, "origin": "viewport"}]
-        }])
         b.assert_pixels("#hosts-sel", "hosts-sel-closed")
 
         self.open_host_switcher()
@@ -237,6 +229,8 @@ class TestHostSwitching(testlib.MachineCase, HostSwitcherHelpers):
         b.wait_in_text('#hosts_setup_server_dialog', "Unable to contact the given host 10.111.113.2:4321. Make sure it has ssh running on port 4321, or specify another port in the address.")
         # Now do it right
         b.set_input_text('#add-machine-address', "10.111.113.2")
+        # move the mouse away to avoid highlighting any UI element (pixel ref does not expect that)
+        b.mouse("#hosts-sel", "mouseenter")
         b.assert_pixels("#hosts_setup_server_dialog", "host-add-dialog")
         b.click('#hosts_setup_server_dialog .pf-m-primary:contains("Add")')
         b.wait_in_text('#hosts_setup_server_dialog', "You are connecting to 10.111.113.2 for the first time")