Fix installer selectors for setupSuperUser UI variants

tests/integration/test_web_installer_locator_count.py

@@ -51,6 +51,26 @@ class _RoleLocator:
         return self._count_value > 0
 
 
+class _NameOnlyStaticLocator:
+    def __init__(self, page, selector: str):
+        self._page = page
+        self._selector = selector
+
+    def count(self) -> int:
+        if self._selector == "input[name='login']":
+            return 1 if self._page.login_visible else 0
+        if self._selector == "input[name='siteName']":
+            return 0
+        return 0
+
+    @property
+    def first(self):
+        return self
+
+    def is_visible(self) -> bool:
+        return self.count() > 0
+
+
 class _NoNextButLoginAppearsPage:
     def __init__(self):
         self.url = "http://matomo/index.php?action=setupSuperUser&module=Installation"
@@ -78,6 +98,33 @@ class _NoNextButLoginAppearsPage:
             self.login_visible = True
 
 
+class _NoNextButNamedLoginAppearsPage:
+    def __init__(self):
+        self.url = "http://matomo/index.php?action=setupSuperUser&module=Installation"
+        self.login_visible = False
+        self._wait_calls = 0
+
+    def locator(self, selector: str):
+        return _NameOnlyStaticLocator(self, selector)
+
+    def get_by_role(self, role: str, name: str):
+        return _RoleLocator(0)
+
+    def get_by_text(self, *_args, **_kwargs):
+        return _RoleLocator(0)
+
+    def title(self) -> str:
+        return "setupSuperUser"
+
+    def wait_for_load_state(self, *_args, **_kwargs):
+        return None
+
+    def wait_for_timeout(self, *_args, **_kwargs):
+        self._wait_calls += 1
+        if self._wait_calls >= 1:
+            self.login_visible = True
+
+
 class TestWebInstallerLocatorCountIntegration(unittest.TestCase):
     def test_retries_transient_navigation_error(self) -> None:
         locator = _FlakyLocator(
@@ -113,6 +160,14 @@ class TestWebInstallerLocatorCountIntegration(unittest.TestCase):
         self.assertEqual(step, "Installation:setupSuperUser")
         self.assertTrue(page.login_visible)
 
+    def test_click_next_wait_treats_named_login_form_as_progress(self) -> None:
+        page = _NoNextButNamedLoginAppearsPage()
+
+        step = _click_next_with_wait(page, timeout_s=1)
+
+        self.assertEqual(step, "Installation:setupSuperUser")
+        self.assertTrue(page.login_visible)
+
 
 if __name__ == "__main__":
     unittest.main()