[py][bidi] Route navigation commands through BiDi

py/selenium/webdriver/remote/webdriver.py

@@ -48,6 +48,7 @@
 )
 from selenium.webdriver.common.bidi.browser import Browser
 from selenium.webdriver.common.bidi.browsing_context import BrowsingContext
+from selenium.webdriver.common.bidi.browsing_context import ReadinessState
 from selenium.webdriver.common.bidi.emulation import Emulation
 from selenium.webdriver.common.bidi.input import Input
 from selenium.webdriver.common.bidi.network import Network
@@ -509,7 +510,12 @@ def get(self, url: str) -> None:
         Example:
             `driver.get("https://example.com")`
         """
-        self.execute(Command.GET, {"url": url})
+        if self._is_bidi_enabled():
+            self.browsing_context.navigate(
+                context=self.current_window_handle, url=url, wait=self._page_load_readiness()
+            )
+        else:
+            self.execute(Command.GET, {"url": url})
 
     @property
     def title(self) -> str:
@@ -708,15 +714,46 @@ def switch_to(self) -> SwitchTo:
     # Navigation
     def back(self) -> None:
         """Goes one step backward in the browser history."""
-        self.execute(Command.GO_BACK)
+        if self._is_bidi_enabled():
+            self.browsing_context.traverse_history(context=self.current_window_handle, delta=-1)
+        else:
+            self.execute(Command.GO_BACK)
 
     def forward(self) -> None:
         """Goes one step forward in the browser history."""
-        self.execute(Command.GO_FORWARD)
+        if self._is_bidi_enabled():
+            self.browsing_context.traverse_history(context=self.current_window_handle, delta=1)
+        else:
+            self.execute(Command.GO_FORWARD)
 
     def refresh(self) -> None:
         """Refreshes the current page."""
-        self.execute(Command.REFRESH)
+        if self._is_bidi_enabled():
+            self.browsing_context.reload(context=self.current_window_handle, wait=self._page_load_readiness())
+        else:
+            self.execute(Command.REFRESH)
+
+    def _is_bidi_enabled(self) -> bool:
+        """Returns True if WebDriver BiDi is enabled for this session.
+
+        BiDi is enabled when the remote end advertised a ``webSocketUrl`` URL
+        string in the session capabilities. A remote end may echo the requested
+        capability back as a boolean, so only a string value (the actual socket
+        URL) counts as enabled; otherwise navigation falls back to Classic.
+        """
+        return isinstance(self.caps.get("webSocketUrl"), str)
+
+    def _page_load_readiness(self) -> ReadinessState:
+        """Maps the session's ``pageLoadStrategy`` capability to a BiDi readiness state.
+
+        ``normal`` -> COMPLETE, ``eager`` -> INTERACTIVE, ``none`` -> NONE.
+        Defaults to COMPLETE to match Classic ``get()`` blocking semantics.
+        """
+        return {
+            "normal": ReadinessState.COMPLETE,
+            "eager": ReadinessState.INTERACTIVE,
+            "none": ReadinessState.NONE,
+        }.get(self.caps.get("pageLoadStrategy", "normal"), ReadinessState.COMPLETE)
 
     def get_cookies(self) -> list[dict]:
         """Get all cookies visible to the current WebDriver instance.

py/test/selenium/webdriver/common/bidi_navigation_tests.py

@@ -0,0 +1,68 @@
+# 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.
+
+"""Tests that the classic navigation commands are routed through WebDriver BiDi.
+
+These run under the ``--bidi`` pytest flag, which sets ``web_socket_url = True``
+on the options. With BiDi enabled, ``driver.get()``, ``back()``, ``forward()``
+and ``refresh()`` are expected to go through the BiDi ``browsingContext`` module
+instead of the Classic HTTP endpoints, while preserving the same behaviour.
+"""
+
+from selenium.webdriver.common.bidi.browsing_context import ReadinessState
+
+
+def test_bidi_is_enabled(driver):
+    """The driver should report BiDi as enabled when web_socket_url is set."""
+    assert driver._is_bidi_enabled() is True
+
+
+def test_get_navigates_via_bidi(driver, pages):
+    """driver.get() should load the page through BiDi and block until complete."""
+    url = pages.url("simpleTest.html")
+    driver.get(url)
+    assert driver.current_url == url
+    assert "Hello WebDriver" in driver.title
+
+
+def test_back_and_forward_via_bidi(driver, pages):
+    """back()/forward() should traverse history through BiDi."""
+    first = pages.url("simpleTest.html")
+    second = pages.url("formPage.html")
+
+    driver.get(first)
+    driver.get(second)
+    assert driver.current_url == second
+
+    driver.back()
+    assert driver.current_url == first
+
+    driver.forward()
+    assert driver.current_url == second
+
+
+def test_refresh_via_bidi(driver, pages):
+    """refresh() should reload the current context through BiDi."""
+    url = pages.url("formPage.html")
+    driver.get(url)
+    driver.refresh()
+    assert driver.current_url == url
+
+
+def test_page_load_readiness_default_is_complete(driver):
+    """With no explicit pageLoadStrategy, readiness should default to COMPLETE."""
+    assert driver._page_load_readiness() == ReadinessState.COMPLETE