change that tab open change url inplace and get active tab from window id

tests/test_api.py

@@ -154,6 +154,12 @@ class TestNavigation:
         b.focus_url("github.com")
         mock_send.assert_called_once_with("navigate.focus", {"pattern": "github.com"}, profile=None)
 
+    def test_navigate_tab(self, b, mock_send):
+        b.navigate_tab(5, "https://example.com")
+        mock_send.assert_called_once_with(
+            "navigate.to", {"tabId": 5, "url": "https://example.com"}, profile=None
+        )
+
     def test_profile_forwarded(self, b_profile, mock_send):
         b_profile.reload()
         mock_send.assert_called_once_with("navigate.reload", {"tabId": None}, profile="brave")
@@ -244,6 +250,18 @@ class TestTabs:
         b.tabs_active(10)
         mock_send.assert_called_once_with("tabs.active", {"tabId": 10}, profile=None)
 
+    def test_window_active_tab(self, b, mock_send):
+        mock_send.return_value = TAB_DATA
+        tab = b.window_active_tab(1)
+        assert isinstance(tab, Tab)
+        assert tab.id == 10
+        mock_send.assert_called_once_with("tabs.active_in_window", {"windowId": 1}, profile=None)
+
+    def test_window_active_tab_missing_raises(self, b, mock_send):
+        mock_send.return_value = None
+        with pytest.raises(RuntimeError, match="No active tab found for window 1"):
+            b.window_active_tab(1)
+
     def test_tabs_filter(self, b, mock_send):
         mock_send.return_value = [TAB_DATA]
         tabs = b.tabs_filter("example")
@@ -564,7 +582,15 @@ class TestTabModel:
     def test_open(self, tab, mock_send):
         tab.open("https://new.example.com")
         mock_send.assert_called_once_with(
-            "navigate.open", {"url": "https://new.example.com", "background": False}, profile=None
+            "navigate.to", {"tabId": 10, "url": "https://new.example.com"}, profile=None
+        )
+
+    def test_open_background_changes_same_tab(self, tab, mock_send):
+        tab.open("https://new.example.com", background=True)
+        mock_send.assert_called_once_with(
+            "navigate.to",
+            {"tabId": 10, "url": "https://new.example.com"},
+            profile=None,
         )
 
     def test_unbound_raises(self):