feat(driver): add W3C actions helper and Driver.swipe_path

tests/test_android_driver.py

@@ -104,6 +104,7 @@ def test_connect_failure_raises_device_offline_and_clears_client() -> None:
         ("unlock", {}),
         ("disconnect", {}),
         ("long_press", {"x": 1, "y": 2}),
+        ("swipe_path", {"waypoints": [(0, 0), (1, 1)], "duration_ms": 100}),
     ],
 )
 def test_operation_before_connect_raises_device_offline(
@@ -229,6 +230,23 @@ def test_home_uses_presskey_with_home_keycode() -> None:
     )
 
 
+def test_swipe_path_sends_w3c_actions() -> None:
+    from driver._w3c_actions import build_swipe_actions
+
+    driver = _connected_driver()
+    waypoints = [(0, 0), (50, 5), (100, 0)]
+    driver.swipe_path(waypoints, 600)
+    args = driver._client.execute.call_args.args
+    assert args[1] == {"actions": build_swipe_actions(waypoints, 600)}
+
+
+def test_swipe_path_wraps_exception_into_driver_error() -> None:
+    driver = _connected_driver()
+    driver._client.execute.side_effect = RuntimeError("boom")
+    with pytest.raises(DriverError):
+        driver.swipe_path([(0, 0), (1, 1)], 100)
+
+
 def test_swipe_uses_drag_gesture_with_converted_speed() -> None:
     driver = _connected_driver()
     # 100px horizontal drag over 100ms => 100 / 0.1 = 1000 px/s