Add a test for using left-word to get home from the end of an input

tests/input/test_input_key_actions.py

@@ -135,4 +135,23 @@ async def test_input_right_word_to_the_end() -> None:
             assert hops == expected_hops[input.id]
 
 
+async def test_input_left_word_from_the_end() -> None:
+    """Using left-word to get home from the end should hop the correct number of times."""
+    async with InputTester().run_test() as pilot:
+        expected_hops: dict[str | None, int] = {
+            "empty": 0,
+            "single-word": 1,
+            "multi-no-punctuation": 6,
+            "multi-punctuation": 10,
+            "multi-and-hyphenated": 7,
+        }
+        for input in pilot.app.query(Input):
+            input.action_end()
+            hops = 0
+            while input.cursor_position:
+                input.action_cursor_left_word()
+                hops += 1
+            assert hops == expected_hops[input.id]
+
+
 # TODO: more tests.