test: improve temporary context handling tests

- Add test_temp_session_outside_context to test handling of manually killed sessions
- Add test_temp_window_outside_context to verify cleanup behavior for windows
- Improve comments and assertions for better test clarity
- Fix formatting and line length issues

test: remove mocked session test in favor of real implementation

Author: tony

tests/test/test_temporary.py

@@ -94,3 +94,43 @@ def test_temp_window_cleanup_on_exception(session: Session) -> None:
     assert len(session.windows) == initial_windows
     assert window_id is not None
     assert not any(w.window_id == window_id for w in session.windows)
+
+
+def test_temp_session_outside_context(server: Server) -> None:
+    """Test that temp_session's finally block handles a session already killed."""
+    session_name = None
+
+    with temp_session(server) as session:
+        session_name = session.session_name
+        assert session_name is not None
+        assert server.has_session(session_name)
+
+        # Kill the session while inside the context
+        session.kill()
+        assert not server.has_session(session_name)
+
+    # The temp_session's finally block should handle gracefully
+    # that the session is already gone
+    assert session_name is not None
+    assert not server.has_session(session_name)
+
+
+def test_temp_window_outside_context(session: Session) -> None:
+    """Test that temp_window's finally block handles a window already killed."""
+    initial_windows = len(session.windows)
+    window_id = None
+
+    with temp_window(session) as window:
+        window_id = window.window_id
+        assert window_id is not None
+        assert len(session.windows) == initial_windows + 1
+
+        # Kill the window inside the context
+        window.kill()
+        assert len(session.windows) == initial_windows
+
+    # The temp_window's finally block should handle gracefully
+    # that the window is already gone
+    assert window_id is not None
+    assert len(session.windows) == initial_windows
+    assert not any(w.window_id == window_id for w in session.windows)