How to use the pipx.constants function in pipx

def test_existing_symlink_points_to_nothing(pipx_temp_env, caplog, capsys):
    constants.LOCAL_BIN_DIR.mkdir(exist_ok=True, parents=True)
    (constants.LOCAL_BIN_DIR / "pycowsay").symlink_to("/asdf/jkl")
    assert not run_pipx_cli(["install", "pycowsay"])
    captured = capsys.readouterr()
    # pipx should realize the symlink points to nothing and replace it,
    # so no warning should be present
    assert "symlink missing or pointing to unexpected location" not in captured.out