def METHOD_NAME(self, db):
    data = db.get_unit_operation_parameters("nanofiltration")
    assert data == db._cached_files["nanofiltration"]["default"]
    # Check for a few expected keys to check what we got back looks right
    assert "removal_frac_mass_comp" in data
    assert "energy_electric_flow_vol_inlet" in data
    assert "recovery_frac_mass_H2O" in data