@Test
public void testGetGasCost() throws Exception {

    TestBlockchainConfig parent = new TestBlockchainConfig();
    Eip160HFConfig config = new Eip160HFConfig(parent);
    assertTrue(config.getGasCost() instanceof Eip160HFConfig.GasCostEip160HF);
    assertEquals(50, config.getGasCost().getEXP_BYTE_GAS());
}