@Test
public void getWithDrawGasPrice(){

    WithDrawBalance mWithDrawBalance = new WithDrawBalance();
    mWithDrawBalance.setGasLimit("1000");
    mWithDrawBalance.setGasPrice("200");
    presenter.setmWithDrawBalance(mWithDrawBalance);
    presenter.getWithDrawGasPrice("20");
    Mockito.verify(view).showWithDrawGasPrice(Mockito.anyString());
}