@Before
public void setup(){
        this.bank = EasyMock.createMock(Bank.class);

        EasyMock.expect(this.bank.deduction("succeed")).andReturn(true);
        EasyMock.expect(this.bank.deduction("fail")).andReturn(false);

@Test
    public void deductionSucceeds() {
        EasyMock.replay(this.captcha);

        Mufasa mufasa = new Mufasa();
        mufasa.setBank(this.bank);

        assertTrue("Deduction should've succeeded", mufasa.deduction("succeed") );
}

public boolean deduction(String request) {
        if (this.bank.deduction(request)) {
            return true;
        }
        else {
            return false;
        }
}