CheckingAccountTest.java

package com.luxoft.bankapp.model;

import com.luxoft.bankapp.model.exception.OverDraftLimitExceededException;
import org.junit.Before;
import org.junit.Test;

import static org.junit.Assert.*;

// test only CheckingAccount specific functionality
// do not test AbstractAccount functionality
public class CheckingAccountTest {
    private CheckingAccount sut;

    // if you need to create same object for all your tests
    // use @Before annotation for this purpose
    // this method will be executed before every test
    @Before
    public void createCheckingAccountWithBalance0AndOverdraft100() {
        sut = new CheckingAccount(0, 100);
    }

    @Test
    public void testSetOverdraftInConstructor() {
        sut = new CheckingAccount(0, 1.0f);

        assertEquals(1.0f, sut.getOverdraft(), 0);
    }

    @Test
    public void testSetBalanceAndOverdraftInConstructor() {
        sut = new CheckingAccount(1.0f, 2.0f);

        assertEquals(1.0f, sut.getBalance(), 0);
        assertEquals(2.0f, sut.getOverdraft(), 0);
    }

    @Test(expected = IllegalArgumentException.class)
    public void testNegativeOverdraftThrowException() {
        sut = new CheckingAccount(0, -1.0f);
    }

    @Test
    public void testWithdrawDecreaseBalance() {
        sut.deposit(10);
        sut.withdraw(5);

        assertEquals(5.0f, sut.getBalance(), 0.00001f);
    }

    @Test
    public void testWithdrawMoreThanBalanceDecreaseBalance() {
        sut.withdraw(5);

        assertEquals(-5.0f, sut.getBalance(), 0.00001f);
    }

    @Test(expected = OverDraftLimitExceededException.class)
    public void testWithdrawMoreThanBalancePlusOverdraftThrowsException() {
        sut = new CheckingAccount(0, 0);
        sut.withdraw(1.0f);
    }

}