BankAccountCompTest.java

import static org.junit.Assert.*;

import org.junit.Test;

import junit.framework.Assert;

public class BankAccountCompTest {
	
	@Test
	public void depositTest() {
		BankAccountComp bank = new BankAccountComp();
		
		// Insert 500
		bank.deposit(500);
		double newBal = bank.getBalance();
		Assert.assertEquals(500, newBal, 0.01);
		
		// Insert 312.8 more
		bank.deposit(312.8);
		newBal = bank.getBalance();
		Assert.assertEquals(812.8, newBal, 0.01);
	}
	
	@Test
	public void withdrawTest() {
		// Start the bank with 500
		BankAccountComp bank = new BankAccountComp(500);
		
		// Withdraw 200
		bank.withdraw(200);
		double newBal = bank.getBalance();
		Assert.assertEquals(300, newBal, 0.01);
		
		// Withdraw 52.6 more
		bank.withdraw(52.6);
		newBal = bank.getBalance();
		Assert.assertEquals(247.4, newBal, 0.01);
	}
	
	@Test
	public void accrueTest () {
		// Start the bank with 500
		BankAccountComp bank = new BankAccountComp(500);
		
		// Accrue for 1 year at 6%: 500 * 1.06 = 530
		bank.accrue();
		double newBal = bank.getBalance();
		Assert.assertEquals(530, newBal, 0.01);
		
		// Accrue for another year at 6%: 530 * 1.06 = 561.8
		bank.accrue();
		newBal = bank.getBalance();
		Assert.assertEquals(561.8, newBal, 0.01);
	}
	
	@Test
	public void accrueYearsTest () {
		// Start the bank with 500
		BankAccountComp bank = new BankAccountComp(500);
		
		// Accrue for 2 years at 6%: 500 -> 561.8
		bank.accrueYears(2);
		double newBal = bank.getBalance();
		Assert.assertEquals(561.8, newBal, 0.01);
		
		// Accrue for 10 years at 6%: 561.8 -> 1006.1
		bank.accrueYears(10);
		newBal = bank.getBalance();
		Assert.assertEquals(1006.1, newBal, 0.01);
	}
	
	@Test
	public void ageTest () {
		BankAccountComp bank = new BankAccountComp();
		
		// Should start at 0 years
		int age = bank.getAccountAge();
		Assert.assertEquals(0, age);
		
		// Fast forward 10 years
		bank.accrueYears(10);
		age = bank.getAccountAge();
		Assert.assertEquals(10, age);
		
		// Fast forward another 60 years: 10 + 60 = 70
		bank.accrueYears(60);
		age = bank.getAccountAge();
		Assert.assertEquals(70, age);
	}
}