@covers BankAccount::getBalance @covers BankAccount::depositMoney @covers BankAccount::withdrawMoney
public function testDepositWithdrawMoney() {
$this
->assertEquals(0, $this->ba
->getBalance());
$this->ba
->depositMoney(1);
$this
->assertEquals(1, $this->ba
->getBalance());
$this->ba
->withdrawMoney(1);
$this
->assertEquals(0, $this->ba
->getBalance());
}