A unit test for a toy bank account model

AccountTest.java

import org.junit.jupiter.api.Test;

import static org.junit.jupiter.api.Assertions.*;

class AccountTest {

    @Test
    public void testTransactions() throws Account.InsufficientFundsException {
        final Account account = new Account();
        account.deposit(100);
        assertEquals(100, account.balance());
        account.withdraw(60);
        assertEquals(40, account.balance());
    }

    @Test
    public void testFailedTransaction() {
        final Account account = new Account();
        account.deposit(100);
        assertEquals(100, account.balance());
        assertThrows(Account.InsufficientFundsException.class, () -> account.withdraw(101));
    }

    @Test
    public void testTransfer() throws Account.InsufficientFundsException {
        final Account account1 = new Account();
        final Account account2 = new Account();
        account1.deposit(100);
        account1.transferTo(100, account2);
        assertEquals(100, account2.balance());
        assertEquals(0, account1.balance());
    }

    @Test
    public void testFailedTransfer() {
        final Account account1 = new Account();
        final Account account2 = new Account();
        account1.deposit(100);
        assertThrows(Account.InsufficientFundsException.class, () -> account1.transferTo(101, account2));
        assertEquals(0, account2.balance());
        assertEquals(100, account1.balance());
    }

}