薪水支付案例（3）

package salary;

import implement.database.PayrollDatabase;
import implement.entity.Employee;
import implement.transaction.AddSalariedEmployee;
import implement.transaction.DeleteEmployeeTransaction;
import junit.framework.TestCase;
import org.junit.Test;
import static org.junit.Assert.assertNull;
/**
* 删除雇员
* Created by ZD on 2017/10/24.
*/
public class DeleteEmployeeTransactionTest {
PayrollDatabase payrollDatabase = PayrollDatabase.getPayrollDatabase();

@Test
public void testDeleteEmployee(){
long id = 4;
String name = "Bob4";
String address = "Bob4.home";
double monthlyPay = 1000;
AddSalariedEmployee addSalariedEmployee = new AddSalariedEmployee(id,name,address,monthlyPay);
addSalariedEmployee.execute();
Employee e = payrollDatabase.getEmployeeById(id);
//assertEquals(e,addSalariedEmployee);
DeleteEmployeeTransaction deleteEmployeeTransaction = new DeleteEmployeeTransaction(id);
deleteEmployeeTransaction.execute();
assertNull(payrollDatabase.getEmployeeById(id));
}
}

package implement.transaction;

import implement.database.PayrollDatabase;
/**
* Created by ZD on 2017/10/24.
*/
public class DeleteEmployeeTransaction implements Transaction {
private long id;
public DeleteEmployeeTransaction(){}
public DeleteEmployeeTransaction(long id){
this.id = id;
}
public void execute() {
PayrollDatabase.getPayrollDatabase().deleteEmployeeById(id);
}
}