public void TestChangePassword()
{
MockUser tester = new MockUser();
tester.createMockUser();
tester.changePassword("123456789", 3);
string expected = "123456789";
List <User> result = tester.getUserByID(3);
string a = result.FirstOrDefault().Password;
Assert.AreEqual(expected, a, "Seharusnya sama");
}