@Test
public void equalsTest() throws Exception {

    assertEquals(new MigrationStub(1, 2), new MigrationStub(1, 2));
    assertNotEquals(new MigrationStub(1, 2), new MigrationStub(1, 3));
    assertNotEquals(new MigrationStub(1, 3), new MigrationStub(2, 3));
    assertNotEquals(new MigrationStub(1, 2), new MigrationStub(2, 3));
}