public void test_equalsHashCode() { EtdContractSpecId a = EtdContractSpecId.of(StandardId.of("A", "B")); EtdContractSpecId a2 = EtdContractSpecId.of(StandardId.of("A", "B")); EtdContractSpecId b = EtdContractSpecId.of(StandardId.of("C", "D")); assertEquals(a.hashCode(), a2.hashCode()); assertEquals(a.equals(a), true); assertEquals(a.equals(a2), true); assertEquals(a.equals(b), false); assertEquals(a.equals(null), false); assertEquals(a.equals(ANOTHER_TYPE), false); }