@Test public void testSerializeReconfiguredEnumSerializer() throws Exception { // mock the previous ordering of enum constants to be BAR, PAULA, NATHANIEL PublicEnum[] mockPreviousOrder = {PublicEnum.BAR, PublicEnum.PAULA, PublicEnum.NATHANIEL}; // now, the actual order of FOO, BAR, PETER, NATHANIEL, EMMA, PAULA will be the "new wrong order" EnumSerializer<PublicEnum> serializer = new EnumSerializer<>(PublicEnum.class); // verify that the serializer is first using the "wrong order" (i.e., the initial new configuration) assertEquals(PublicEnum.FOO.ordinal(), serializer.getValueToOrdinal().get(PublicEnum.FOO).intValue()); assertEquals(PublicEnum.BAR.ordinal(), serializer.getValueToOrdinal().get(PublicEnum.BAR).intValue()); assertEquals(PublicEnum.PETER.ordinal(), serializer.getValueToOrdinal().get(PublicEnum.PETER).intValue()); assertEquals(PublicEnum.NATHANIEL.ordinal(), serializer.getValueToOrdinal().get(PublicEnum.NATHANIEL).intValue()); assertEquals(PublicEnum.EMMA.ordinal(), serializer.getValueToOrdinal().get(PublicEnum.EMMA).intValue()); assertEquals(PublicEnum.PAULA.ordinal(), serializer.getValueToOrdinal().get(PublicEnum.PAULA).intValue()); // reconfigure and verify compatibility CompatibilityResult<PublicEnum> compatResult = serializer.ensureCompatibility( new EnumSerializer.EnumSerializerConfigSnapshot<>(PublicEnum.class, mockPreviousOrder)); assertFalse(compatResult.isRequiresMigration()); // serialize and deserialize again the serializer byte[] serializedSerializer = InstantiationUtil.serializeObject(serializer); serializer = InstantiationUtil.deserializeObject(serializedSerializer, Thread.currentThread().getContextClassLoader()); // verify that after the serializer was read, the reconfigured constant ordering is untouched PublicEnum[] expectedOrder = {PublicEnum.BAR, PublicEnum.PAULA, PublicEnum.NATHANIEL, PublicEnum.FOO, PublicEnum.PETER, PublicEnum.EMMA}; int i = 0; for (PublicEnum constant : expectedOrder) { assertEquals(i, serializer.getValueToOrdinal().get(constant).intValue()); i++; } assertTrue(Arrays.equals(expectedOrder, serializer.getValues())); }
@Test public void testReconfiguration() { // mock the previous ordering of enum constants to be BAR, PAULA, NATHANIEL PublicEnum[] mockPreviousOrder = {PublicEnum.BAR, PublicEnum.PAULA, PublicEnum.NATHANIEL}; // now, the actual order of FOO, BAR, PETER, NATHANIEL, EMMA, PAULA will be the "new wrong order" EnumSerializer<PublicEnum> serializer = new EnumSerializer<>(PublicEnum.class); // verify that the serializer is first using the "wrong order" (i.e., the initial new configuration) assertEquals(PublicEnum.FOO.ordinal(), serializer.getValueToOrdinal().get(PublicEnum.FOO).intValue()); assertEquals(PublicEnum.BAR.ordinal(), serializer.getValueToOrdinal().get(PublicEnum.BAR).intValue()); assertEquals(PublicEnum.PETER.ordinal(), serializer.getValueToOrdinal().get(PublicEnum.PETER).intValue()); assertEquals(PublicEnum.NATHANIEL.ordinal(), serializer.getValueToOrdinal().get(PublicEnum.NATHANIEL).intValue()); assertEquals(PublicEnum.EMMA.ordinal(), serializer.getValueToOrdinal().get(PublicEnum.EMMA).intValue()); assertEquals(PublicEnum.PAULA.ordinal(), serializer.getValueToOrdinal().get(PublicEnum.PAULA).intValue()); // reconfigure and verify compatibility CompatibilityResult<PublicEnum> compatResult = serializer.ensureCompatibility( new EnumSerializer.EnumSerializerConfigSnapshot<>(PublicEnum.class, mockPreviousOrder)); assertFalse(compatResult.isRequiresMigration()); // after reconfiguration, the order should be first the original BAR, PAULA, NATHANIEL, // followed by the "new enum constants" FOO, PETER, EMMA PublicEnum[] expectedOrder = {PublicEnum.BAR, PublicEnum.PAULA, PublicEnum.NATHANIEL, PublicEnum.FOO, PublicEnum.PETER, PublicEnum.EMMA}; int i = 0; for (PublicEnum constant : expectedOrder) { assertEquals(i, serializer.getValueToOrdinal().get(constant).intValue()); i++; } assertTrue(Arrays.equals(expectedOrder, serializer.getValues())); }