code: /*
   * Copyright (c) 2022 Airbyte, Inc., all rights reserved.
   */
  
  package io.airbyte.integrations.destination.dest_state_lifecycle_manager;
  
  import static org.junit.jupiter.api.Assertions.assertThrows;
  import static org.mockito.Mockito.mock;
  import static org.mockito.Mockito.verify;
  
  import io.airbyte.protocol.models.AirbyteMessage;
  import io.airbyte.protocol.models.AirbyteMessage.Type;
  import io.airbyte.protocol.models.AirbyteStateMessage;
  import io.airbyte.protocol.models.AirbyteStateMessage.AirbyteStateType;
  import io.airbyte.protocol.models.AirbyteStreamState;
  import io.airbyte.protocol.models.StreamDescriptor;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  
  class DefaultDestStateLifecycleManagerTest {
  
    private static final AirbyteMessage UNSET_TYPE_MESSAGE = new AirbyteMessage()
        .withType(Type.STATE)
        .withState(new AirbyteStateMessage());
    private static final AirbyteMessage LEGACY_MESSAGE = new AirbyteMessage()
        .withType(Type.STATE)
        .withState(new AirbyteStateMessage().withType(AirbyteStateType.LEGACY));
    private static final AirbyteMessage GLOBAL_MESSAGE = new AirbyteMessage()
        .withType(Type.STATE)
        .withState(new AirbyteStateMessage().withType(AirbyteStateType.GLOBAL));
    private static final AirbyteMessage STREAM_MESSAGE = new AirbyteMessage()
        .withType(Type.STATE)
        .withState(new AirbyteStateMessage()
            .withType(AirbyteStateType.STREAM)
            .withStream(new AirbyteStreamState().withStreamDescriptor(new StreamDescriptor().withName("users"))));
  
    private DestStateLifecycleManager mgr1;
    private DestStateLifecycleManager singleStateMgr;
    private DestStateLifecycleManager streamMgr;
  
    @BeforeEach
    void setup() {
      singleStateMgr = mock(DestStateLifecycleManager.class);
      streamMgr = mock(DestStateLifecycleManager.class);
      mgr1 = new DefaultDestStateLifecycleManager(singleStateMgr, streamMgr);
    }
  
    @Test
    void testFailsOnIncompatibleStates() {
      final DefaultDestStateLifecycleManager manager1 = new DefaultDestStateLifecycleManager(singleStateMgr, streamMgr);
      manager1.addState(UNSET_TYPE_MESSAGE);
      manager1.addState(UNSET_TYPE_MESSAGE);
      manager1.addState(LEGACY_MESSAGE);
      assertThrows(IllegalArgumentException.class, () -> manager1.addState(GLOBAL_MESSAGE));
      assertThrows(IllegalArgumentException.class, () -> manager1.addState(STREAM_MESSAGE));
  
      final DefaultDestStateLifecycleManager manager2 = new DefaultDestStateLifecycleManager(singleStateMgr, streamMgr);
      manager2.addState(LEGACY_MESSAGE);
      manager2.addState(LEGACY_MESSAGE);
      manager2.addState(UNSET_TYPE_MESSAGE);
      assertThrows(IllegalArgumentException.class, () -> manager2.addState(GLOBAL_MESSAGE));
      assertThrows(IllegalArgumentException.class, () -> manager2.addState(STREAM_MESSAGE));
  
      final DefaultDestStateLifecycleManager manager3 = new DefaultDestStateLifecycleManager(singleStateMgr, streamMgr);
      manager3.addState(GLOBAL_MESSAGE);
      manager3.addState(GLOBAL_MESSAGE);
      assertThrows(IllegalArgumentException.class, () -> manager3.addState(UNSET_TYPE_MESSAGE));
      assertThrows(IllegalArgumentException.class, () -> manager3.addState(LEGACY_MESSAGE));
      assertThrows(IllegalArgumentException.class, () -> manager3.addState(STREAM_MESSAGE));
  
      final DefaultDestStateLifecycleManager manager4 = new DefaultDestStateLifecycleManager(singleStateMgr, streamMgr);
      manager4.addState(STREAM_MESSAGE);
      manager4.addState(STREAM_MESSAGE);
      assertThrows(IllegalArgumentException.class, () -> manager4.addState(UNSET_TYPE_MESSAGE));
      assertThrows(IllegalArgumentException.class, () -> manager4.addState(LEGACY_MESSAGE));
      assertThrows(IllegalArgumentException.class, () -> manager4.addState(GLOBAL_MESSAGE));
    }
  
    @Test
    void testDelegatesLegacyMessages() {
      mgr1.addState(UNSET_TYPE_MESSAGE);
      mgr1.addState(LEGACY_MESSAGE);
      mgr1.markPendingAsFlushed();
      mgr1.markFlushedAsCommitted();
      mgr1.listFlushed();
      mgr1.listCommitted();
      verify(singleStateMgr).addState(UNSET_TYPE_MESSAGE);
      verify(singleStateMgr).addState(LEGACY_MESSAGE);
      verify(singleStateMgr).markPendingAsFlushed();
      verify(singleStateMgr).markFlushedAsCommitted();
      verify(singleStateMgr).listFlushed();
      verify(singleStateMgr).listCommitted();
    }
  
    @Test
    void testDelegatesGlobalMessages() {
      mgr1.addState(GLOBAL_MESSAGE);
      mgr1.markPendingAsFlushed();
      mgr1.markFlushedAsCommitted();
      mgr1.listFlushed();
      mgr1.listCommitted();
      verify(singleStateMgr).addState(GLOBAL_MESSAGE);
      verify(singleStateMgr).markPendingAsFlushed();
      verify(singleStateMgr).markFlushedAsCommitted();
      verify(singleStateMgr).listFlushed();
      verify(singleStateMgr).listCommitted();
    }
  
    @Test
    void testDelegatesStreamMessages() {
      mgr1.addState(STREAM_MESSAGE);
      mgr1.markPendingAsFlushed();
      mgr1.markFlushedAsCommitted();
      mgr1.listFlushed();
      mgr1.listCommitted();
  
      verify(streamMgr).addState(STREAM_MESSAGE);
      verify(streamMgr).markPendingAsFlushed();
      verify(streamMgr).markFlushedAsCommitted();
      verify(streamMgr).listFlushed();
      verify(streamMgr).listCommitted();
    }
  
  }
  