code: /*
   * Copyright (c) 2022 Airbyte, Inc., all rights reserved.
   */
  
  package io.airbyte.container_orchestrator;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertThrows;
  import static org.mockito.Mockito.*;
  import static org.mockito.Mockito.when;
  
  import io.airbyte.workers.general.DocumentStoreClient;
  import io.airbyte.workers.process.AsyncKubePodStatus;
  import io.airbyte.workers.process.KubePodInfo;
  import java.util.Optional;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  
  class DefaultAsyncStateManagerTest {
  
    private static final KubePodInfo KUBE_POD_INFO = new KubePodInfo("default", "pod1");
    private static final String OUTPUT = "some output value";
  
    private DocumentStoreClient documentStore;
    private AsyncStateManager stateManager;
  
    @BeforeEach
    void setup() {
      documentStore = mock(DocumentStoreClient.class);
      stateManager = new DefaultAsyncStateManager(documentStore);
    }
  
    @Test
    void testEmptyWrite() {
      stateManager.write(KUBE_POD_INFO, AsyncKubePodStatus.INITIALIZING);
  
      // test for overwrite (which should be allowed)
      stateManager.write(KUBE_POD_INFO, AsyncKubePodStatus.INITIALIZING);
  
      final var key = getKey(AsyncKubePodStatus.INITIALIZING);
      verify(documentStore, times(2)).write(key, "");
    }
  
    @Test
    void testContentfulWrite() {
      stateManager.write(KUBE_POD_INFO, AsyncKubePodStatus.SUCCEEDED, OUTPUT);
  
      final var key = getKey(AsyncKubePodStatus.SUCCEEDED);
      verify(documentStore, times(1)).write(key, OUTPUT);
    }
  
    @Test
    void testReadingOutputWhenItExists() {
      final var key = getKey(AsyncKubePodStatus.SUCCEEDED);
      when(documentStore.read(key)).thenReturn(Optional.of(OUTPUT));
      assertEquals(OUTPUT, stateManager.getOutput(KUBE_POD_INFO));
    }
  
    @Test
    void testReadingOutputWhenItDoesNotExist() {
      // getting the output should throw an exception when there is no record in the document store
      assertThrows(IllegalArgumentException.class, () -> {
        stateManager.getOutput(KUBE_POD_INFO);
      });
    }
  
    @Test
    void testSuccessfulStatusRetrievalLifecycle() {
      when(documentStore.read(getKey(AsyncKubePodStatus.INITIALIZING))).thenReturn(Optional.empty());
      final var beforeInitializingStatus = stateManager.getStatus(KUBE_POD_INFO);
      assertEquals(AsyncKubePodStatus.NOT_STARTED, beforeInitializingStatus);
  
      when(documentStore.read(getKey(AsyncKubePodStatus.INITIALIZING))).thenReturn(Optional.of(""));
      final var initializingStatus = stateManager.getStatus(KUBE_POD_INFO);
      assertEquals(AsyncKubePodStatus.INITIALIZING, initializingStatus);
  
      when(documentStore.read(getKey(AsyncKubePodStatus.RUNNING))).thenReturn(Optional.of(""));
      final var runningStatus = stateManager.getStatus(KUBE_POD_INFO);
      assertEquals(AsyncKubePodStatus.RUNNING, runningStatus);
  
      when(documentStore.read(getKey(AsyncKubePodStatus.SUCCEEDED))).thenReturn(Optional.of("output"));
      final var succeededStatus = stateManager.getStatus(KUBE_POD_INFO);
      assertEquals(AsyncKubePodStatus.SUCCEEDED, succeededStatus);
    }
  
    @Test
    void testFailureStatusRetrievalLifecycle() {
      when(documentStore.read(getKey(AsyncKubePodStatus.INITIALIZING))).thenReturn(Optional.empty());
      final var beforeInitializingStatus = stateManager.getStatus(KUBE_POD_INFO);
      assertEquals(AsyncKubePodStatus.NOT_STARTED, beforeInitializingStatus);
  
      when(documentStore.read(getKey(AsyncKubePodStatus.INITIALIZING))).thenReturn(Optional.of(""));
      final var initializingStatus = stateManager.getStatus(KUBE_POD_INFO);
      assertEquals(AsyncKubePodStatus.INITIALIZING, initializingStatus);
  
      when(documentStore.read(getKey(AsyncKubePodStatus.RUNNING))).thenReturn(Optional.of(""));
      final var runningStatus = stateManager.getStatus(KUBE_POD_INFO);
      assertEquals(AsyncKubePodStatus.RUNNING, runningStatus);
  
      when(documentStore.read(getKey(AsyncKubePodStatus.FAILED))).thenReturn(Optional.of("output"));
      final var failedStatus = stateManager.getStatus(KUBE_POD_INFO);
      assertEquals(AsyncKubePodStatus.FAILED, failedStatus);
    }
  
    private static String getKey(final AsyncKubePodStatus status) {
      return DefaultAsyncStateManager.getDocumentStoreKey(KUBE_POD_INFO, status);
    }
  
  }
  