如果测试与其他测试一起运行，Micronaut 无法在集成测试中加载 bean

Question

我有一个使用 SQLite 的 Micronaut 应用程序，我使用 groovy 和 Spock 为应用程序创建了集成测试。如果规范独立运行，一切正常，当所有测试同时运行时，有时使用 CrudRepository 的测试之一会失败并出现错误：

Error instantiating bean of type [io.micronaut.http.server.codec.TextStreamCodec]

Message:
Bean of type [class io.micronaut.context.DefaultApplicationContext$RuntimeConfiguredEnvironment]
is a manually registered singleton that was registered with the context via
BeanContext.registerBean(..) and cannot be created directly

Path Taken:
new DefaultJdbcRepositoryOperations(String dataSourceName,DataJdbcConfiguration jdbcConfiguration,DataSource dataSource,TransactionOperations transactionOperations,ExecutorService executorService,BeanContext beanContext,List codecs,DateTimeProvider dateTimeProvider,RuntimeEntityRegistry entityRegistry,DataConversionService conversionService,AttributeConverterRegistry attributeConverterRegistry,SchemaTenantResolver schemaTenantResolver,JdbcSchemaHandler schemaHandler)
--> new DefaultJdbcRepositoryOperations(String dataSourceName,DataJdbcConfiguration jdbcConfiguration,DataSource dataSource,TransactionOperations transactionOperations,ExecutorService executorService,BeanContext beanContext,[List codecs],DateTimeProvider dateTimeProvider,RuntimeEntityRegistry entityRegistry,DataConversionService conversionService,AttributeConverterRegistry attributeConverterRegistry,SchemaTenantResolver schemaTenantResolver,JdbcSchemaHandler schemaHandler)
--> new TextStreamCodec(ApplicationConfiguration applicationConfiguration,[ByteBufferFactory byteBufferFactory],BeanProvider codecRegistryProvider,CodecConfiguration codecConfiguration)

这是我所有规范的基类：

abstract class BaseSpec extends Specification {
  @Shared
  @Inject
  protected EmbeddedServer embeddedServer

  @AutoCleanup
  @Shared
  protected ApplicationContext applicationContext

  @AutoCleanup("shutdown")
  @Shared
  protected WireMockServer wireMockServer

  @SuppressWarnings("unused")
  void setupSpec() {
    //Thread.sleep(500)
    preSetupSpec()
    cleanDatabase()
    WireMock.configureFor("localhost", 8090)
    wireMockServer = new WireMockServer(options().port(8090))
    wireMockServer.start()
    Unirest.setHttpClient(HttpClientBuilder.create()
        .setConnectionManager(new BasicHttpClientConnectionManager())
        .build())
    Unirest.setObjectMapper(new com.mashape.unirest.http.ObjectMapper() {
      private ObjectMapper objectMapper = new ObjectMapper();

      @Override
      <T> T readValue(String value, Class<T> valueType) {
        return objectMapper.readValue(value, valueType)
      }

      @Override
      String writeValue(Object value) {
        return objectMapper.writeValueAsString(value);
      }
    })
    embeddedServer = ApplicationContext.run(EmbeddedServer, "integration")
    applicationContext = embeddedServer.applicationContext
    ApplicationSettings.BASE_URL = embeddedServer.URL.toString()
    ApplicationSettings.PORT = embeddedServer.URL.getPort()
    postSetupSpec()
  }

  protected void preSetupSpec() {}

  protected void postSetupSpec() {}

  private static void cleanDatabase() {
    def parent = System.getProperty("user.dir")
    new File(parent, "build/tmp/colleague-identity-distributed.db").delete()
  }

  @SuppressWarnings("unused")
  void cleanupSpec() {
    wireMockServer.stop()
  }

  void setup() {
    if (!wireMockServer.isRunning()) {
      wireMockServer.start()
    }
    wireMockServer.resetAll()
  }

  @SuppressWarnings("unused")
  void stubEndpoint(StubMapping stubMapping) {
    wireMockServer.addStubMapping(stubMapping)
  }
}

并非总是相同的方法会失败，有趣的是，如果我只注释掉其中一个数据库测试（甚至不是失败的那个），一切都会恢复正常，似乎我超出了某种阈值。此外，在 setupSpec 的开头添加 Thread.sleep 可以解决问题。