The elasticsearch build makes use of the [task avoidance API](https://docs.gradle.org/current/userguide/task_configuration_avoidance.html) to keep the configuration time of the build low.

When declaring tasks (in build scripts or custom plugins) this means that we want to _register_ a task like:

    tasks.register('someTask') { ... }

instead of eagerly _creating_ the task:

    task someTask { ... }

  }

  @Test fun taskFailsWithUncheckedException() {
    queue.schedule("task", TimeUnit.MILLISECONDS.toNanos(100)) {
      log.put("failing task running")
      throw RuntimeException("boom!")
    }

    queue.schedule("task", TimeUnit.MILLISECONDS.toNanos(200)) {
      log.put("normal task running")
      return@schedule -1L
    }

    queue.idleLatch().await(500, TimeUnit.MILLISECONDS)

# o schema   -- The schema name.
# o user     -- The database user name.
# o password -- The database password.
# o propertiesMap -- The properties that depends on the database.
# o variousMap    -- The various settings about JDBC task.
#
# *The line that starts with '#' means comment-out.
#
map:{
    ; driver   = org.h2.Driver
    ; url      = jdbc:h2:file:../src/test/resources/dummydb/dummydb
    ; schema   =  
    ; user     = sa

  public <T extends @Nullable Object> Future<T> submit(Callable<T> task) {
    return delegate().submit(task);
  }

  @Override
  public Future<?> submit(Runnable task) {
    return delegate().submit(task);
  }

  @Override
  public <T extends @Nullable Object> Future<T> submit(
      Runnable task, @ParametricNullness T result) {
    return delegate().submit(task, result);
  }

                            .findFirst();
                        qaSubproject.ifPresent(
                            qa -> qa.getSubprojects()
                                .forEach(p -> checkTaskProvider.configure(task -> task.dependsOn(p.getPath() + ":check")))
                        );
                    });
                }

                public void doCall() {
                    doCall(null);
                }

        assertNotNull(task.getValue3());
        assertEquals("task-id", task.getValue1());
        assertEquals(path, task.getValue2());
        assertEquals("application/pdf", task.getValue3());
    }

    @Test
    public void test_createTask_withNullPath() {
        // Test task creation with null path
        Map<String, Object> docMap = new HashMap<>();

  EXPECT_EQ(TF_OK, TF_GetCode(status)) << TF_Message(status);

  const char remote_device_name[] =
      "/job:localhost/replica:0/task:1/device:CPU:0";
  const char local_device_name[] =
      "/job:localhost/replica:0/task:0/device:CPU:0";
  CheckRemoteMatMulExecutesOK(ctx, remote_device_name, local_device_name);

  TFE_Executor* executor = TFE_ContextGetExecutorForThread(ctx);

  @Override
  public ListenableFuture<?> submit(Runnable task) {
    return (ListenableFuture<?>) super.submit(task);
  }

  @CanIgnoreReturnValue // TODO(kak): consider removing this
  @Override
  public <T extends @Nullable Object> ListenableFuture<T> submit(
      Runnable task, @ParametricNullness T result) {
    return (ListenableFuture<T>) super.submit(task, result);
  }

        project.getGradle().getTaskGraph().whenReady(graph -> {
            List<String> dockerTasks = graph.getAllTasks()
                .stream()
                .filter(task -> task instanceof DockerBuildTask)
                .map(Task::getPath)
                .collect(Collectors.toList());

            if (dockerTasks.isEmpty() == false) {
                dockerSupportServiceProvider.get().failIfDockerUnavailable(dockerTasks);

                }));
                // This must always be specified precisely, so that
                // projects other than `rest-api-spec` can use this task.
                task.setJsonSchema(new File(project.getRootDir(), "rest-api-spec/src/main/resources/schema.json"));
                task.setReport(new File(project.getBuildDir(), "reports/validateJson.txt"));
            });