flutter::testing::EmbedderTestTaskRunner Class Reference

A task runner that we expect the embedder to provide but whose implementation is a real FML task runner. More...

#include <embedder_unittests_util.h>

Public Types
using	TaskExpiryCallback = std::function< void(FlutterTask)>
using	DestructionCallback = std::function< void()>

Public Member Functions
	EmbedderTestTaskRunner (fml::RefPtr< fml::TaskRunner > real_task_runner, TaskExpiryCallback on_task_expired)
	EmbedderTestTaskRunner (fml::RefPtr< fml::TaskRunner > real_task_runner, TaskExpiryCallback on_task_expired, std::function< void()> destruction_callback)
const FlutterTaskRunnerDescription &	GetFlutterTaskRunnerDescription ()

Detailed Description

A task runner that we expect the embedder to provide but whose implementation is a real FML task runner.

Definition at line 104 of file embedder_unittests_util.h.

Member Typedef Documentation

DestructionCallback

using flutter::testing::EmbedderTestTaskRunner::DestructionCallback = std::function<void()>

Definition at line 107 of file embedder_unittests_util.h.

TaskExpiryCallback

using flutter::testing::EmbedderTestTaskRunner::TaskExpiryCallback = std::function<void(FlutterTask)>

Definition at line 106 of file embedder_unittests_util.h.

Constructor & Destructor Documentation

EmbedderTestTaskRunner() [1/2]

flutter::testing::EmbedderTestTaskRunner::EmbedderTestTaskRunner ( fml::RefPtr< fml::TaskRunner >  real_task_runner, TaskExpiryCallback  on_task_expired  )

inline

Definition at line 109 of file embedder_unittests_util.h.

      : EmbedderTestTaskRunner(std::move(real_task_runner),
                               std::move(on_task_expired),
                               {}) {}

EmbedderTestTaskRunner() [2/2]

flutter::testing::EmbedderTestTaskRunner::EmbedderTestTaskRunner ( fml::RefPtr< fml::TaskRunner >  real_task_runner, TaskExpiryCallback  on_task_expired, std::function< void()>  destruction_callback  )

inline

Definition at line 115 of file embedder_unittests_util.h.

      : identifier_(++sEmbedderTaskRunnerIdentifiers),
        real_task_runner_(std::move(real_task_runner)),
        on_task_expired_(std::move(on_task_expired)),
        destruction_callback_(std::move(destruction_callback)) {
    FML_CHECK(real_task_runner_);
    FML_CHECK(on_task_expired_);
 
    task_runner_description_.struct_size = sizeof(FlutterTaskRunnerDescription);
    task_runner_description_.user_data = this;
    task_runner_description_.runs_task_on_current_thread_callback =
        [](void* user_data) -> bool {
      return reinterpret_cast<EmbedderTestTaskRunner*>(user_data)
          ->real_task_runner_->RunsTasksOnCurrentThread();
    };
    task_runner_description_.post_task_callback = [](FlutterTask task,
                                                     uint64_t target_time_nanos,
                                                     void* user_data) -> void {
      auto thiz = reinterpret_cast<EmbedderTestTaskRunner*>(user_data);
 
      auto target_time = fml::TimePoint::FromEpochDelta(
          fml::TimeDelta::FromNanoseconds(target_time_nanos));
      auto on_task_expired = thiz->on_task_expired_;
      auto invoke_task = [task, on_task_expired]() { on_task_expired(task); };
      auto real_task_runner = thiz->real_task_runner_;
 
      real_task_runner->PostTaskForTime(invoke_task, target_time);
    };
    if (destruction_callback_) {
      task_runner_description_.destruction_callback = [](void* user_data) {
        auto thiz = reinterpret_cast<EmbedderTestTaskRunner*>(user_data);
        thiz->destruction_callback_();
      };
    } else {
      task_runner_description_.destruction_callback = [](void* user_data) {};
    }
    task_runner_description_.identifier = identifier_;
  }

References FlutterTaskRunnerDescription::destruction_callback, FML_CHECK, fml::TimePoint::FromEpochDelta(), fml::TimeDelta::FromNanoseconds(), FlutterTaskRunnerDescription::identifier, FlutterTaskRunnerDescription::post_task_callback, FlutterTaskRunnerDescription::runs_task_on_current_thread_callback, fml::TaskRunner::RunsTasksOnCurrentThread(), FlutterTaskRunnerDescription::struct_size, user_data, and FlutterTaskRunnerDescription::user_data.

Member Function Documentation

GetFlutterTaskRunnerDescription()

const FlutterTaskRunnerDescription & flutter::testing::EmbedderTestTaskRunner::GetFlutterTaskRunnerDescription ( )

inline

Definition at line 156 of file embedder_unittests_util.h.

                                                                        {
    return task_runner_description_;
  }

Referenced by flutter::testing::TEST_F(), and flutter::testing::TEST_F().

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The documentation for this class was generated from the following files:

• shell/platform/embedder/tests/embedder_unittests_util.h
• shell/platform/embedder/tests/embedder_unittests.cc