Virtualize The Existence of a Scheduler Worker Thread

base/task_scheduler/scheduler_worker_stack_unittest.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/task_scheduler/scheduler_worker_stack.h"
 
 #include "base/logging.h"
 #include "base/memory/ptr_util.h"
 #include "base/memory/ref_counted.h"
 #include "base/task_scheduler/scheduler_worker.h"
@@ skipping 14 matching lines @@
   void OnMainEntry(SchedulerWorker* worker) override {}
   scoped_refptr<Sequence> GetWork(SchedulerWorker* worker) override {
     return nullptr;
   }
   void ReEnqueueSequence(scoped_refptr<Sequence> sequence) override {
     ADD_FAILURE() << "This delegate not expect to have sequences to reenqueue.";
   }
   TimeDelta GetSleepTimeout() override {
     return TimeDelta::Max();
   }
+  bool CanDetach(SchedulerWorker* worker) override {
+    return false;
+  }
 };
 
 class TaskSchedulerWorkerStackTest : public testing::Test {
  protected:
   void SetUp() override {
     worker_a_ = SchedulerWorker::Create(
         ThreadPriority::NORMAL,
-        WrapUnique(new MockSchedulerWorkerDelegate), &task_tracker_);
+        WrapUnique(new MockSchedulerWorkerDelegate), &task_tracker_,
+        SchedulerWorker::InitialState::ALIVE);
     ASSERT_TRUE(worker_a_);
     worker_b_ = SchedulerWorker::Create(
         ThreadPriority::NORMAL,
-        WrapUnique(new MockSchedulerWorkerDelegate), &task_tracker_);
+        WrapUnique(new MockSchedulerWorkerDelegate), &task_tracker_,
+        SchedulerWorker::InitialState::ALIVE);
     ASSERT_TRUE(worker_b_);
     worker_c_ = SchedulerWorker::Create(
         ThreadPriority::NORMAL,
-        WrapUnique(new MockSchedulerWorkerDelegate), &task_tracker_);
+        WrapUnique(new MockSchedulerWorkerDelegate), &task_tracker_,
+        SchedulerWorker::InitialState::ALIVE);
     ASSERT_TRUE(worker_c_);
   }
 
   void TearDown() override {
     worker_a_->JoinForTesting();
     worker_b_->JoinForTesting();
     worker_c_->JoinForTesting();
   }
 
   std::unique_ptr<SchedulerWorker> worker_a_;
@@ skipping 97 matching lines @@
 
 // Verify that Push() DCHECKs when a value is inserted twice.
 TEST_F(TaskSchedulerWorkerStackTest, PushTwice) {
   SchedulerWorkerStack stack;
   stack.Push(worker_a_.get());
   EXPECT_DCHECK_DEATH({ stack.Push(worker_a_.get()); }, "");
 }
 
 }  // namespace internal
 }  // namespace base