ServiceWorker: Move worker candidate process knowledge to ServiceWorkerProcessManager.

content/browser/service_worker/service_worker_process_manager_unittest.cc

+// Copyright 2014 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/basictypes.h"
+#include "content/browser/service_worker/service_worker_process_manager.h"
+#include "content/public/test/test_browser_thread_bundle.h"
+#include "testing/gmock/include/gmock/gmock.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "url/gurl.h"
+
+namespace content {
+
+class ServiceWorkerProcessManagerTest : public testing::Test {
+ public:
+  virtual void SetUp() OVERRIDE {
+    process_manager_.reset(new ServiceWorkerProcessManager(NULL));
+    pattern_ = GURL("http://www.example.com/");
+  }
+
+  virtual void TearDown() OVERRIDE {
+    process_manager_.reset();
+  }
+
+ protected:
+  TestBrowserThreadBundle thread_bundle_;
+  scoped_ptr<ServiceWorkerProcessManager> process_manager_;
+  GURL pattern_;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(ServiceWorkerProcessManagerTest);
+};
+
+TEST_F(ServiceWorkerProcessManagerTest, SortProcess) {
+  // Process 1 has 2 ref, 2 has 3 refs and 3 has 1 refs.
+  process_manager_->AddProcessReferenceToPattern(pattern_, 1);
+  process_manager_->AddProcessReferenceToPattern(pattern_, 1);
+  process_manager_->AddProcessReferenceToPattern(pattern_, 2);
+  process_manager_->AddProcessReferenceToPattern(pattern_, 2);
+  process_manager_->AddProcessReferenceToPattern(pattern_, 2);
+  process_manager_->AddProcessReferenceToPattern(pattern_, 3);
+
+  // Process 2 has the biggest # of references and it should be chosen.
+  EXPECT_THAT(process_manager_->SortProcessesForPattern(pattern_),
+              testing::ElementsAre(2, 1, 3));
+
+  process_manager_->RemoveProcessReferenceFromPattern(pattern_, 1);
+  process_manager_->RemoveProcessReferenceFromPattern(pattern_, 1);
+  // Scores for each process: 2 : 3, 3 : 1, process 1 is removed.
+  EXPECT_THAT(process_manager_->SortProcessesForPattern(pattern_),
+              testing::ElementsAre(2, 3));
+}
+
+}  // namespace content