Fix restore of a tab from a recently-closed browser window

components/sessions/core/tab_restore_service_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 "components/sessions/core/tab_restore_service.h"
+
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace sessions {
+
+namespace {
+
+void PopulateTab(TabRestoreService::Tab* tab) {
+  tab->timestamp = base::Time::FromDoubleT(100.0);
+  tab->from_last_session = true;
+  tab->current_navigation_index = 42;
+  tab->browser_id = 1;
+  tab->tabstrip_index = 5;
+  tab->pinned = true;
+  tab->extension_app_id = "dummy";
+  tab->user_agent_override = "override";
+}
+
+void TestEntryEquality(TabRestoreService::Entry* expected,
+                       TabRestoreService::Entry* actual) {
+  EXPECT_EQ(expected->id, actual->id);
+  EXPECT_EQ(expected->type, actual->type);
+  EXPECT_EQ(expected->timestamp, actual->timestamp);
+  EXPECT_EQ(expected->from_last_session, actual->from_last_session);
+}
+
+void TestTabEquality(TabRestoreService::Tab* expected,
+                     TabRestoreService::Tab* actual) {
+  TestEntryEquality(expected, actual);
+  EXPECT_EQ(expected->current_navigation_index,
+            actual->current_navigation_index);
+  EXPECT_EQ(expected->browser_id, actual->browser_id);
+  EXPECT_EQ(expected->tabstrip_index, actual->tabstrip_index);
+  EXPECT_EQ(expected->pinned, actual->pinned);
+  EXPECT_EQ(expected->extension_app_id, actual->extension_app_id);
+  EXPECT_EQ(expected->user_agent_override, actual->user_agent_override);
+}
+
+TEST(Tab, CopyConstructor) {
+  TabRestoreService::Tab tab_to_copy;
+  PopulateTab(&tab_to_copy);
+
+  TabRestoreService::Tab copied_tab(tab_to_copy);
+  TestTabEquality(&tab_to_copy, &copied_tab);
+}
+
+TEST(Tab, AssignmentOperator) {
+  TabRestoreService::Tab tab_to_assign;
+  PopulateTab(&tab_to_assign);
+
+  TabRestoreService::Tab assigned_tab;
+  assigned_tab = tab_to_assign;
+  TestTabEquality(&tab_to_assign, &assigned_tab);
+}
+
+}  // namespace
+
+}  // namespace sessions