Add best-effort/allow rollback flags on WorkItem.

chrome/installer/util/work_item_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 "chrome/installer/util/work_item.h"
+
+#include "testing/gmock/include/gmock/gmock.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace {
+
+class MockWorkItem : public WorkItem {
+ public:
+  MOCK_METHOD0(DoImpl, bool());
+  MOCK_METHOD0(RollbackImpl, void());
+};
+
+using StrictMockWorkItem = testing::StrictMock<MockWorkItem>;
+using testing::Return;
+
+}  // namespace
+
+// Verify that Do() calls DoImpl() and returns its return value for a
+// non-best-effort WorkItem.
+TEST(WorkItemTest, Do) {
+  {
+    StrictMockWorkItem item_success;
+    item_success.set_best_effort(false);
+    EXPECT_CALL(item_success, DoImpl()).WillOnce(Return(true));
+    EXPECT_TRUE(item_success.Do());
+  }
+
+  {
+    StrictMockWorkItem item_failure;
+    item_failure.set_best_effort(false);
+    EXPECT_CALL(item_failure, DoImpl()).WillOnce(Return(false));
+    EXPECT_FALSE(item_failure.Do());
+  }
+}
+
+// Verify that Do() calls DoImpl() and returns true for a best-effort WorkItem.
+TEST(WorkItemTest, DoBestEffort) {
+  {
+    StrictMockWorkItem item_success;
+    item_success.set_best_effort(true);
+    EXPECT_CALL(item_success, DoImpl()).WillOnce(Return(true));
+    EXPECT_TRUE(item_success.Do());
+  }
+
+  {
+    StrictMockWorkItem item_failure;
+    item_failure.set_best_effort(true);
+    EXPECT_CALL(item_failure, DoImpl()).WillOnce(Return(false));
+    EXPECT_TRUE(item_failure.Do());
+    testing::Mock::VerifyAndClearExpectations(&item_failure);
+  }
+}
+
+// Verify that Rollback() calls RollbackImpl() for a WorkItem with rollback
+// enabled.
+TEST(WorkItemTest, Rollback) {
+  StrictMockWorkItem item;
+  item.set_rollback_enabled(true);
+  EXPECT_TRUE(item.rollback_enabled());
+
+  {
+    testing::InSequence s;
+    EXPECT_CALL(item, DoImpl()).WillOnce(Return(true));
+    EXPECT_CALL(item, RollbackImpl());
+  }
+
+  item.Do();
+  item.Rollback();
+}
+
+// Verify that Rollback() doesn't call RollbackImpl() for a WorkItem with
+// rollback disabled.
+TEST(WorkItemTest, RollbackNotAllowed) {
+  StrictMockWorkItem item;
+  item.set_rollback_enabled(false);
+
+  EXPECT_CALL(item, DoImpl()).WillOnce(Return(true));
+
+  item.Do();
+  item.Rollback();
+}
+
+// Verify that the default value of the "best-effort" flag is false and that the
+// setter works.
+TEST(WorkItemTest, BestEffortDefaultValueAndSetter) {
+  MockWorkItem work_item;
+  EXPECT_FALSE(work_item.best_effort());
+  work_item.set_best_effort(true);
+  EXPECT_TRUE(work_item.best_effort());
+}
+
+// Verify that the default value of the "enable rollback" flag is true and that
+// the setter works.
+TEST(WorkItemTest, EnableRollbackDefaultValueAndSetter) {
+  MockWorkItem work_item;
+  EXPECT_TRUE(work_item.rollback_enabled());
+  work_item.set_rollback_enabled(false);
+  EXPECT_FALSE(work_item.rollback_enabled());
+}