AU: Add unit tests for the Terminator class.

terminator_unittest.cc

+// Copyright (c) 2010 The Chromium OS 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 <gtest/gtest.h>
+#include <gtest/gtest-spi.h>
+
+#include "update_engine/terminator.h"
+
+using std::string;
+using testing::ExitedWithCode;
+
+namespace chromeos_update_engine {
+
+class TerminatorTest : public ::testing::Test {
+ protected:
+  virtual void SetUp() {
+    Terminator::Init();
+    ASSERT_FALSE(Terminator::exit_blocked());
+    ASSERT_FALSE(Terminator::exit_requested());
+  }
+};
+
+typedef TerminatorTest TerminatorDeathTest;
+
+namespace {
+void UnblockExitThroughUnblocker() {
+  ScopedTerminatorExitUnblocker unblocker = ScopedTerminatorExitUnblocker();
+}
+
+void RaiseSIGTERM() {
+  ASSERT_EXIT(raise(SIGTERM), ExitedWithCode(0), "");
+}
+}  // namespace {}
+
+TEST_F(TerminatorTest, HandleSignalTest) {
+  Terminator::set_exit_blocked(true);
+  Terminator::HandleSignal(SIGTERM);
+  ASSERT_TRUE(Terminator::exit_requested());
+}
+
+TEST_F(TerminatorTest, ScopedTerminatorExitUnblockerTest) {
+  Terminator::set_exit_blocked(true);
+  ASSERT_TRUE(Terminator::exit_blocked());
+  ASSERT_FALSE(Terminator::exit_requested());
+  UnblockExitThroughUnblocker();
+  ASSERT_FALSE(Terminator::exit_blocked());
+  ASSERT_FALSE(Terminator::exit_requested());
+}
+
+TEST_F(TerminatorDeathTest, ExitTest) {
+  ASSERT_EXIT(Terminator::Exit(), ExitedWithCode(0), "");
+  Terminator::set_exit_blocked(true);
+  ASSERT_EXIT(Terminator::Exit(), ExitedWithCode(0), "");
+}
+
+TEST_F(TerminatorDeathTest, RaiseSignalTest) {
+  RaiseSIGTERM();
+  Terminator::set_exit_blocked(true);
+  EXPECT_FATAL_FAILURE(RaiseSIGTERM(), "");
+}
+
+TEST_F(TerminatorDeathTest, ScopedTerminatorExitUnblockerExitTest) {
+  Terminator::set_exit_blocked(true);
+  Terminator::exit_requested_ = 1;
+  ASSERT_EXIT(UnblockExitThroughUnblocker(), ExitedWithCode(0), "");
+}
+
+}  // namespace chromeos_update_engine