Add ScopedForbidReturn and its test

util/misc/scoped_forbid_return_test.cc

Index: util/misc/scoped_forbid_return_test.cc
diff --git a/util/misc/scoped_forbid_return_test.cc b/util/misc/scoped_forbid_return_test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..0349fc1580a1759a405f34904c75449f0f73e4bd
--- /dev/null
+++ b/util/misc/scoped_forbid_return_test.cc
@@ -0,0 +1,59 @@
+// Copyright 2014 The Crashpad Authors. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "util/misc/scoped_forbid_return.h"
+
+#include "gtest/gtest.h"
+
+namespace {
+
+using namespace crashpad;
+
+enum ForbidReturnType {
+  kForbidReturnDefault = 0,
+  kForbidReturnArmed,
+  kForbidReturnDisarmed,
+};
+
+void ScopedForbidReturnHelper(ForbidReturnType type) {
+  ScopedForbidReturn forbid_return;
+
+  switch (type) {
+    case kForbidReturnDefault:
+      break;
+    case kForbidReturnArmed:
+      forbid_return.Arm();
+      break;
+    case kForbidReturnDisarmed:
+      forbid_return.Disarm();
+      break;
+  }
+}
+
+const char kForbiddenMessage[] = "attempt to exit scope forbidden";
+
+TEST(ScopedForbidReturnDeathTest, Default) {
+  ASSERT_DEATH(ScopedForbidReturnHelper(kForbidReturnDefault),
+               kForbiddenMessage);
+}
+
+TEST(ScopedForbidReturnDeathTest, Armed) {
+  ASSERT_DEATH(ScopedForbidReturnHelper(kForbidReturnArmed), kForbiddenMessage);
+}
+
+TEST(ScopedForbidReturn, Disarmed) {
+  ScopedForbidReturnHelper(kForbidReturnDisarmed);
+}
+
+}  // namespace