Add 'third_party/abseil_cpp/' from commit '768eb2ca2857342673fcd462792ce04b8bac3fa3' r/781

git-subtree-dir: third_party/abseil_cpp
git-subtree-mainline: ffb2ae54beb5796cd408fbe15d2d2da09ff37adf
git-subtree-split: 768eb2ca2857342673fcd462792ce04b8bac3fa3

1 files changed, 57 insertions, 0 deletions

diff --git a/third_party/abseil_cpp/absl/memory/memory_exception_safety_test.cc b/third_party/abseil_cpp/absl/memory/memory_exception_safety_test.cc
new file mode 100644
index 000000000000..1df72614c00d
--- /dev/null
+++ b/third_party/abseil_cpp/absl/memory/memory_exception_safety_test.cc
@@ -0,0 +1,57 @@
+// Copyright 2018 The Abseil Authors.
+//
+// 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
+//
+//      https://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 "absl/memory/memory.h"
+
+#include "absl/base/config.h"
+
+#ifdef ABSL_HAVE_EXCEPTIONS
+
+#include "gtest/gtest.h"
+#include "absl/base/internal/exception_safety_testing.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace {
+
+constexpr int kLength = 50;
+using Thrower = testing::ThrowingValue<testing::TypeSpec::kEverythingThrows>;
+
+TEST(MakeUnique, CheckForLeaks) {
+  constexpr int kValue = 321;
+  auto tester = testing::MakeExceptionSafetyTester()
+                    .WithInitialValue(Thrower(kValue))
+                    // Ensures make_unique does not modify the input. The real
+                    // test, though, is ConstructorTracker checking for leaks.
+                    .WithContracts(testing::strong_guarantee);
+
+  EXPECT_TRUE(tester.Test([](Thrower* thrower) {
+    static_cast<void>(absl::make_unique<Thrower>(*thrower));
+  }));
+
+  EXPECT_TRUE(tester.Test([](Thrower* thrower) {
+    static_cast<void>(absl::make_unique<Thrower>(std::move(*thrower)));
+  }));
+
+  // Test T[n] overload
+  EXPECT_TRUE(tester.Test([&](Thrower*) {
+    static_cast<void>(absl::make_unique<Thrower[]>(kLength));
+  }));
+}
+
+}  // namespace
+ABSL_NAMESPACE_END
+}  // namespace absl
+
+#endif  // ABSL_HAVE_EXCEPTIONS