Adding upstream version 115.7.0esr.upstream/115.7.0esr

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 58 insertions, 0 deletions

diff --git a/ipc/gtest/TestUnsafeSharedMemoryHandle.cpp b/ipc/gtest/TestUnsafeSharedMemoryHandle.cpp
new file mode 100644
index 0000000000..6934ae0d4c
--- /dev/null
+++ b/ipc/gtest/TestUnsafeSharedMemoryHandle.cpp
@@ -0,0 +1,58 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "chrome/common/ipc_message.h"
+#include "chrome/common/ipc_message_utils.h"
+#include "gtest/gtest.h"
+
+#include "mozilla/RandomNum.h"
+#include "mozilla/ipc/RawShmem.h"
+
+namespace mozilla::ipc {
+
+static bool SerializeAndDeserialize(UnsafeSharedMemoryHandle&& aIn,
+                                    UnsafeSharedMemoryHandle* aOut) {
+  IPC::Message msg(MSG_ROUTING_NONE, 0);
+  {
+    IPC::MessageWriter writer(msg);
+    IPC::WriteParam(&writer, std::move(aIn));
+  }
+
+  IPC::MessageReader reader(msg);
+  return IPC::ReadParam(&reader, aOut);
+}
+
+void TestUnsafeSharedMemoryHandle(size_t aSize) {
+  auto maybeHandle = UnsafeSharedMemoryHandle::CreateAndMap(aSize);
+  ASSERT_TRUE(maybeHandle);
+  auto [handle, mapping] = maybeHandle.extract();
+
+  EXPECT_EQ(mapping.Size(), aSize);
+
+  auto inBytes = mapping.Bytes();
+  for (size_t i = 0; i < aSize; ++i) {
+    inBytes[i] = static_cast<uint8_t>(i % 255);
+  }
+
+  UnsafeSharedMemoryHandle out;
+  ASSERT_TRUE(SerializeAndDeserialize(std::move(handle), &out));
+
+  auto mapping2 = WritableSharedMemoryMapping::Open(std::move(out)).value();
+
+  EXPECT_EQ(mapping2.Size(), aSize);
+  auto outBytes = mapping2.Bytes();
+  for (size_t i = 0; i < aSize; ++i) {
+    EXPECT_EQ(outBytes[i], static_cast<uint8_t>(i % 255));
+  }
+}
+
+TEST(UnsafeSharedMemoryHandle, Empty)
+{ TestUnsafeSharedMemoryHandle(0); }
+
+TEST(UnsafeSharedMemoryHandle, SmallSize)
+{ TestUnsafeSharedMemoryHandle(2048); }
+
+}  // namespace mozilla::ipc