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87 lines
2.4 KiB
C++
87 lines
2.4 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "chrome/common/ipc_message.h"
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#include "chrome/common/ipc_message_utils.h"
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#include "gtest/gtest.h"
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#include "mozilla/RandomNum.h"
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#include "mozilla/ipc/BigBuffer.h"
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namespace mozilla::ipc {
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static bool SerializeAndDeserialize(BigBuffer&& aIn, BigBuffer* aOut) {
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IPC::Message msg(MSG_ROUTING_NONE, 0);
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{
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IPC::MessageWriter writer(msg);
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IPC::WriteParam(&writer, std::move(aIn));
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}
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EXPECT_EQ(aIn.Size(), 0u);
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IPC::MessageReader reader(msg);
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return IPC::ReadParam(&reader, aOut);
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}
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TEST(BigBuffer, Empty)
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{
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BigBuffer in(0);
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EXPECT_EQ(in.GetSharedMemory(), nullptr);
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EXPECT_EQ(in.Size(), 0u);
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BigBuffer out;
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ASSERT_TRUE(SerializeAndDeserialize(std::move(in), &out));
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EXPECT_EQ(in.GetSharedMemory(), nullptr);
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EXPECT_EQ(in.Size(), 0u);
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EXPECT_EQ(out.GetSharedMemory(), nullptr);
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EXPECT_EQ(out.Size(), 0u);
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}
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TEST(BigBuffer, SmallSize)
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{
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uint8_t data[]{1, 2, 3};
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BigBuffer in{Span(data)};
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EXPECT_EQ(in.GetSharedMemory(), nullptr);
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EXPECT_EQ(in.Size(), 3u);
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BigBuffer out;
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ASSERT_TRUE(SerializeAndDeserialize(std::move(in), &out));
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EXPECT_EQ(in.GetSharedMemory(), nullptr);
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EXPECT_EQ(in.Size(), 0u);
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EXPECT_EQ(out.GetSharedMemory(), nullptr);
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EXPECT_EQ(out.Size(), 3u);
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EXPECT_TRUE(out.AsSpan() == Span(data));
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}
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TEST(BigBuffer, BigSize)
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{
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size_t size = BigBuffer::kShmemThreshold * 2;
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// Generate a large block of random data which will be serialized in a shmem.
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nsTArray<uint8_t> data(size);
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for (size_t i = 0; i < size; ++i) {
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data.AppendElement(mozilla::RandomUint64OrDie());
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}
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BigBuffer in{Span(data)};
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EXPECT_NE(in.GetSharedMemory(), nullptr);
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EXPECT_EQ(in.Size(), size);
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EXPECT_EQ(in.GetSharedMemory()->Memory(), in.Data());
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BigBuffer out;
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ASSERT_TRUE(SerializeAndDeserialize(std::move(in), &out));
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EXPECT_EQ(in.GetSharedMemory(), nullptr);
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EXPECT_EQ(in.Size(), 0u);
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EXPECT_NE(out.GetSharedMemory(), nullptr);
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EXPECT_EQ(out.Size(), size);
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EXPECT_EQ(out.GetSharedMemory()->Memory(), out.Data());
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EXPECT_TRUE(out.AsSpan() == Span(data));
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}
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} // namespace mozilla::ipc
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