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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
commit36d22d82aa202bb199967e9512281e9a53db42c9 (patch)
tree105e8c98ddea1c1e4784a60a5a6410fa416be2de /ipc/gtest/TestBigBuffer.cpp
parentInitial commit. (diff)
downloadfirefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz
firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip
Adding upstream version 115.7.0esr.upstream/115.7.0esr
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'ipc/gtest/TestBigBuffer.cpp')
-rw-r--r--ipc/gtest/TestBigBuffer.cpp86
1 files changed, 86 insertions, 0 deletions
diff --git a/ipc/gtest/TestBigBuffer.cpp b/ipc/gtest/TestBigBuffer.cpp
new file mode 100644
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+++ b/ipc/gtest/TestBigBuffer.cpp
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+/* -*- 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/BigBuffer.h"
+
+namespace mozilla::ipc {
+
+static bool SerializeAndDeserialize(BigBuffer&& aIn, BigBuffer* aOut) {
+ IPC::Message msg(MSG_ROUTING_NONE, 0);
+ {
+ IPC::MessageWriter writer(msg);
+ IPC::WriteParam(&writer, std::move(aIn));
+ }
+ EXPECT_EQ(aIn.Size(), 0u);
+
+ IPC::MessageReader reader(msg);
+ return IPC::ReadParam(&reader, aOut);
+}
+
+TEST(BigBuffer, Empty)
+{
+ BigBuffer in(0);
+ EXPECT_EQ(in.GetSharedMemory(), nullptr);
+ EXPECT_EQ(in.Size(), 0u);
+
+ BigBuffer out;
+ ASSERT_TRUE(SerializeAndDeserialize(std::move(in), &out));
+
+ EXPECT_EQ(in.GetSharedMemory(), nullptr);
+ EXPECT_EQ(in.Size(), 0u);
+ EXPECT_EQ(out.GetSharedMemory(), nullptr);
+ EXPECT_EQ(out.Size(), 0u);
+}
+
+TEST(BigBuffer, SmallSize)
+{
+ uint8_t data[]{1, 2, 3};
+ BigBuffer in{Span(data)};
+ EXPECT_EQ(in.GetSharedMemory(), nullptr);
+ EXPECT_EQ(in.Size(), 3u);
+
+ BigBuffer out;
+ ASSERT_TRUE(SerializeAndDeserialize(std::move(in), &out));
+
+ EXPECT_EQ(in.GetSharedMemory(), nullptr);
+ EXPECT_EQ(in.Size(), 0u);
+ EXPECT_EQ(out.GetSharedMemory(), nullptr);
+ EXPECT_EQ(out.Size(), 3u);
+
+ EXPECT_TRUE(out.AsSpan() == Span(data));
+}
+
+TEST(BigBuffer, BigSize)
+{
+ size_t size = BigBuffer::kShmemThreshold * 2;
+ // Generate a large block of random data which will be serialized in a shmem.
+ nsTArray<uint8_t> data(size);
+ for (size_t i = 0; i < size; ++i) {
+ data.AppendElement(mozilla::RandomUint64OrDie());
+ }
+ BigBuffer in{Span(data)};
+ EXPECT_NE(in.GetSharedMemory(), nullptr);
+ EXPECT_EQ(in.Size(), size);
+ EXPECT_EQ(in.GetSharedMemory()->memory(), in.Data());
+
+ BigBuffer out;
+ ASSERT_TRUE(SerializeAndDeserialize(std::move(in), &out));
+
+ EXPECT_EQ(in.GetSharedMemory(), nullptr);
+ EXPECT_EQ(in.Size(), 0u);
+ EXPECT_NE(out.GetSharedMemory(), nullptr);
+ EXPECT_EQ(out.Size(), size);
+ EXPECT_EQ(out.GetSharedMemory()->memory(), out.Data());
+
+ EXPECT_TRUE(out.AsSpan() == Span(data));
+}
+
+} // namespace mozilla::ipc