cef/tests/ceftests/shared_process_message_unit...

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// Copyright (c) 2022 The Chromium Embedded Framework Authors. All rights
// reserved. Use of this source code is governed by a BSD-style license that
// can be found in the LICENSE file.
#include "include/cef_shared_process_message_builder.h"
#include "tests/gtest/include/gtest/gtest.h"
#include <array>
#include <type_traits>
namespace {
constexpr bool kTestFlag = true;
constexpr int kTestValue = 42;
constexpr double kTestDoubleValue = 123.456;
struct TestData {
bool flag = kTestFlag;
int value = kTestValue;
double doubleValue = kTestDoubleValue;
std::array<size_t, 50> buffer{};
};
const char kSharedMessageName[] = "SharedProcessMessageTest";
CefRefPtr<CefSharedProcessMessageBuilder> CreateTestBuilder() {
auto builder = CefSharedProcessMessageBuilder::Create(kSharedMessageName,
sizeof(TestData));
EXPECT_NE(builder, nullptr);
EXPECT_TRUE(builder->IsValid());
static_assert(
std::is_trivially_copyable_v<TestData>,
"Do not copy non-trivially-copyable object across memory spaces");
auto data = static_cast<TestData*>(builder->Memory());
EXPECT_NE(data, nullptr);
data->value = kTestValue;
data->doubleValue = kTestDoubleValue;
data->flag = kTestFlag;
for (size_t i = 0; i < data->buffer.size(); ++i) {
data->buffer[i] = i;
}
return builder;
}
} // namespace
TEST(SharedProcessMessageTest, CanBuildSharedMessageUsingBuilder) {
auto builder = CreateTestBuilder();
auto message = builder->Build();
EXPECT_FALSE(builder->IsValid());
EXPECT_NE(message, nullptr);
EXPECT_TRUE(message->IsValid());
EXPECT_TRUE(message->IsReadOnly());
auto region = message->GetSharedMemoryRegion();
EXPECT_TRUE(region->IsValid());
auto read_data = static_cast<const TestData*>(region->Memory());
EXPECT_EQ(read_data->flag, kTestFlag);
EXPECT_EQ(read_data->value, kTestValue);
EXPECT_EQ(read_data->doubleValue, kTestDoubleValue);
for (size_t i = 0; i < read_data->buffer.size(); ++i) {
EXPECT_EQ(read_data->buffer[i], i);
}
}
TEST(SharedProcessMessageTest, CopyingIsNotSupportedBySharedMessage) {
auto builder = CefSharedProcessMessageBuilder::Create(kSharedMessageName,
sizeof(TestData));
CefRefPtr<CefProcessMessage> message = builder->Build();
CefRefPtr<CefProcessMessage> message_copy = message->Copy();
EXPECT_EQ(message_copy, nullptr);
}
TEST(SharedProcessMessageTest,
RegionRemainsValidAfterSharedMessageDestruction) {
CefRefPtr<CefSharedMemoryRegion> region;
{
auto builder = CreateTestBuilder();
auto message = builder->Build();
region = message->GetSharedMemoryRegion();
}
EXPECT_TRUE(region->IsValid());
auto read_data = static_cast<const TestData*>(region->Memory());
EXPECT_EQ(read_data->flag, kTestFlag);
EXPECT_EQ(read_data->value, kTestValue);
EXPECT_EQ(read_data->doubleValue, kTestDoubleValue);
for (size_t i = 0; i < read_data->buffer.size(); ++i) {
EXPECT_EQ(read_data->buffer[i], i);
}
}
TEST(SharedProcessMessageTest, WrittenValuesVisibleInOtherRegion) {
CefRefPtr<CefSharedMemoryRegion> read_region;
CefRefPtr<CefSharedMemoryRegion> write_region;
{
auto builder = CreateTestBuilder();
auto message = builder->Build();
read_region = message->GetSharedMemoryRegion();
write_region = message->GetSharedMemoryRegion();
}
EXPECT_TRUE(write_region->IsValid());
auto write_data = static_cast<TestData*>(write_region->Memory());
write_data->flag = !kTestFlag;
write_data->value = kTestValue * 2;
auto new_double_value = kTestDoubleValue * 3;
write_data->doubleValue = new_double_value;
for (size_t i = 0; i < write_data->buffer.size(); ++i) {
write_data->buffer[i] = i + 1;
}
EXPECT_TRUE(read_region->IsValid());
auto read_data = static_cast<const TestData*>(read_region->Memory());
EXPECT_EQ(read_data->flag, !kTestFlag);
EXPECT_EQ(read_data->value, kTestValue * 2);
EXPECT_EQ(read_data->doubleValue, new_double_value);
for (size_t i = 0; i < read_data->buffer.size(); ++i) {
EXPECT_EQ(read_data->buffer[i], i + 1);
}
}