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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/reporting/resources/resource_managed_buffer.h"
#include <array>
#include <cstdint>
#include <string>
#include "base/memory/scoped_refptr.h"
#include "base/task/thread_pool.h"
#include "base/test/task_environment.h"
#include "components/reporting/resources/resource_manager.h"
#include "components/reporting/util/status.h"
#include "components/reporting/util/status_macros.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
using ::testing::AllOf;
using ::testing::Eq;
using ::testing::IsEmpty;
using ::testing::Not;
using ::testing::Property;
using ::testing::StrEq;
namespace reporting {
namespace {
class ResourceManagedBufferTest : public ::testing::Test {
protected:
void SetUp() override {
memory_resource_ =
base::MakeRefCounted<ResourceManager>(1u * 1024LLu); // 1 KiB
}
void TearDown() override { EXPECT_THAT(memory_resource_->GetUsed(), Eq(0u)); }
base::test::TaskEnvironment task_environment_;
scoped_refptr<ResourceManager> memory_resource_;
};
TEST_F(ResourceManagedBufferTest, SuccessfulAllocAndClear) {
ResourceManagedBuffer buffer(memory_resource_);
ASSERT_OK(buffer.Allocate(1024LLu));
EXPECT_THAT(buffer.size(), Eq(1024LLu));
EXPECT_THAT(buffer, Not(IsEmpty()));
buffer.Clear();
}
TEST_F(ResourceManagedBufferTest, SuccessfulAllocAndDestruct) {
ResourceManagedBuffer buffer(memory_resource_);
ASSERT_OK(buffer.Allocate(1024LLu));
EXPECT_THAT(buffer.size(), Eq(1024LLu));
EXPECT_THAT(buffer, Not(IsEmpty()));
}
TEST_F(ResourceManagedBufferTest, FailedAlloc) {
ResourceManagedBuffer buffer(memory_resource_);
const auto status = buffer.Allocate(2u * 1024LLu);
EXPECT_THAT(status,
AllOf(Property(&Status::code, Eq(error::RESOURCE_EXHAUSTED)),
Property(&Status::error_message,
StrEq("Not enough memory for the buffer"))));
EXPECT_THAT(buffer, IsEmpty());
}
TEST_F(ResourceManagedBufferTest, SuccessfulAllocAndFillIn) {
ResourceManagedBuffer buffer(memory_resource_);
ASSERT_OK(buffer.Allocate(1024LLu));
EXPECT_THAT(buffer.size(), Eq(1024LLu));
EXPECT_THAT(buffer, Not(IsEmpty()));
constexpr static std::array<char, 18> kData{"ABCDEF 0123456789"};
for (size_t i = 0; kData[i]; ++i) {
*buffer.at(512u + i) = kData[i];
}
EXPECT_THAT(std::string(buffer.at(512u), std::strlen(kData.data())),
StrEq(kData.data()));
}
TEST_F(ResourceManagedBufferTest, MultipleAllocations) {
ResourceManagedBuffer buffer(memory_resource_);
// Every time we allocate something, previous buffer is released.
for (int i = 0; i < 64; ++i) {
ASSERT_OK(buffer.Allocate(1024LLu));
EXPECT_THAT(buffer.size(), Eq(1024LLu));
EXPECT_THAT(buffer, Not(IsEmpty()));
}
}
} // namespace
} // namespace reporting
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