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// Copyright 2025 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/download/public/common/desktop/desktop_auto_resumption_handler.h"
#include "base/test/scoped_feature_list.h"
#include "base/test/task_environment.h"
#include "base/time/time.h"
#include "components/download/public/common/download_features.h"
#include "components/download/public/common/mock_download_item.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
using testing::_;
using testing::NiceMock;
using testing::Return;
using testing::ReturnRef;
namespace download {
class DesktopAutoResumptionHandlerTest : public testing::Test {
public:
DesktopAutoResumptionHandlerTest()
: task_environment_(
base::test::TaskEnvironment::MainThreadType::UI,
base::test::TaskEnvironment::ThreadPoolExecutionMode::QUEUED,
base::test::TaskEnvironment::TimeSource::MOCK_TIME) {}
DesktopAutoResumptionHandlerTest(const DesktopAutoResumptionHandlerTest&) =
delete;
DesktopAutoResumptionHandlerTest& operator=(
const DesktopAutoResumptionHandlerTest&) = delete;
~DesktopAutoResumptionHandlerTest() override = default;
protected:
void SetUp() override {
handler_ = std::make_unique<DesktopAutoResumptionHandler>();
scoped_feature_list_.InitAndEnableFeature(features::kBackoffInDownloading);
}
void TearDown() override {}
std::unique_ptr<DesktopAutoResumptionHandler> handler_;
base::test::TaskEnvironment task_environment_{
base::test::TaskEnvironment::TimeSource::MOCK_TIME};
base::test::ScopedFeatureList scoped_feature_list_;
};
// Test IsAutoResumableDownload
TEST_F(DesktopAutoResumptionHandlerTest, IsAutoResumableDownload) {
auto item = std::make_unique<NiceMock<MockDownloadItem>>();
// Null check
EXPECT_FALSE(handler_->IsAutoResumableDownload(nullptr));
// IN_PROGRESS state, not paused
EXPECT_CALL(*item, GetState()).WillOnce(Return(DownloadItem::IN_PROGRESS));
EXPECT_CALL(*item, IsPaused()).WillOnce(Return(false));
EXPECT_TRUE(handler_->IsAutoResumableDownload(item.get()));
// IN_PROGRESS state, paused
EXPECT_CALL(*item, GetState()).WillOnce(Return(DownloadItem::IN_PROGRESS));
EXPECT_CALL(*item, IsPaused()).WillOnce(Return(true));
EXPECT_FALSE(handler_->IsAutoResumableDownload(item.get()));
// INTERRUPTED state, not paused
EXPECT_CALL(*item, GetState()).WillOnce(Return(DownloadItem::INTERRUPTED));
EXPECT_CALL(*item, IsPaused()).WillOnce(Return(false));
EXPECT_TRUE(handler_->IsAutoResumableDownload(item.get()));
// COMPLETE state
EXPECT_CALL(*item, GetState()).WillOnce(Return(DownloadItem::COMPLETE));
EXPECT_FALSE(handler_->IsAutoResumableDownload(item.get()));
}
// Test OnDownloadUpdated
TEST_F(DesktopAutoResumptionHandlerTest, DownloadHandling) {
auto item = std::make_unique<NiceMock<MockDownloadItem>>();
// Test OnDownloadUpdated with interrupted download
ON_CALL(*item, GetState()).WillByDefault(Return(DownloadItem::INTERRUPTED));
ON_CALL(*item, GetAutoResumeCount()).WillByDefault(Return(2));
ON_CALL(*item, IsPaused()).WillByDefault(Return(false));
static const std::string guid = "test_guid";
ON_CALL(*item, GetGuid()).WillByDefault(ReturnRef(guid));
handler_->OnDownloadUpdated(item.get());
EXPECT_CALL(*item, Resume(false));
// Fast forward time and check if resume is called
task_environment_.FastForwardBy(base::Minutes(1));
}
// Test we won't call Resume if download is destroyed.
TEST_F(DesktopAutoResumptionHandlerTest, DownloadDestroyedWithReset) {
auto item = std::make_unique<NiceMock<MockDownloadItem>>();
item->AddObserver(handler_.get());
ON_CALL(*item, GetState()).WillByDefault(Return(DownloadItem::INTERRUPTED));
ON_CALL(*item, GetAutoResumeCount()).WillByDefault(Return(2));
ON_CALL(*item, IsPaused()).WillByDefault(Return(false));
static const std::string guid = "test_guid";
ON_CALL(*item, GetGuid()).WillByDefault(ReturnRef(guid));
// Verify Resume is not called with destroyed item
EXPECT_CALL(*item, Resume(false)).Times(0);
handler_->OnDownloadUpdated(item.get());
// Reset item to simulate destruction
item.reset();
task_environment_.FastForwardBy(base::Minutes(1));
}
} // namespace download
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