parallel_download_job_unittest.cc | Explore in Territory

// Copyright 2017 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/internal/common/parallel_download_job.h"

#include <utility>
#include <vector>

#include "base/functional/bind.h"
#include "base/run_loop.h"
#include "base/test/mock_callback.h"
#include "base/test/task_environment.h"
#include "components/download/internal/common/parallel_download_utils.h"
#include "components/download/public/common/download_create_info.h"
#include "components/download/public/common/download_destination_observer.h"
#include "components/download/public/common/download_file_impl.h"
#include "components/download/public/common/download_task_runner.h"
#include "components/download/public/common/mock_download_item.h"
#include "components/download/public/common/mock_input_stream.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"

_;
NiceMock;
Return;
ReturnRef;
StrictMock;

namespace download {

namespace {

class MockDownloadDestinationObserver : public DownloadDestinationObserver { … };

}  // namespace

class ParallelDownloadJobForTest : public ParallelDownloadJob { … };

class ParallelDownloadJobTest : public testing::Test { … };

// Test if parallel requests can be built correctly for a new download without
// existing slices.
TEST_F(ParallelDownloadJobTest, CreateNewDownloadRequestsWithoutSlices) { … }

TEST_F(ParallelDownloadJobTest, CreateNewDownloadRequestsWithSlices) { … }

// Ensure that in download resumption, if the first hole is filled before
// sending multiple requests, the new requests can be correctly calculated.
TEST_F(ParallelDownloadJobTest, CreateResumptionRequestsFirstSliceFilled) { … }

// Simulate an edge case that we have one received slice in the middle. The
// parallel request should be created correctly.
// This may not happen under current implementation, but should be also handled
// correctly.
TEST_F(ParallelDownloadJobTest, CreateResumptionRequestsTwoSlicesToFill) { … }

// Verifies that if the last received slice is finished, we don't send an out
// of range request that starts from the last byte position.
TEST_F(ParallelDownloadJobTest, LastReceivedSliceFinished) { … }

// Pause, cancel, resume can be called before or after the worker establish
// the byte stream.
// These tests ensure the states consistency between the job and workers.

// Ensure cancel before building the requests will result in no requests are
// built.
TEST_F(ParallelDownloadJobTest, EarlyCancelBeforeBuildRequests) { … }

// Test that parallel request is not created if the remaining content can be
// finish downloading soon.
TEST_F(ParallelDownloadJobTest, RemainingContentWillFinishSoon) { … }

// Test that parallel request is not created until download file is initialized.
TEST_F(ParallelDownloadJobTest, ParallelRequestNotCreatedUntilFileInitialized) { … }

// Interruption from IO thread after the file initialized and before building
// the parallel requests, should correctly stop the download.
TEST_F(ParallelDownloadJobTest, InterruptOnStartup) { … }

// Test that if all slices are completed before forking the parallel requests,
// no parallel requests should be created.
TEST_F(ParallelDownloadJobTest,
       AllSlicesFinishedBeforeForkingParallelRequests) { … }

}  // namespace download
chromium/components/download/internal/common/parallel_download_job_unittest.cc
