test: 补充 dde-launchpad 单元测试

[MyLeeJiEun]

补充 dde-launchpad 单元测试

关联 Multica 任务: DDE-109 (补充 dde-launchpad 项目测试代码)

变更内容

• 新增 14 个 Qt6 单元测试文件，覆盖 src/models 和 src/utils 核心模块
• 扩展已有的 itemspage 和 searchfilter 代理模型测试
• 更新 tests/CMakeLists.txt，注册全部 15 个测试 target 并启用 gcov 覆盖率编译选项
• 共 15 个文件变更，2903 行新增

测试与覆盖率

• 15 个测试 target 全部编译通过，185 条用例全部通过（0 失败）
• 覆盖率（过滤生成代码后）：行 72.0% / 函数 86.1%（达标），分支 36.3%（参考项）
• 覆盖率报告详见 Multica DDE-109 附件

验证方式

cmake -B build -DBUILD_TEST=ON
cmake --build build
ctest --test-dir build --output-on-failure

Summary by Sourcery

Expand dde-launchpad’s Qt6 unit-test suite and coverage instrumentation across core models and utilities.

Enhancements:

• Expand unit-test coverage for core dde-launchpad models and utility modules, including sorting, filtering, arrangement, favorites, categories, icons, and blurhash behavior.
• Configure tested source modules as instrumented test dependencies so coverage data is collected reliably during test execution.

Build:

• Register 15 Qt6 unit-test targets and add the required Qt and private Qt dependencies for testing.

Tests:

• Add comprehensive Qt6 tests for model and utility behavior, and extend existing ItemsPage and search/filter proxy model tests.

[deepin-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: MyLeeJiEun

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Details

Needs approval from an approver in each of these files:

• debian/deepin/OWNERS

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[deepin-ci-robot]

Hi @MyLeeJiEun. Thanks for your PR.

I'm waiting for a linuxdeepin member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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[sourcery-ai]

Reviewer's Guide

This PR adds a comprehensive Qt6 unit test suite for dde-launchpad core models and utils, and reworks the tests build to compile target source files as OBJECT libraries for accurate gcov coverage collection.

File-Level Changes

Change	Details	Files
Rework tests CMake configuration to build core models/utils as OBJECT libraries and link them directly into test executables for gcov coverage.	Add Qt6 Gui/Qml/Svg and Qt6CorePrivate dependencies required by the tested source files. Introduce launchpad-test-models OBJECT library including src/models/* core proxy and page models. Introduce launchpad-test-utils OBJECT library including src/utils/* helpers such as blurhash, categoryutils, and iconutils. Update launchpad_add_tests macro to link OBJECT libs, gio-utils, and launchpadcommon to each test target. Register 15 test executables in launchpad_add_tests, covering models and utils modules.	tests/CMakeLists.txt
Add unit tests for utils blurhash and categoryutils to validate encoding/decoding behavior and category mapping logic.	Implement blurhashtest with encode/decode path coverage including invalid input, hash length expectations, round-trip color preservation, and bytesPerPixel variations. Implement categoryutilstest to cover DDE and XDG category parsing, bestMatchedCategory heuristics, tie-breaking rules, and mixed known/unknown inputs. Use QLoggingCategory in tests for traceability of individual test scenarios.	tests/blurhashtest.cpp tests/categoryutilstest.cpp
Add unit tests for proxy models that implement row limiting, favorites, free sort, frequently-used logic, and recently-installed filtering.	Test CountLimitProxyModel maxRowCount semantics, signal emission, source row insertion/removal interactions, and source model lifecycle behavior. Exercise FavoritedProxyModel singleton behavior: exists/add/remove/pinToTop, disk-backed favorited.ini cleanup, filtering to favorited apps only, and ordering by favorites list position. Verify FreeSortProxyModel sorting by ItemArrangementProxyModel page/index roles, descending order support, and default handling when roles are missing. Verify FrequentlyUsedProxyModel filtering against a recentlyInstalledModel, multi-criteria lessThan (launchedTimes, lastLaunchedTime, frequently-used list), QML lifecycle hooks, and property-based role configuration. Test RecentlyInstalledProxyModel filtering of never-launched installed apps, ascending/descending order by installed time, and componentComplete default sort.	tests/countlimitproxymodeltest.cpp tests/favoritedproxymodeltest.cpp tests/freesortproxymodeltest.cpp tests/frequentlyusedproxymodeltest.cpp tests/recentlyinstalledproxymodeltest.cpp
Add tests for item arrangement and paging models, validating ItemsPage, ItemArrangementProxyModel, and ItemsPageModel behavior.	Extend itemspagetest to cover item search/containment, naming, item counts, firstNItems/allArrangedItems, removal by membership, empty-page handling, auto page creation, cross-page moves, and insertion with auto-selected page. Add itemarrangementproxymodeltest to validate initial setup from AppsModel, page and folder roles, ItemType and IconsName behavior, allArrangedItems contents, bringToFront semantics, DnD commit edge cases, empty page creation/removal, and disk config cleanup. Add itemspagemodeltest to test sourceModel wiring to ItemArrangementProxyModel, rowCount behavior, response to pageAdded/pageRemoved signals, and null/same source model guard paths.	tests/itemspagetest.cpp tests/itemarrangementproxymodeltest.cpp tests/itemspagemodeltest.cpp
Add tests for multipage and categorized sorting behavior over item-arrangement metadata and search categories.	Add multipagesortfilterproxymodeltest to verify filtering by folderId and pageId, behavior when no matches exist, filterOnlyMode semantics, and the requirement to invalidate() to see filterOnlyMode-based sort changes. Extend searchfilterproxymodeltest to exercise CategorizedSortProxyModel alphabetarySections, DDECategorySections, categoryType transitions, and sortRoleName mapping for different category types.	tests/multipagesortfilterproxymodeltest.cpp tests/searchfilterproxymodeltest.cpp
Add a comprehensive test suite for SortProxyModel itself, covering sorting, mapping, dataChanged handling, and edge cases.	Implement sortproxymodeltest to validate ascending/descending sort, source/proxy index mappings, case sensitivity, custom sort roles, insertion/removal behavior, model reset, multi-row removal, and properties sortColumn/sortOrder/sortRole/sortCaseSensitivity. Introduce a ControllableStringListModel helper to isolate handleDataChanged behavior for empty roles vs specific roles and confirm reorder triggers only when expected. Add tests for invalid index handling (index/data/mapToSource/mapFromSource) and columnCount with/without source model.	tests/sortproxymodeltest.cpp
Add tests for icon sizing and SVG loading utilities.	Implement iconutilstest to cover perfectIconSize and perfectIconSizeReverse behavior (rounding up/down, boundary conditions), folder icon cell calculation for various sizes and counts, and loadSvg behavior for nonexistent files via both QSize and int overloads.	tests/iconutilstest.cpp

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