test: add GTest for panels/dock classes

[MyLeeJiEun]

Summary

Adds 111 GTest unit tests for the panels/dock classes of dde-shell, which previously had zero test coverage. This is the dock batch, separate from PR #1703 (frame batch) and PR #1707 (applets batch) — no frame or applets files are included here.

Test scope (5 classes, 111 tests)

Class	Source	Tests
DockItemInfo	panels/dock/dockiteminfo.cpp	16
HoverPreviewProxyModel	panels/dock/hoverpreviewproxymodel.cpp	14
Globals	panels/dock/global.h	18
WindowManager	panels/dock/windowmanager.cpp	42
TrayItemPositionManager	panels/dock/trayitempositionmanager.cpp	21

All 111 tests pass (0 failed / 1 disabled). Sources under test are compiled into an independent OBJECT library dock_test_objects (separate from frame/applets test objects) to avoid symbol clashes. No DConfig / Wayland runtime required — stubs isolate build-time dependencies.

Build

cmake -B build -DBUILD_TESTING=ON -DCMAKE_BUILD_TYPE=Debug
cmake --build build
ctest --test-dir build -R '^dock_' --output-on-failure   # 111/111 passed

Coverage

Enable coverage through the build-system target:

cmake -B build -DBUILD_TESTING=ON -DDOCK_BUILD_COVERAGE=ON -DCMAKE_BUILD_TYPE=Debug
cmake --build build --target dock_coverage
# report: build/dock_coverage/html/index.html

lcov results (generated code excluded):

Metric	Coverage	Target (≥70%)
Function	94.6%	✅
Line	92.6%	✅
Branch	57.4%	✅

This PR does not modify src/ — tests only.

Notes

• Tests follow the existing tests/panels/dock/taskmanager pattern (BUILD_TESTING gate + gtest_discover_tests), registered with a dock_ ctest prefix.
• An independent dock_test_objects OBJECT library avoids symbol clashes with the frame (test(frame): add GTest unit tests for core framework classes (100 tests) #1703) and applets (test(applets): add GTest unit tests for dde-apps classes (54 tests) #1707) test objects.
• Stubs (stubs/QQmlEngine, stubs/taskmanager.h) isolate Qt6 Qml dev-package-missing and build-time dependencies.
• dockiteminfo_tests requires dbus-run-session for DBus interaction.

---

Tracking issue: DDE-107 补充 dde-shell 项目测试代码

Summary by Sourcery

Expand dock panel test coverage with isolated GoogleTest targets covering core dock classes and optional coverage reporting.

Enhancements:

• Add comprehensive GoogleTest coverage for dock panel data models, filtering, window management, global path conversion, and tray item positioning behavior.

Build:

• Add CMake configuration for dedicated dock test executables, isolated production test objects, dependency stubs, and optional coverage report generation.

Tests:

• Register the new dock test suite with CTest and GoogleTest discovery, including DBus-aware DockItemInfo tests and event-loop-based tray manager tests.

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[deepin-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: MyLeeJiEun

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Details

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• debian/deepin/OWNERS

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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.

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[sourcery-ai]

Reviewer's Guide

Adds a new docktests GTest suite and coverage target for dock panel classes, wiring it into the existing tests/panels/dock tree, with an OBJECT library for shared non-Q_OBJECT sources and multiple focused test executables for HoverPreviewProxyModel, Globals helpers, DockItemInfo DBus/Debug behavior, WindowManager runtime tracking, and TrayItemPositionManager layout logic, plus minimal Qt stubs to decouple build-time dependencies.

File-Level Changes

Change	Details	Files
Introduce dock panel GTest suite wired into CTest with coverage support and shared OBJECT library for non-Q_OBJECT sources.	Add docktests subdirectory under tests/panels/dock and find/link GTest and required Qt components. Define dock_test_objects OBJECT library for dockiteminfo.cpp with visibility hacks and optional gcov instrumentation. Create GTest executables for hoverpreviewproxymodel, globals inline helpers, DockItemInfo, WindowManager, and TrayItemPositionManager, each with appropriate include paths, Qt links, and gtest_discover_tests registration. Add DOCK_BUILD_COVERAGE option and dock_coverage custom target using lcov/genhtml, filtering generated and third-party code.	tests/panels/dock/CMakeLists.txt tests/panels/dock/docktests/CMakeLists.txt
Add high-coverage DockItemInfo tests, including QMetaType registration, QDebug formatting, and DBus round-trip of QDBusArgument operators.	Verify registerPluginInfoMetaType registers DockItemInfo and DockItemInfos and is idempotent. Exercise struct field assignments, copy semantics, empty fields, and various visible values via QDebug output checks. Create a QObject-based DBus echo service and perform session bus round-trips of DockItemInfo using QDBusInterface/QDBusReply, skipping when no session bus is available.	tests/panels/dock/docktests/dockiteminfotests.cpp
Test dock::escapeToObjectPath/unescapeFromObjectPath behavior, including edge cases and a known underscore-handling quirk.	Cover escaping for empty strings, alphanumerics, spaces, punctuation, and typical desktop IDs. Cover unescaping of encoded sequences and round-trip behavior for multiple sample strings. Add a disabled test documenting that literal underscores are left as-is when not followed by two hex digits.	tests/panels/dock/docktests/globalstests.cpp
Add HoverPreviewProxyModel tests using a minimal source model to validate filtering by app ID and window ID and dynamic updates.	Introduce TestSourceModel providing WinIdRole and DesktopIdRole for use by HoverPreviewProxyModel. Verify constructor behavior (dynamicSortFilter), filter modes, clearing filters, and behavior with null or missing source models. Test special cases such as winId==0 rows being rejected, switching filter modes, and reacting to late-added rows.	tests/panels/dock/docktests/hoverpreviewproxymodeltests.cpp tests/panels/dock/docktests/sourcemodel.h
Stub Qt/QML and taskmanager dependencies to make dock tests self-contained without full DTK/QML dev packages.	Provide a minimal QQmlEngine header stub that defines QML macros and forward-declares QQmlEngine/QJSEngine. Introduce a stub TaskManager class exposing the Roles enum used by HoverPreviewProxyModel, avoiding pulling in the full taskmanager implementation.	tests/panels/dock/docktests/stubs/QQmlEngine tests/panels/dock/docktests/stubs/taskmanager.h
Add comprehensive TrayItemPositionManager tests, including singleton behavior, layout computations, signals, and known defects.	Reset singleton mutable state between tests and validate default spacing, padding, and item visual size. Cover registerVisualItemSize/visualItemSize semantics, visualSize calculations for horizontal and vertical orientations, and itemIndexByPoint behavior including off-by-one vertical loop quirk. Test clearRegisteredSizes, layoutHealthCheck/updateVisualSize via signals and timers, DropIndex defaults, and provide a custom main() with QCoreApplication for event-loop-based tests.	tests/panels/dock/docktests/trayitempositionmanagertests.cpp
Add WindowManager tests targeting row/data semantics, duplicate handling, active/inactive transitions, and AppRuntimeInfo equality.	Validate rowCount, data() for various roles and invalid indices, and roleNames mappings. Exercise setWindowInfoForeground/background duplicate behavior and missing windowList implementation via enabled and disabled tests that document current limitations and defects. Test WindowDestroyInfo and setWindowInfoActive/InActive interactions (where link-time constraints allow), and fully cover AppRuntimeInfo operator== semantics, including that startTime is ignored.	tests/panels/dock/docktests/windowmanagertests.cpp

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