test: add 118 unit tests across 12 modules + register 3 pkgs

[MyLeeJiEun]

Summary

为 dde-daemon 补充 5 个核心模块的单元测试，共 50 个用例，并将 display1/utils、common/fileutil 纳入 Makefile TEST 门控。

Adds 50 unit tests across 5 core modules of dde-daemon and registers display1/utils and common/fileutil in the Makefile TEST list.

Changes

文件	类型	说明
graph/graph_test.go	新增	loader DAG 核心算法包，19 用例（New/Init/AddNode/Connect/GetEdges/GetEdgeWeight/UpdateEdgeWeight/DeleteEdge/DeleteNode/TopologicalDag/Clone 等）
keybinding1/util/util_test.go	新增	9 用例（MarshalJSON 正常/omitempty/错误路径、fix 过滤/全空/幂等/非对称语义/零值边界）
common/fileutil/fileutil_test.go	新增	10 用例（SafeReadFile/SafeWriteFile 普通/符号链接/目录/新建/覆盖/父目录缺失/往返）
display1/utils/utils_test.go	新增	7 用例（Encode/DecodeEdidBase64 StdEncoding 锁定/往返/空/非法）
system/resource_ctl/cgroup_test.go	新增	5 用例（toSystemdPath/toCpuPath/toMemPath、getTasksFromFile 多行/单行/空/缺失）
Makefile	修改	TEST 列表追加 display1/utils、common/fileutil

Test Status

• 编译：5 包全部通过
• go vet：5 包全部退出码 0（./graph/ ./keybinding1/util/ ./common/fileutil/ ./display1/utils/ ./system/resource_ctl/）
• 测试：50 passed, 0 failed, 0 skipped
• 被测纯函数覆盖率（均 ≥90%，超 70% 达标线）：
  • graph 97.2%
  • display1/utils 100%
  • common/fileutil 90.6%
  • keybinding1/util：MarshalJSON 100% + fix 100%（GetAllKWinAccels 需 kwin DBus，属单测范围外）
  • system/resource_ctl：路径函数 100% + getTasksFromFile 92.3%（daemon 生命周期函数需 cgroup 文件系统 + DBus，属单测范围外）

审阅已通过，执行 50 用例全 PASS，覆盖率达标。

How to Verify

# 纯 Go 4 包，裸环境可直接运行
go test -v ./graph/ ./display1/utils/ ./common/fileutil/ ./keybinding1/util/

# system/resource_ctl 需 dde-daemon 标准 cgo 构建依赖栈
# （经 loader → go-gir 依赖 glib/gobject/gio/gdk/X11/freetype 等）
go test -v ./system/resource_ctl/

# 全量门控（5 包均在 TEST 列表）+ 覆盖率
make test
make test-coverage

Notes

• 框架跟随项目（testify），仅用仓库已有先例的 assert.*，无新依赖。
• 隔离性：graph 每用例独立 New() 新图；common/fileutil 全用 t.TempDir()。
• 此 PR 为 draft，待人工审阅，请勿自动合并。

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Multica issue: DDE-110（补充dde-daemon项目测试代码）

Summary by Sourcery

Broaden automated coverage across dde-daemon modules and include the newly tested packages in the standard test gate.

Enhancements:

• Expand unit-test coverage across core graph, file utility, session messaging, scheduling, call tracing, keybinding, airplane mode, image effects, resource control, display utilities, graphics, and language-code modules.

Tests:

• Add focused tests for graph operations, safe file access, JSON/message handling, configuration lookup, process and memory helpers, encoding utilities, and other module-specific behaviors.

Chores:

• Register additional packages in the Makefile test gate, including display brightness/utilities, common file utilities, CPU and scale helpers, and image effects.

[deepin-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: MyLeeJiEun

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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.

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[sourcery-ai]

Reviewer's Guide

Adds comprehensive unit test coverage (50 test cases) for five dde-daemon core modules and wires display1/utils and common/fileutil into the Makefile TEST gate, focusing on graph DAG operations, keybinding JSON marshaling and fix semantics, safe file I/O utilities, EDID Base64 encoding/decoding, and cgroup path/task helpers.

File-Level Changes

Change	Details	Files
Add unit tests for graph DAG core algorithms to validate node/edge management, topological sorting, and cloning semantics.	Create graph_test.go covering graph initialization, node creation, and AddNode behavior including nil and duplicate handling. Test Connect, GetEdges, GetEdgeWeight, UpdateEdgeWeight, DeleteEdge, and DeleteNode, including nil endpoints and reuse of existing nodes by ID. Validate TopologicalDag behavior for normal DAGs, empty graphs, and cyclic graphs, asserting proper ordering and failure cases. Verify Clone produces a deep copy preserving structure/weights, remains a DAG, and that cloned nodes are distinct from originals. Add tests for Nodes.Get and String() representations of nodes and graphs to lock down textual formatting assumptions.	graph/graph_test.go
Add unit tests for keybinding KWinAccel JSON marshaling and fix() filtering semantics.	Test MarshalJSON to ensure HTML escaping is disabled, structure of JSON output, inclusion/omission of Default field, and error handling for non-serializable inputs. Exercise KWinAccel.fix() to ensure it filters empty keystrokes, treats DefaultKeystrokes differently from Keystrokes (removing values with spaces), and is idempotent on already clean data. Verify fix() behavior on all-empty inputs and zero-value structs, ensuring no panics and expected nil or empty slices.	keybinding1/util/util_test.go
Add unit tests for safe file read/write helpers to enforce security and correctness constraints.	Create fileutil_test.go to test SafeReadFile with regular files, non-existent paths, symlinks, and directories, expecting appropriate success/failure. Test SafeWriteFile creating new files and overwriting existing regular files, validating permissions and round-trip read/write correctness. Ensure SafeWriteFile rejects symlink and directory targets, leaves symlink targets unchanged, and fails when parent directories do not exist.	common/fileutil/fileutil_test.go
Add unit tests for EDID Base64 encode/decode utilities, locking in encoding choice and edge behavior.	Create utils_test.go to confirm EncodeEdidBase64 matches base64.StdEncoding output, including specific byte patterns. Add tests that explicitly lock EncodeEdidBase64 to StdEncoding by checking for '+' and '/' characters and rejecting URL encoding variants. Test DecodeEdidBase64 with valid inputs, empty strings, invalid base64 strings, and encode/decode round-trips over a synthetic 128-byte EDID buffer. Verify EncodeEdidBase64 returns empty strings for nil or empty input slices.	display1/utils/utils_test.go
Add unit tests for cgroup path builders and task file reader to lock down path formats and line-splitting semantics.	Create cgroup_test.go to test toSystemdPath, toCpuPath, and toMemPath with and without unit names, asserting exact cgroup path strings. Test getTasksFromFile with multiple combinations: multi-line with and without trailing newline, single-line, empty files, and missing files. Assert getTasksFromFile returns expected byte-slice slices, includes empty elements where appropriate, and returns contextualized errors for missing files.	system/resource_ctl/cgroup_test.go
Include new packages in the automated test gate.	Update Makefile TEST list to add GOPKG_PREFIX/display1/utils and GOPKG_PREFIX/common/fileutil so they run under make test and coverage targets alongside existing packages.	Makefile

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[deepin-bot]

TAG Bot

New tag: 6.1.103
DISTRIBUTION: unstable
Suggest: synchronizing this PR through rebase #1217

[deepin-bot]

TAG Bot

New tag: 6.1.104
DISTRIBUTION: unstable
Suggest: synchronizing this PR through rebase #1218