fix: CMake Test 依赖改为可选，解决无 Qt6 Test 包环境构建失败

CMakeLists.txt

@@ -6,7 +6,10 @@ set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_AUTOMOC ON)
 
-find_package(Qt6 REQUIRED COMPONENTS Core Quick DBus Network LinguistTools Test)
+find_package(Qt6 REQUIRED COMPONENTS Core Quick DBus Network LinguistTools)
+# Test 仅用于单元测试目标，非主插件依赖；将其设为可选，
+# 避免未安装 Qt6 Test 开发包的环境构建主插件时失败
+find_package(Qt6 OPTIONAL_COMPONENTS Test)
 find_package(Dtk6 REQUIRED COMPONENTS Core)
 find_package(DDEShell REQUIRED)
 
@@ -68,6 +71,9 @@ install(DIRECTORY package/components DESTINATION /usr/share/dde-shell/${PLUGIN_I
 install(FILES ${QM_FILES} DESTINATION /usr/share/dde-shell/${PLUGIN_ID}/translations)
 
 # ---- 单元测试 ----
+# 仅当 Qt6 Test 组件存在时才构建测试目标
+# 设计原因：Test 为可选组件，未安装 Qt6 Test 开发包的环境仍应能正常构建主插件
+if(TARGET Qt6::Test)
     # 直接编译源文件到测试可执行文件，避免共享库依赖问题
     enable_testing()
     add_executable(tst_networkmonitorapplet
@@ -93,3 +99,4 @@ target_compile_definitions(tst_networkmonitorapplet PRIVATE
         TRANSLATIONS_DIR="${CMAKE_CURRENT_SOURCE_DIR}/translations"
     )
     add_test(NAME tst_networkmonitorapplet COMMAND tst_networkmonitorapplet)
+endif()