Initial QSfera import

Desktop/test/qsfera_add_test.cmake

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+include(OCApplyCommonSettings)
+find_package(Qt6 COMPONENTS Test REQUIRED)
+
+include(ECMAddTests)
+
+function(qsfera_add_test test_class)
+    set(OC_TEST_CLASS ${test_class})
+    string(TOLOWER "${OC_TEST_CLASS}" OC_TEST_CLASS_LOWERCASE)
+    set(SRC_PATH test${OC_TEST_CLASS_LOWERCASE}.cpp)
+    if (IS_DIRECTORY  ${CMAKE_CURRENT_SOURCE_DIR}/test${OC_TEST_CLASS_LOWERCASE}/)
+        set(SRC_PATH test${OC_TEST_CLASS_LOWERCASE}/${SRC_PATH})
+    endif()
+    ecm_add_tests(${SRC_PATH}
+        LINK_LIBRARIES
+        QSferaGui syncenginetestutils testutilsloader Qt::Test
+        TARGET_NAMES_VAR _test_target_name
+    )
+    apply_common_target_settings(${_test_target_name})
+    target_compile_definitions(${_test_target_name} PRIVATE SOURCEDIR="${PROJECT_SOURCE_DIR}" QT_FORCE_ASSERTS)
+
+    # Depend on qsfera to ensure the plugins are up to date.
+    add_dependencies(${_test_target_name} qsfera)
+    add_dependencies(${_test_target_name} test_helper)
+
+    target_include_directories(${_test_target_name} PRIVATE "${CMAKE_SOURCE_DIR}/test/")
+    if ((UNIX AND NOT APPLE) OR WIN32)
+        set_property(TEST ${_test_target_name} PROPERTY ENVIRONMENT "QT_QPA_PLATFORM=offscreen;QT_LOGGING_RULES=*=true")
+    endif()
+endfunction()