add build test option for cmake (#19608)

* add build test option for cmake

* configure build test option for cmake

Author: deflinhec

Diff for: CMakeLists.txt

@@ -41,6 +41,9 @@ AssureOutOfSourceBuilds()
 # works before build libcocos2d
 include(CocosBuildSet)
 
+# build options
+option(BUILD_TESTS "Build tests" ON)
+
 # default tests include lua, js test project, so we set those option on to build libs
 set(BUILD_LUA_LIBS ON)
 set(BUILD_JS_LIBS ON)
@@ -50,8 +53,10 @@ add_subdirectory(${COCOS2DX_ROOT_PATH}/cocos ${ENGINE_BINARY_PATH}/cocos/core)
 # prevent tests project to build "cocos2d-x/cocos" again
 set(BUILD_ENGINE_DONE ON)
 # add engine all tests project
-add_subdirectory(${COCOS2DX_ROOT_PATH}/tests/cpp-empty-test ${ENGINE_BINARY_PATH}/tests/cpp-empty-test)
-add_subdirectory(${COCOS2DX_ROOT_PATH}/tests/cpp-tests ${ENGINE_BINARY_PATH}/tests/cpp-tests)
-add_subdirectory(${COCOS2DX_ROOT_PATH}/tests/js-tests/project ${ENGINE_BINARY_PATH}/tests/js-tests)
-add_subdirectory(${COCOS2DX_ROOT_PATH}/tests/lua-empty-test/project ${ENGINE_BINARY_PATH}/tests/lua-empty-test)
-add_subdirectory(${COCOS2DX_ROOT_PATH}/tests/lua-tests/project ${ENGINE_BINARY_PATH}/tests/lua-test)
+if (BUILD_TESTS)
+  add_subdirectory(${COCOS2DX_ROOT_PATH}/tests/cpp-empty-test ${ENGINE_BINARY_PATH}/tests/cpp-empty-test)
+  add_subdirectory(${COCOS2DX_ROOT_PATH}/tests/cpp-tests ${ENGINE_BINARY_PATH}/tests/cpp-tests)
+  add_subdirectory(${COCOS2DX_ROOT_PATH}/tests/js-tests/project ${ENGINE_BINARY_PATH}/tests/js-tests)
+  add_subdirectory(${COCOS2DX_ROOT_PATH}/tests/lua-empty-test/project ${ENGINE_BINARY_PATH}/tests/lua-empty-test)
+  add_subdirectory(${COCOS2DX_ROOT_PATH}/tests/lua-tests/project ${ENGINE_BINARY_PATH}/tests/lua-test)
+endif()