tools/ci: add test case for convert_to_cmake script

Following issue was already fixed with earlier commit-id f4cfca4353
Here additional build test case is added and marking issue as closed.

Closes: https://github.com/espressif/esp-idf/issues/2660

tools/ci/test_build_system_cmake.sh

@@ -258,6 +258,14 @@ function run_tests()
     mv ${IDF_PATH}/components/esp32/toolchain-esp32.cmake ${IDF_PATH}/tools/cmake/
     assert_built ${APP_BINS} ${BOOTLOADER_BINS} ${PARTITION_BIN}
 
+    print_status "Can build with auto generated CMakeLists.txt"
+    clean_build_dir
+    mv CMakeLists.txt CMakeLists.bak
+    ${IDF_PATH}/tools/cmake/convert_to_cmake.py .
+    idf.py build || failure "Auto generated CMakeLists.txt build failed"
+    mv CMakeLists.bak CMakeLists.txt
+    assert_built ${APP_BINS} ${BOOTLOADER_BINS} ${PARTITION_BIN}
+
     print_status "All tests completed"
     if [ -n "${FAILURES}" ]; then
         echo "Some failures were detected:"