tests: Set env variables in RunTests.cmake

- NVIM_RPLUGIN_MANIFEST
- XDG_CONFIG_HOME
- XDG_DATA_HOME

cmake/RunTests.cmake

@@ -2,6 +2,9 @@ get_filename_component(BUSTED_DIR ${BUSTED_PRG} PATH)
 set(ENV{PATH} "${BUSTED_DIR}:$ENV{PATH}")
 
 set(ENV{VIMRUNTIME} ${WORKING_DIR}/runtime)
+set(ENV{NVIM_RPLUGIN_MANIFEST} ${WORKING_DIR}/Xtest_rplugin_manifest)
+set(ENV{XDG_CONFIG_HOME} ${WORKING_DIR}/Xtest_xdg/config)
+set(ENV{XDG_DATA_HOME} ${WORKING_DIR}/Xtest_xdg/share)
 
 if(NVIM_PRG)
   set(ENV{NVIM_PROG} "${NVIM_PRG}")
@@ -34,6 +37,9 @@ execute_process(
   RESULT_VARIABLE res
   ${EXTRA_ARGS})
 
+file(REMOVE ${WORKING_DIR}/Xtest_rplugin_manifest)
+file(REMOVE_RECURSE ${WORKING_DIR}/Xtest_xdg)
+
 if(NOT res EQUAL 0)
   message(STATUS "Output to stderr:\n${err}")
   message(FATAL_ERROR "Running ${TEST_TYPE} tests failed with error: ${res}.")

test/functional/helpers.lua

@@ -241,6 +241,7 @@ local function clear(...)
         'ASAN_OPTIONS',
         'LD_LIBRARY_PATH', 'PATH',
         'NVIM_LOG_FILE',
+        'NVIM_RPLUGIN_MANIFEST',
       }) do
         env_tbl[k] = os.getenv(k)
       end