Fix unit tests

Apparently busted 1.11.0 is broken(https://github.com/Olivine-Labs/busted/issues/236)
in a way that is causing the unit tests to fail. This pins the version to 1.10.0
and also fixes a wrong variable set when msgpack was added as a dependency

CMakeLists.txt

@@ -135,7 +135,7 @@ if(BUSTED_PRG)
   add_custom_target(unittest
     COMMAND ${CMAKE_COMMAND}
       -DBUSTED_PRG=${BUSTED_PRG}
-      -DLUAJIT_PRG=${LUAJIT_PRG}
+      -DLUA_PRG=${LUA_PRG}
       -DWORKING_DIR=${CMAKE_CURRENT_SOURCE_DIR}
       -DNVIM_TEST_LIB=${NVIM_TEST_LIB}
       -DBUSTED_OUTPUT_TYPE=${BUSTED_OUTPUT_TYPE}

cmake/RunUnittests.cmake

@@ -4,8 +4,7 @@ set(ENV{NVIM_TEST_LIB} ${NVIM_TEST_LIB})
 set(ENV{TEST_INCLUDES} ${TEST_INCLUDES})
 
 execute_process(
-  COMMAND ${BUSTED_PRG} -l ${LUAJIT_PRG} -o ${BUSTED_OUTPUT_TYPE}
-    --pattern=.moon ${TEST_DIR}
+  COMMAND ${BUSTED_PRG} -o ${BUSTED_OUTPUT_TYPE} --pattern=.moon ${TEST_DIR}
   WORKING_DIRECTORY ${WORKING_DIR}
   RESULT_VARIABLE res)
 

third-party/CMakeLists.txt

@@ -158,7 +158,7 @@ if(USE_BUNDLED_LUAROCKS)
   # instances running in parallel.  So we depend on moonscript to force it
   # to be serialized.
   add_custom_command(OUTPUT ${DEPS_BIN_DIR}/busted
-    COMMAND ${DEPS_BIN_DIR}/luarocks ARGS install busted
+    COMMAND ${DEPS_BIN_DIR}/luarocks ARGS install busted 1.10.0
             --server=http://rocks.moonscript.org
     DEPENDS moonscript)
   add_custom_target(busted