fixed gh-562 : added expected-to-fail test of lua finalizers table

test/box/finalizers.result

+Expected error: <type 'exceptions.OSError'>

test/box/finalizers.test.py

+import os
+import sys
+import re
+import yaml
+from lib.tarantool_server import TarantoolServer
+
+server = TarantoolServer(server.ini)
+server.script = 'box/lua/finalizers.lua'
+server.vardir = os.path.join(server.vardir, 'finalizers')
+try:
+    server.deploy()
+except:
+    print "Expected error:", sys.exc_info()[0]
+else:
+    print "Error! exception did not occured"
+
+

test/box/lua/finalizers.lua

+#!/usr/bin/env tarantool
+
+--# setopt delimiter ';'
+
+function on_gc(t)
+end;
+
+function test_finalizers()
+    local result = {}
+    local i = 1
+    local ffi = require('ffi')
+    while true do
+        result[i] = ffi.gc(ffi.cast('void *', NULL), on_gc)
+        i = i + 1
+    end
+    return "done"
+end;
+
+--# setopt delimiter ''
+
+test_finalizers()
+test_finalizers()
+