require("import")	-- the import fn
import("template_static")	-- import lib
ts=template_static

-- catch "undefined" global variables
local env = _ENV -- Lua 5.2
if not env then env = getfenv () end -- Lua 5.1
setmetatable(env, {__index=function (t,i) error("undefined global variable `"..i.."'",2) end})

assert(ts.foo_i.test == 0)
ts.foo_i.test = 42
assert(ts.foo_i.test == 42)
assert(ts.foo_i_test == 42)
ts.foo_i_test = 57
assert(ts.foo_i.test == 57)
assert(ts.foo_i_test == 57)
assert(ts.foo_d.test == 0)

assert(ts.Foo.bar_double(4) == 1.0)
assert(ts.Foo_bar_double(4) == 1.0)