Re: Unit testing problem/question

["g.lister" <g.lister@...>]

On 09/28/2012 10:04 PM, Paul K wrote:
> Hi George,
>
> > It seems that I cannot require my own package and use my methods from it...
> > what I am doing wrong any clues?? I tried reading the examples but there is
> > nothing which requires an external module? Looked also on luaforge at the
> > other unit testing lib luaunit and it also has very basic examples.
>
> You didn't show what's inside your "log" module, so it's difficult to
> say, but if you are not using "module" call (and you shouldn't), then
> you probably need to assign the result of your require "log" call:
>
> local log = require "log"
>
> Paul.

I read this http://lua-users.org/wiki/LuaModuleFunctionCritiqued so I 
decided to go for a simple table module instead as I have no time to 
grasp what all that means, but the gist of it only -> that it is not so 
perfect to do just module("",) due to global scope polution etc. etc. 
lunit does use module BTW.

require "os"
log = {}
function log.debug(txt)
  print(os.date().." [DEBUG]: "..txt)
end
return log

I tried your suggestion at one point out of desperation :) ... prior to 
mailing the list but what the heck I gave it another shot same outcome:

gs@flipper:~/Lua/mystuff/tests$ lunit log_tests.lua
Starting testing of log lib ...
lua: log_tests.lua:6: attempt to call global 'require' (a nil value)
stack traceback:
	log_tests.lua:6: in function 'chunk'
	/home/gs/Lua/adopted/lunit/lunit.lua:628: in function 'loadtestcase'
	/home/gs/Lua/adopted/lunit/lunit.lua:657: in function 'main'
	stdin:11: in main chunk
	[C]: ?

I think it has to do with the way those functions are loaded by lunit 
(xpcall), but I find it hard to believe that a unit testing lib would 
let me test only stuff in the same file... so I tried setUp

function setUp()
  require "log"
end

same story:

gs@flipper:~/Lua/mystuff/tests$ lunit log_tests.lua
Starting testing of log lib ...
Loaded testsuite with 1 tests in 1 testcases.

    E

0 Assertions checked.

  1) Error! (log_tests.test_loglib:setUp):
log_tests.lua:7: attempt to call global 'require' (a nil value)
	log_tests.lua:7: in function <log_tests.lua:6>
	[C]: in function 'xpcall'
	(tail call): ?
	stdin:11: in main chunk
	[C]: ?

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>
> On Fri, Sep 28, 2012 at 12:50 PM, g.lister <g.lister@nodeunit.com> wrote:
> > Hi guys,
> >
> > I have another newbie question this time on unit testing.
> >
> > I am trying to use lunit and I am having a problem with this code:
> >
> > require "lunit"
> > require "log"
> > print("Starting testing of log lib ...");
> >
> > module( "log_tests", lunit.testcase )
> >
> > function test_loglib()
> >    assert_true(log ~= nil, "Log object must be defined!")
> >    assert_true(type(log.debug) == "function", "log.debug method must exist!")
> > end
> >
> > it blows up:
> >
> > gs@flipper:~/Lua/mystuff/db/files$ lunit ../../tests/log_tests.lua
> > Starting testing of log lib ...
> > Loaded testsuite with 1 tests in 1 testcases.
> >
> >      F
> >
> > 1 Assertions checked.
> >
> >    1) Failure (log_tests.test_loglib):
> > ../../tests/log_tests.lua:8: true expected but was false
> > ../../tests/log_tests.lua:8: Log object must be defined!
> >
> > It seems that I cannot require my own package and use my methods from it...
> > what I am doing wrong any clues?? I tried reading the examples but there is
> > nothing which requires an external module? Looked also on luaforge at the
> > other unit testing lib luaunit and it also has very basic examples.
> >
> > TIA
> > /george