node.js - How to include required files in Istanbul that are not in same directory as test case? -

i'm trying simple, it's not working.. must doing dumb.

i using istanbul mocha code coverage + unit testing.

in code being tested, using functions modules being require'd, , want imported modules included in code coverage - it's not.

i explicitly including library require full path (it not same dir test case resides)

var d = require(srcroot + '/scripting/wf_daemon/daemon_lib'); 

and later, test case making call function in module startworkflow.

d.startworkflow(workflow, function (msg) { // }) 

however, istanbul not go referenced function startworkflow, gives me coverage test file.

what need code coverage extend functions modules require'd test case.

i calling istanbul this:

istanbul cover --include-all-source --dir c:\build\buildarea --print none "c:\program files\nodejs\node_modules\mocha/bin/_mocha" -- --reporter mocha-teamcity-reporter ./test.js 

is there way istanbul instrument files not in directory (or subdirectories) test case resides? simple mistake making?

cheers!