1 test_helper.js

exports = module.exports = global;

var path = require('path');
QUnit = require(path.join(path.dirname(require.resolve('qunit-tap')), '..', 'vendor', 'qunit', 'qunit', 'qunit')).QUnit;
require("qunit-tap").qunitTap(QUnit, require("sys").puts, { noPlan: true });

QUnit.init();
QUnit.config.updateRate = 0;
exports.assert = QUnit;

2 hoge.js

require('../test_helper.js');

QUnit.test('hoge', function() {
    setTimeout(function() {
        assert.ok(1);
    }, 100);
});

QUnit.start();

3 result

$ npm ls installed qunit-tap
npm info it worked if it ends with ok
npm info using npm@0.3.17
npm info using node@v0.4.4
qunit-tap@1.0.0   active installed   A TAP Output Producer Plugin for QUnit     TDD QUnit test tests testing TAP
npm ok
$ prove --ext=.js --exec=node
t/hoge.js .. skipped: (no reason given)

Test Summary Report
-------------------
t/hoge.js (Wstat: 0 Tests: 1 Failed: 1)
  Failed test:  1
  Parse errors: Bad plan.  You planned 0 tests but ran 1.
Files=1, Tests=1,  0 wallclock secs ( 0.02 usr  0.00 sys +  0.06 cusr  0.01 csys =  0.09 CPU)
Result: FAIL
$ node t/hoge.js
# test: hoge
1..0
ok 1