node_modules/nodeunit/test/test-runtest.js

/*  THIS FILE SHOULD BE BROWSER-COMPATIBLE JS!
 *  You can use @REMOVE_LINE_FOR_BROWSER to remove code from the browser build.
 *  Only code on that line will be removed, its mostly to avoid requiring code
 *  that is node specific
 */

var nodeunit = require('../lib/nodeunit'); // @REMOVE_LINE_FOR_BROWSER


exports.testArgs = function (test) {
    test.ok(test.expect instanceof Function, 'test.expect');
    test.ok(test.done instanceof Function, 'test.done');
    test.ok(test.ok instanceof Function, 'test.ok');
    test.ok(test.same instanceof Function, 'test.same');
    test.ok(test.equals instanceof Function, 'test.equals');
    test.done();
};

exports.testDoneCallback = function (test) {
    test.expect(4);
    nodeunit.runTest('testname', exports.testArgs, {
        testDone: function (name, assertions) {
            test.equals(assertions.failures(), 0, 'failures');
            test.equals(assertions.length, 5, 'length');
            test.ok(typeof assertions.duration === "number");
            test.equals(name, 'testname');
        }
    }, test.done);
};

exports.testThrowError = function (test) {
    test.expect(3);
    var err = new Error('test');
    var testfn = function (test) {
        throw err;
    };
    nodeunit.runTest('testname', testfn, {
        log: function (assertion) {
            test.same(assertion.error, err, 'assertion.error');
        },
        testDone: function (name, assertions) {
            test.equals(assertions.failures(), 1);
            test.equals(assertions.length, 1);
        }
    }, test.done);
};