Trying to test a function exported from a nodejs file, I am utilizing q to manage promises. The function returns a promise that is either resolved or rejected internally through a callback. Within this callback, another function from a different location is called, which returns yet another promise. Once the second promise completes, the returned promise is resolved or rejected accordingly.
During testing, I want to mock the second function by using "rewire" to pass a stub from "sinon" that returns a promise, manually resolving it in the test.
However, when attempting to mock this function, an error occurs: SyntaxError: Unexpected token .
This issue is happening on a Windows 7 system.
Is there something missing with the rewire module?
Error:
1) Calls the createConfFiles just once
1 passing (113ms)
1 failing
1) Setup scripts management configuration on current dir based on user inputs:
SyntaxError: Unexpected token .
at Function.__set__ (D:\path\to\file.js:102:19)
at Context.<anonymous> (D:\path\to\test.js:47:21)
at callFnAsync (D:\path\to\node_modules\mocha\lib\runnable.js:306:8)
...more stack trace...
···
npm ERR! Test failed. See above for more details.
Test file:
var expect = require('chai').expect;
var sinon = require('sinon');
var rewire = require('rewire');
var Q = require('q');
var inquirers = require('./mocks.js').inquirers;
var Scripts;
describe('Setup scripts management configuration on current dir based on user inputs', function () {
var createConfigFiles;
var defer;
describe('Call once the createConfFiles function', function () {
before(function () {
Scripts = rewire('./scripts.js');
});
it('Calls the createConfFiles just once', function (done) {
defer = Q.defer();
createConfigFiles = sinon.stub().returns(defer.promise);
Scripts.__set__({
'inquirer': inquirers.buildScripts,
'./createConfigFiles.js': createConfigFiles
});
Scripts().then(function (result) {
expect(result).to.equal("Yes");
expect(createConfigFiles.calledOnce).to.be.true;
done();
}).done();
defer.resolve(true);
});
});
});
Tested function:
function init() {
process.stdout.write('\nScripts\n');
inquirer.prompt(question, function (answer) {
if (answer.scripts === choices[0]) {
Q.when(createScriptsConfFile(ioOptions))
.then(function (result) {
defer.resolve(choices[0]);
}, function (error) {
defer.reject(error);
}).done();
} else {
defer.reject(answer.scripts);
}
});
return defer.promise;
};
// exported as recommended here https://github.com/jhnns/rewire/issues/22
module.exports = init;