foo-tests.js
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"use strict";
/*jshint asi:true*/
/*global describe before beforeEach after afterEach it */
/*
* These examples demonstrate how to use proxyquire with Sinon.JS (<http://sinonjs.org/>).
* Run these tests with mocha (<http://visionmedia.github.com/mocha/>).
* e.g., mocha foo-tests.js
*/
var proxyquire = require('../..')
, sinon = require('sinon')
, assert = require('assert')
, fs = require('fs')
, path = require('path')
, foo
;
// Stubbing return values
describe('when path.extname(file) returns ".markdown"', function () {
var extnameStub
, file = 'somefile';
before(function () {
extnameStub = sinon.stub(path, 'extname');
foo = proxyquire('./foo', { path: { extname: extnameStub } } );
extnameStub.withArgs(file).returns('.markdown');
})
after(function () {
path.extname.restore();
});
it('extnameAllCaps returns ".MARKDOWN"', function () {
assert.equal(foo.extnameAllCaps(file), '.MARKDOWN');
})
})
// Stubbing callbacks
describe('when fs.readdir calls back with ["file1", "file2"]', function () {
var readdirStub;
before(function () {
readdirStub = sinon.stub(fs, 'readdir');
foo = proxyquire('./foo', { fs: { readdir: readdirStub } } );
readdirStub.withArgs('../simple').yields(null, [ 'file1', 'file2' ]);
})
after(function () {
fs.readdir.restore();
});
it('filesAllCaps calls back with ["FILE1", "FILE2"]', function (done) {
foo.filesAllCaps('../simple', function (err, files) {
assert.equal(err, null);
assert.equal(files[0], 'FILE1');
assert.equal(files[1], 'FILE2');
done();
});
})
})
describe('when fs.readdir returns an error', function () {
var readdirError
, readdirStub;
before(function () {
readdirStub = sinon.stub(fs, 'readdir');
foo = proxyquire('./foo', { fs: { readdir: readdirStub } } );
readdirError = new Error('some error');
readdirStub.withArgs('../simple').yields(readdirError, null);
})
after(function () {
fs.readdir.restore();
});
it('filesAllCaps calls back with that error', function (done) {
foo.filesAllCaps('../simple', function (err, files) {
assert.equal(err, readdirError);
assert.equal(files, null);
done();
});
})
})
// Spying
describe('when calling filesAllCaps with "../simple"', function () {
var readdirSpy;
before(function () {
readdirSpy = sinon.spy(fs, 'readdir');
foo = proxyquire('./foo', { fs: { readdir: readdirSpy } } );
})
after(function () {
fs.readdir.restore();
});
it('calls fs.readdir with "../simple"', function (done) {
foo.filesAllCaps('../simple', function (err, files) {
assert(fs.readdir.calledOnce);
assert.equal(fs.readdir.getCall(0).args[0], '../simple');
done();
});
})
})