var expect = require("expect.js"),
    qrcode = require('./../lib/main'),
    sinon = require("sinon");

describe('in the main module', function() {
    describe("the generate method", function () {
        describe("when not providing a callback", function () {
            beforeEach(function () {
                sinon.stub(console, "log");
            });

            afterEach(function () {
                sinon.sandbox.restore();
                console.log.reset();
            });

            it("logs to the console", function () {
                qrcode.generate("test");
                expect(console.log.called).to.be(true);
            });
        });

        describe("when providing a callback", function () {
            it("will call the callback", function () {
                var cb = sinon.spy();
                qrcode.generate("test", cb);
                expect(cb.called).to.be(true);
            });

            it("will not call the console.log method", function () {
                qrcode.generate("test", sinon.spy());
                expect(console.log.called).to.be(false);
            });
        });

        describe("the QR Code", function () {
            it("should be a string", function (done) {
                qrcode.generate("test", function(result) {
                    expect(result).to.be.a('string');
                    done();
                });
            });

            it("should not end with a newline", function (done) {
                qrcode.generate("test", function(result) {
                    expect(result).not.to.match(/\n$/);
                    done();
                });
            });
        });
    });
});

var expect = require('expect.js'),
    qrcode = require('./../lib/main'),
    sinon = require('sinon');

describe('in the main module', function() {
    describe('the generate method', function () {
        describe('when not providing a callback', function () {
            beforeEach(function () {
                sinon.stub(console, 'log');
            });

            afterEach(function () {
                sinon.sandbox.restore();
                console.log.reset();
            });

            it('logs to the console', function () {
                qrcode.generate('test');
                expect(console.log.called).to.be(true);
            });
        });

        describe('when providing a callback', function () {
            it('will call the callback', function () {
                var cb = sinon.spy();
                qrcode.generate('test', cb);
                expect(cb.called).to.be(true);
            });

            it('will not call the console.log method', function () {
                qrcode.generate('test', sinon.spy());
                expect(console.log.called).to.be(false);
            });
        });

        describe('the QR Code', function () {
            it('should be a string', function (done) {
                qrcode.generate('test', function(result) {
                    expect(result).to.be.a('string');
                    done();
                });
            });

            it('should not end with a newline', function (done) {
                qrcode.generate('test', function(result) {
                    expect(result).not.to.match(/\n$/);
                    done();
                });
            });
        });
    });
});

Use single quotes for consistency.
[test] Use single quotes for consistency.
