commerce.unit.js

if(typeof module !== 'undefined') {
    var assert = require('assert'),
        sinon = require('sinon'),
        faker = require('../index');
}

describe("commerce.js", function() {

    describe("color()", function() {
        it("returns random value from commerce.color array", function() {
            var color = faker.commerce.color();
            assert.ok(faker.definitions.commerce.color.indexOf(color) !== -1);
        });
    });

    describe("department(max, fixedValue)", function() {
        it("should use the default amounts when not passing arguments", function() {
            var department = faker.commerce.department();

            assert.ok(department.split(" ").length <= 4);
        });

        it("should return only one value if we specify a maximum of one", function() {
            sinon.spy(faker.random, 'array_element');

            var department = faker.commerce.department(1);

            assert.strictEqual(department.split(" ").length, 1);
            assert.ok(faker.random.array_element.calledOnce);

            faker.random.array_element.restore();
        });

        it("should return the maxiumum value if we specify the fixed value", function() {
            sinon.spy(faker.random, 'array_element');

            var department = faker.commerce.department(5, true);

            console.log(department);

            // account for the separator
            assert.strictEqual(department.split(" ").length, 6);
            // Sometimes it will generate duplicates that aren't used in the final string,
            // so we check if array_element has been called exactly or more than 5 times
            assert.ok(faker.random.array_element.callCount >= 5);

            faker.random.array_element.restore();
        })
    });

    describe("productName()", function() {
        it("returns name comprising of an adjective, material and product", function() {
            sinon.spy(faker.random, 'array_element');
            sinon.spy(faker.commerce, 'productAdjective');
            sinon.spy(faker.commerce, 'productMaterial');
            sinon.spy(faker.commerce, 'product');
            var name = faker.commerce.productName();

            assert.ok(name.split(' ').length >= 3);
            assert.ok(faker.random.array_element.calledThrice);
            assert.ok(faker.commerce.productAdjective.calledOnce);
            assert.ok(faker.commerce.productMaterial.calledOnce);
            assert.ok(faker.commerce.product.calledOnce);

            faker.random.array_element.restore();
            faker.commerce.productAdjective.restore();
            faker.commerce.productMaterial.restore();
            faker.commerce.product.restore();
        });
    });

    describe("price(min, max, dec, symbol", function() {
        it("should use the default amounts when not passing arguments", function() {
            var price = faker.commerce.price();

            assert.ok(price);
            assert.equal((price > 0), true, "the amount should be greater than 0");
            assert.equal((price < 1001), true, "the amount should be less than 1000");
        });

        it("should use the default decimal location when not passing arguments", function() {
            var price = faker.commerce.price();

            var decimal = ".";
            var expected = price.length - 3;
            var actual = price.indexOf(decimal);

            assert.equal(actual, expected, "The expected location of the decimal is " + expected + " but it was " + actual + " amount " + price);
        });

        it("should not include a currency symbol by default", function () {

            var amount = faker.commerce.price();

            var regexp = new RegExp(/[0-9.]/);

            var expected = true;
            var actual = regexp.test(amount);

            assert.equal(actual, expected, 'The expected match should not include a currency symbol');
        });

        it("it should handle negative amounts, but return 0", function () {

            var amount = faker.commerce.price(-200, -1);

            assert.ok(amount);
            assert.equal((amount == 0.00), true, "the amount should equal 0");
        });
    });

});