agi-number-archer/spec/FinderSpec.js

var Finder = require('../lib/finder');

describe('Finder', function () {
    var dbModel;
    var finder;
    var expectedCode;
    var testNumber = '83912332211';
    beforeEach(function () {
        function generateRandomCode() {
            var min = 24;
            var max = 95;
            return Math.round(Math.random() * (max - min) + min);
        }

        expectedCode = generateRandomCode();
    });
    it('return code if there is appropriate document in db', function (done) {
        var expectedQuery = {
            code: '391',
            begin: {
                $lte: '2332211'
            },
            end: {
                $gte: '2332211'
            }
        };
        dbModel = {
            findOne: function (query, callback) {
                expect(query).toEqual(expectedQuery);
                callback(null, {
                    region: {
                        code: expectedCode
                    }
                });
            }
        };
        finder = new Finder(dbModel);
        var resultPromise = finder.findCodeForNumber(testNumber);
        resultPromise.then(function (code) {
            expect(code).toBe(expectedCode);
            done();
        });
    });
    it('return "NULL" if there is no appropriate document in db', function (done) {
        dbModel = {
            findOne: function (query, callback) {
                callback(null, null);
            }
        };
        finder = new Finder(dbModel);
        var resultPromise = finder.findCodeForNumber(testNumber);
        resultPromise.then(function (code) {
            expect(code).toBe('NULL');
            done();
        });
    });
    it('promise call reject if findOne return error', function (done) {
        var expectedErrorMessage = 'test error';
        dbModel = {
            findOne: function (query, callback) {
                callback(new Error(expectedErrorMessage));
            }
        };
        finder = new Finder(dbModel);
        var resultPromise = finder.findCodeForNumber(testNumber);
        resultPromise.fail(function (err) {
            expect(err.message).toBe(expectedErrorMessage);
            done();
        });
    });
});