153 lines
3.8 KiB
JavaScript
153 lines
3.8 KiB
JavaScript
'use strict';
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let chai = require('chai'),
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assert = chai.assert,
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expect = chai.expect,
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should = chai.should();
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let helpers = require('../lib/helpers');
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suite('Helper Module Tests', () => {
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suite('Type-checking methods', () => {
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suite('Object wrappers are listed as their native type', () => {
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test('Boolean Wrapper returns \'boolean\' not \'object\'', () => {
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let item = Boolean(true);
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expect(helpers.type(item)).to.deep.equal('boolean');
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});
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test('Number Wrapper returns \'number\' not \'object\'', () => {
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let item = Number(4867);
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expect(helpers.type(item)).to.deep.equal('number');
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});
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test('String Wrapper returns \'string\' not \'object\'', () => {
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let item = String('Foo');
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expect(helpers.type(item)).to.deep.equal('string');
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});
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});
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suite('is..Method methods exist', () => {
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let types = [
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'Null',
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'Undefined',
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'Object',
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'Array',
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'String',
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'Number',
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'Boolean',
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'Function',
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'RegExp',
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'NaN',
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'Infinite',
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];
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types.forEach(type => {
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test(`is${type} method exists`, () => {
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assert.ok(helpers[`is${type}`]);
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});
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});
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});
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suite('isScalar', () => {
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let trueCases = {
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'Strings are scalar': 'foo',
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'Booleans are scalar': true,
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'Numbers are scalar': 545,
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};
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Object.keys(trueCases).forEach(desc => {
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test(desc, () => {
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expect(helpers.isScalar(trueCases[desc])).to.be.true;
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});
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});
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let falseCases = {
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'Arrays are not scalar': [],
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'Objects are not scalar': [],
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};
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Object.keys(falseCases).forEach(desc => {
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test(desc, () => {
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expect(helpers.isScalar(falseCases[desc])).to.be.false;
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});
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});
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});
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suite('isInfinity', () => {
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test('The type of 1/0 is infinity', () => {
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expect(helpers.type(1 / 0)).to.equal('infinity');
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});
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test('isInfinity is the same as isInfinite', () => {
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expect(helpers.isInfinite(1 / 0)).to.be.true;
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});
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});
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suite('isNaN', () => {
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test('The type of 0 / 0 is NaN', () => {
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expect(helpers.type(0 / 0)).to.equal('nan');
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});
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test('isNaN method agrees with type', () => {
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expect(helpers.isNaN(0 / 0)).to.be.true;
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});
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});
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});
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suite('Other helper methods', () => {
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suite('stringTrim', () => {
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test('stringTrim method works as expected', () => {
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let orig = [' x y ', 'z ', ' q'];
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let ret = ['x y', 'z', 'q'];
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expect(orig.map(helpers.stringTrim)).to.be.deep.equal(ret);
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});
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});
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suite('arrayPluck', () => {
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let orig = [
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{
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foo: 1,
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}, {
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foo: 2,
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bar: 10,
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}, {
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foo: 3,
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bar: 15,
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},
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];
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test('Finding members in all objects', () => {
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expect(helpers.arrayPluck(orig, 'foo')).to.be.deep.equal([1, 2, 3]);
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});
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test('Some members are missing in some objects', () => {
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expect(helpers.arrayPluck(orig, 'bar')).to.be.deep.equal([10, 15]);
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});
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test('Empty case', () => {
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expect(helpers.arrayPluck([], 'apple')).to.be.deep.equal([]);
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});
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});
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suite('regexInArray', () => {
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let orig = ['apple', ' string ', 6, 4, 7];
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let cases = [
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{
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'Dollar sign is not in any of the array items': /\$/,
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'None of the numbers in the array match /5/': /5/,
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}, {
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'\' string \' matches /^ ?string/': /^ ?string/,
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'\'apple\' matches /APPLE/i': /APPLE/i,
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},
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];
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[0, 1].forEach(i => {
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let boolCase = cases[i];
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Object.keys(boolCase).forEach(desc => {
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test(desc, () => {
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if (i) {
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expect(helpers.regexInArray(orig, boolCase[desc])).to.be.true;
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} else {
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expect(helpers.regexInArray(orig, boolCase[desc])).to.be.false;
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}
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});
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});
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});
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test('First argument is not an array', () => {
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expect(helpers.regexInArray(5, /5/)).to.be.false;
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});
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test('Array is empty', () => {
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expect(helpers.regexInArray([], /.*/)).to.be.false;
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});
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});
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});
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});
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