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* Install test dependencies. * Add initial test files. These files were created using a simplistic AST manipulator using `recast` to preserve formatting. There's bound to be a huge chunk of errors, but this serves as a good start. QUnit was replaced with Mocha, with ES2015 imports running via `esm`. As far as possible, QUnit-specific syntax has been replaced with Mocha's `describe` and `it`, while the native Node.js `assert` module is used for assertions. Files in the `test` directory ending in `.test.js` will be treated as test files. * Add initial passing files to test run.
76 lines
2.1 KiB
JavaScript
76 lines
2.1 KiB
JavaScript
import assert from 'assert';
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import lodashStable from 'lodash';
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import { falsey, stubZero, args, push, arrayProto, realm, MAX_SAFE_INTEGER } from './utils.js';
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import size from '../size.js';
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describe('size', function() {
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var array = [1, 2, 3];
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it('should return the number of own enumerable string keyed properties of an object', function() {
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assert.strictEqual(size({ 'one': 1, 'two': 2, 'three': 3 }), 3);
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});
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it('should return the length of an array', function() {
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assert.strictEqual(size(array), 3);
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});
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it('should accept a falsey `object`', function() {
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var expected = lodashStable.map(falsey, stubZero);
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var actual = lodashStable.map(falsey, function(object, index) {
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try {
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return index ? size(object) : size();
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} catch (e) {}
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});
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assert.deepStrictEqual(actual, expected);
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});
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it('should work with `arguments` objects', function() {
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assert.strictEqual(size(args), 3);
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});
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it('should work with jQuery/MooTools DOM query collections', function() {
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function Foo(elements) {
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push.apply(this, elements);
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}
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Foo.prototype = { 'length': 0, 'splice': arrayProto.splice };
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assert.strictEqual(size(new Foo(array)), 3);
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});
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it('should work with maps', function() {
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if (Map) {
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lodashStable.each([new Map, realm.map], function(map) {
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map.set('a', 1);
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map.set('b', 2);
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assert.strictEqual(size(map), 2);
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map.clear();
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});
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}
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});
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it('should work with sets', function() {
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if (Set) {
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lodashStable.each([new Set, realm.set], function(set) {
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set.add(1);
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set.add(2);
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assert.strictEqual(size(set), 2);
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set.clear();
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});
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}
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});
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it('should not treat objects with negative lengths as array-like', function() {
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assert.strictEqual(size({ 'length': -1 }), 1);
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});
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it('should not treat objects with lengths larger than `MAX_SAFE_INTEGER` as array-like', function() {
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assert.strictEqual(size({ 'length': MAX_SAFE_INTEGER + 1 }), 1);
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});
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it('should not treat objects with non-number lengths as array-like', function() {
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assert.strictEqual(size({ 'length': '0' }), 1);
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});
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});
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