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https://github.com/whoisclebs/lodash.git
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d5ef31929a
* 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.
701 lines
20 KiB
JavaScript
701 lines
20 KiB
JavaScript
import assert from 'assert';
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import lodashStable from 'lodash';
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import {
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noop,
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create,
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args,
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realm,
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arrayViews,
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map,
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promise,
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set,
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defineProperty,
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document,
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stubFalse,
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} from './utils.js';
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import isEqual from '../isEqual.js';
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describe('isEqual', function() {
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var symbol1 = Symbol ? Symbol('a') : true,
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symbol2 = Symbol ? Symbol('b') : false;
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it('should compare primitives', function() {
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var pairs = [
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[1, 1, true], [1, Object(1), true], [1, '1', false], [1, 2, false],
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[-0, -0, true], [0, 0, true], [0, Object(0), true], [Object(0), Object(0), true], [-0, 0, true], [0, '0', false], [0, null, false],
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[NaN, NaN, true], [NaN, Object(NaN), true], [Object(NaN), Object(NaN), true], [NaN, 'a', false], [NaN, Infinity, false],
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['a', 'a', true], ['a', Object('a'), true], [Object('a'), Object('a'), true], ['a', 'b', false], ['a', ['a'], false],
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[true, true, true], [true, Object(true), true], [Object(true), Object(true), true], [true, 1, false], [true, 'a', false],
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[false, false, true], [false, Object(false), true], [Object(false), Object(false), true], [false, 0, false], [false, '', false],
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[symbol1, symbol1, true], [symbol1, Object(symbol1), true], [Object(symbol1), Object(symbol1), true], [symbol1, symbol2, false],
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[null, null, true], [null, undefined, false], [null, {}, false], [null, '', false],
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[undefined, undefined, true], [undefined, null, false], [undefined, '', false]
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];
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var expected = lodashStable.map(pairs, function(pair) {
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return pair[2];
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});
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var actual = lodashStable.map(pairs, function(pair) {
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return isEqual(pair[0], pair[1]);
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});
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assert.deepStrictEqual(actual, expected);
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});
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it('should compare arrays', function() {
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var array1 = [true, null, 1, 'a', undefined],
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array2 = [true, null, 1, 'a', undefined];
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assert.strictEqual(isEqual(array1, array2), true);
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array1 = [[1, 2, 3], new Date(2012, 4, 23), /x/, { 'e': 1 }];
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array2 = [[1, 2, 3], new Date(2012, 4, 23), /x/, { 'e': 1 }];
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assert.strictEqual(isEqual(array1, array2), true);
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array1 = [1];
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array1[2] = 3;
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array2 = [1];
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array2[1] = undefined;
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array2[2] = 3;
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assert.strictEqual(isEqual(array1, array2), true);
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array1 = [Object(1), false, Object('a'), /x/, new Date(2012, 4, 23), ['a', 'b', [Object('c')]], { 'a': 1 }];
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array2 = [1, Object(false), 'a', /x/, new Date(2012, 4, 23), ['a', Object('b'), ['c']], { 'a': 1 }];
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assert.strictEqual(isEqual(array1, array2), true);
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array1 = [1, 2, 3];
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array2 = [3, 2, 1];
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assert.strictEqual(isEqual(array1, array2), false);
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array1 = [1, 2];
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array2 = [1, 2, 3];
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assert.strictEqual(isEqual(array1, array2), false);
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});
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it('should treat arrays with identical values but different non-index properties as equal', function() {
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var array1 = [1, 2, 3],
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array2 = [1, 2, 3];
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array1.every = array1.filter = array1.forEach =
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array1.indexOf = array1.lastIndexOf = array1.map =
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array1.some = array1.reduce = array1.reduceRight = null;
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array2.concat = array2.join = array2.pop =
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array2.reverse = array2.shift = array2.slice =
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array2.sort = array2.splice = array2.unshift = null;
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assert.strictEqual(isEqual(array1, array2), true);
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array1 = [1, 2, 3];
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array1.a = 1;
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array2 = [1, 2, 3];
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array2.b = 1;
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assert.strictEqual(isEqual(array1, array2), true);
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array1 = /c/.exec('abcde');
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array2 = ['c'];
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assert.strictEqual(isEqual(array1, array2), true);
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});
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it('should compare sparse arrays', function() {
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var array = Array(1);
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assert.strictEqual(isEqual(array, Array(1)), true);
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assert.strictEqual(isEqual(array, [undefined]), true);
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assert.strictEqual(isEqual(array, Array(2)), false);
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});
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it('should compare plain objects', function() {
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var object1 = { 'a': true, 'b': null, 'c': 1, 'd': 'a', 'e': undefined },
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object2 = { 'a': true, 'b': null, 'c': 1, 'd': 'a', 'e': undefined };
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assert.strictEqual(isEqual(object1, object2), true);
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object1 = { 'a': [1, 2, 3], 'b': new Date(2012, 4, 23), 'c': /x/, 'd': { 'e': 1 } };
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object2 = { 'a': [1, 2, 3], 'b': new Date(2012, 4, 23), 'c': /x/, 'd': { 'e': 1 } };
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assert.strictEqual(isEqual(object1, object2), true);
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object1 = { 'a': 1, 'b': 2, 'c': 3 };
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object2 = { 'a': 3, 'b': 2, 'c': 1 };
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assert.strictEqual(isEqual(object1, object2), false);
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object1 = { 'a': 1, 'b': 2, 'c': 3 };
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object2 = { 'd': 1, 'e': 2, 'f': 3 };
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assert.strictEqual(isEqual(object1, object2), false);
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object1 = { 'a': 1, 'b': 2 };
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object2 = { 'a': 1, 'b': 2, 'c': 3 };
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assert.strictEqual(isEqual(object1, object2), false);
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});
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it('should compare objects regardless of key order', function() {
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var object1 = { 'a': 1, 'b': 2, 'c': 3 },
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object2 = { 'c': 3, 'a': 1, 'b': 2 };
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assert.strictEqual(isEqual(object1, object2), true);
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});
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it('should compare nested objects', function() {
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var object1 = {
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'a': [1, 2, 3],
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'b': true,
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'c': Object(1),
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'd': 'a',
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'e': {
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'f': ['a', Object('b'), 'c'],
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'g': Object(false),
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'h': new Date(2012, 4, 23),
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'i': noop,
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'j': 'a'
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}
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};
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var object2 = {
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'a': [1, Object(2), 3],
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'b': Object(true),
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'c': 1,
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'd': Object('a'),
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'e': {
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'f': ['a', 'b', 'c'],
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'g': false,
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'h': new Date(2012, 4, 23),
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'i': noop,
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'j': 'a'
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}
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};
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assert.strictEqual(isEqual(object1, object2), true);
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});
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it('should compare object instances', function() {
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function Foo() {
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this.a = 1;
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}
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Foo.prototype.a = 1;
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function Bar() {
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this.a = 1;
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}
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Bar.prototype.a = 2;
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assert.strictEqual(isEqual(new Foo, new Foo), true);
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assert.strictEqual(isEqual(new Foo, new Bar), false);
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assert.strictEqual(isEqual({ 'a': 1 }, new Foo), false);
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assert.strictEqual(isEqual({ 'a': 2 }, new Bar), false);
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});
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it('should compare objects with constructor properties', function() {
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assert.strictEqual(isEqual({ 'constructor': 1 }, { 'constructor': 1 }), true);
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assert.strictEqual(isEqual({ 'constructor': 1 }, { 'constructor': '1' }), false);
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assert.strictEqual(isEqual({ 'constructor': [1] }, { 'constructor': [1] }), true);
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assert.strictEqual(isEqual({ 'constructor': [1] }, { 'constructor': ['1'] }), false);
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assert.strictEqual(isEqual({ 'constructor': Object }, {}), false);
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});
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it('should compare arrays with circular references', function() {
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var array1 = [],
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array2 = [];
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array1.push(array1);
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array2.push(array2);
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assert.strictEqual(isEqual(array1, array2), true);
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array1.push('b');
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array2.push('b');
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assert.strictEqual(isEqual(array1, array2), true);
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array1.push('c');
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array2.push('d');
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assert.strictEqual(isEqual(array1, array2), false);
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array1 = ['a', 'b', 'c'];
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array1[1] = array1;
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array2 = ['a', ['a', 'b', 'c'], 'c'];
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assert.strictEqual(isEqual(array1, array2), false);
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});
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it('should have transitive equivalence for circular references of arrays', function() {
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var array1 = [],
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array2 = [array1],
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array3 = [array2];
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array1[0] = array1;
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assert.strictEqual(isEqual(array1, array2), true);
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assert.strictEqual(isEqual(array2, array3), true);
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assert.strictEqual(isEqual(array1, array3), true);
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});
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it('should compare objects with circular references', function() {
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var object1 = {},
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object2 = {};
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object1.a = object1;
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object2.a = object2;
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assert.strictEqual(isEqual(object1, object2), true);
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object1.b = 0;
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object2.b = Object(0);
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assert.strictEqual(isEqual(object1, object2), true);
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object1.c = Object(1);
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object2.c = Object(2);
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assert.strictEqual(isEqual(object1, object2), false);
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object1 = { 'a': 1, 'b': 2, 'c': 3 };
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object1.b = object1;
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object2 = { 'a': 1, 'b': { 'a': 1, 'b': 2, 'c': 3 }, 'c': 3 };
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assert.strictEqual(isEqual(object1, object2), false);
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});
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it('should have transitive equivalence for circular references of objects', function() {
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var object1 = {},
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object2 = { 'a': object1 },
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object3 = { 'a': object2 };
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object1.a = object1;
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assert.strictEqual(isEqual(object1, object2), true);
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assert.strictEqual(isEqual(object2, object3), true);
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assert.strictEqual(isEqual(object1, object3), true);
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});
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it('should compare objects with multiple circular references', function() {
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var array1 = [{}],
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array2 = [{}];
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(array1[0].a = array1).push(array1);
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(array2[0].a = array2).push(array2);
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assert.strictEqual(isEqual(array1, array2), true);
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array1[0].b = 0;
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array2[0].b = Object(0);
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assert.strictEqual(isEqual(array1, array2), true);
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array1[0].c = Object(1);
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array2[0].c = Object(2);
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assert.strictEqual(isEqual(array1, array2), false);
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});
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it('should compare objects with complex circular references', function() {
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var object1 = {
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'foo': { 'b': { 'c': { 'd': {} } } },
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'bar': { 'a': 2 }
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};
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var object2 = {
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'foo': { 'b': { 'c': { 'd': {} } } },
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'bar': { 'a': 2 }
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};
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object1.foo.b.c.d = object1;
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object1.bar.b = object1.foo.b;
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object2.foo.b.c.d = object2;
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object2.bar.b = object2.foo.b;
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assert.strictEqual(isEqual(object1, object2), true);
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});
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it('should compare objects with shared property values', function() {
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var object1 = {
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'a': [1, 2]
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};
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var object2 = {
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'a': [1, 2],
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'b': [1, 2]
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};
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object1.b = object1.a;
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assert.strictEqual(isEqual(object1, object2), true);
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});
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it('should treat objects created by `Object.create(null)` like plain objects', function() {
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function Foo() {
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this.a = 1;
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}
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Foo.prototype.constructor = null;
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var object1 = create(null);
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object1.a = 1;
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var object2 = { 'a': 1 };
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assert.strictEqual(isEqual(object1, object2), true);
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assert.strictEqual(isEqual(new Foo, object2), false);
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});
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it('should avoid common type coercions', function() {
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assert.strictEqual(isEqual(true, Object(false)), false);
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assert.strictEqual(isEqual(Object(false), Object(0)), false);
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assert.strictEqual(isEqual(false, Object('')), false);
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assert.strictEqual(isEqual(Object(36), Object('36')), false);
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assert.strictEqual(isEqual(0, ''), false);
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assert.strictEqual(isEqual(1, true), false);
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assert.strictEqual(isEqual(1337756400000, new Date(2012, 4, 23)), false);
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assert.strictEqual(isEqual('36', 36), false);
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assert.strictEqual(isEqual(36, '36'), false);
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});
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it('should compare `arguments` objects', function() {
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var args1 = (function() { return arguments; }()),
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args2 = (function() { return arguments; }()),
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args3 = (function() { return arguments; }(1, 2));
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assert.strictEqual(isEqual(args1, args2), true);
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assert.strictEqual(isEqual(args1, args3), false);
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});
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it('should treat `arguments` objects like `Object` objects', function() {
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var object = { '0': 1, '1': 2, '2': 3 };
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function Foo() {}
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Foo.prototype = object;
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assert.strictEqual(isEqual(args, object), true);
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assert.strictEqual(isEqual(object, args), true);
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assert.strictEqual(isEqual(args, new Foo), false);
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assert.strictEqual(isEqual(new Foo, args), false);
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});
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it('should compare array buffers', function() {
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if (ArrayBuffer) {
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var buffer = new Int8Array([-1]).buffer;
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assert.strictEqual(isEqual(buffer, new Uint8Array([255]).buffer), true);
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assert.strictEqual(isEqual(buffer, new ArrayBuffer(1)), false);
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}
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});
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it('should compare array views', function() {
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lodashStable.times(2, function(index) {
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var ns = index ? realm : root;
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var pairs = lodashStable.map(arrayViews, function(type, viewIndex) {
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var otherType = arrayViews[(viewIndex + 1) % arrayViews.length],
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CtorA = ns[type] || function(n) { this.n = n; },
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CtorB = ns[otherType] || function(n) { this.n = n; },
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bufferA = ns[type] ? new ns.ArrayBuffer(8) : 8,
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bufferB = ns[otherType] ? new ns.ArrayBuffer(8) : 8,
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bufferC = ns[otherType] ? new ns.ArrayBuffer(16) : 16;
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return [new CtorA(bufferA), new CtorA(bufferA), new CtorB(bufferB), new CtorB(bufferC)];
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});
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var expected = lodashStable.map(pairs, lodashStable.constant([true, false, false]));
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var actual = lodashStable.map(pairs, function(pair) {
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return [isEqual(pair[0], pair[1]), isEqual(pair[0], pair[2]), isEqual(pair[2], pair[3])];
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});
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assert.deepStrictEqual(actual, expected);
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});
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});
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it('should compare buffers', function() {
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if (Buffer) {
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var buffer = new Buffer([1]);
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assert.strictEqual(isEqual(buffer, new Buffer([1])), true);
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assert.strictEqual(isEqual(buffer, new Buffer([2])), false);
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assert.strictEqual(isEqual(buffer, new Uint8Array([1])), false);
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}
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});
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it('should compare date objects', function() {
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var date = new Date(2012, 4, 23);
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assert.strictEqual(isEqual(date, new Date(2012, 4, 23)), true);
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assert.strictEqual(isEqual(new Date('a'), new Date('b')), true);
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assert.strictEqual(isEqual(date, new Date(2013, 3, 25)), false);
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assert.strictEqual(isEqual(date, { 'getTime': lodashStable.constant(+date) }), false);
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});
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it('should compare error objects', function() {
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var pairs = lodashStable.map([
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'Error',
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'EvalError',
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'RangeError',
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'ReferenceError',
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'SyntaxError',
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'TypeError',
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'URIError'
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], function(type, index, errorTypes) {
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var otherType = errorTypes[++index % errorTypes.length],
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CtorA = root[type],
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CtorB = root[otherType];
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return [new CtorA('a'), new CtorA('a'), new CtorB('a'), new CtorB('b')];
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});
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var expected = lodashStable.map(pairs, lodashStable.constant([true, false, false]));
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var actual = lodashStable.map(pairs, function(pair) {
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return [isEqual(pair[0], pair[1]), isEqual(pair[0], pair[2]), isEqual(pair[2], pair[3])];
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});
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assert.deepStrictEqual(actual, expected);
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});
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it('should compare functions', function() {
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function a() { return 1 + 2; }
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function b() { return 1 + 2; }
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assert.strictEqual(isEqual(a, a), true);
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assert.strictEqual(isEqual(a, b), false);
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});
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it('should compare maps', function() {
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if (Map) {
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lodashStable.each([[map, new Map], [map, realm.map]], function(maps) {
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var map1 = maps[0],
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map2 = maps[1];
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map1.set('a', 1);
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map2.set('b', 2);
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assert.strictEqual(isEqual(map1, map2), false);
|
|
|
|
map1.set('b', 2);
|
|
map2.set('a', 1);
|
|
assert.strictEqual(isEqual(map1, map2), true);
|
|
|
|
map1.delete('a');
|
|
map1.set('a', 1);
|
|
assert.strictEqual(isEqual(map1, map2), true);
|
|
|
|
map2.delete('a');
|
|
assert.strictEqual(isEqual(map1, map2), false);
|
|
|
|
map1.clear();
|
|
map2.clear();
|
|
});
|
|
}
|
|
});
|
|
|
|
it('should compare maps with circular references', function() {
|
|
if (Map) {
|
|
var map1 = new Map,
|
|
map2 = new Map;
|
|
|
|
map1.set('a', map1);
|
|
map2.set('a', map2);
|
|
assert.strictEqual(isEqual(map1, map2), true);
|
|
|
|
map1.set('b', 1);
|
|
map2.set('b', 2);
|
|
assert.strictEqual(isEqual(map1, map2), false);
|
|
}
|
|
});
|
|
|
|
it('should compare promises by reference', function() {
|
|
if (promise) {
|
|
lodashStable.each([[promise, Promise.resolve(1)], [promise, realm.promise]], function(promises) {
|
|
var promise1 = promises[0],
|
|
promise2 = promises[1];
|
|
|
|
assert.strictEqual(isEqual(promise1, promise2), false);
|
|
assert.strictEqual(isEqual(promise1, promise1), true);
|
|
});
|
|
}
|
|
});
|
|
|
|
it('should compare regexes', function() {
|
|
assert.strictEqual(isEqual(/x/gim, /x/gim), true);
|
|
assert.strictEqual(isEqual(/x/gim, /x/mgi), true);
|
|
assert.strictEqual(isEqual(/x/gi, /x/g), false);
|
|
assert.strictEqual(isEqual(/x/, /y/), false);
|
|
assert.strictEqual(isEqual(/x/g, { 'global': true, 'ignoreCase': false, 'multiline': false, 'source': 'x' }), false);
|
|
});
|
|
|
|
it('should compare sets', function() {
|
|
if (Set) {
|
|
lodashStable.each([[set, new Set], [set, realm.set]], function(sets) {
|
|
var set1 = sets[0],
|
|
set2 = sets[1];
|
|
|
|
set1.add(1);
|
|
set2.add(2);
|
|
assert.strictEqual(isEqual(set1, set2), false);
|
|
|
|
set1.add(2);
|
|
set2.add(1);
|
|
assert.strictEqual(isEqual(set1, set2), true);
|
|
|
|
set1.delete(1);
|
|
set1.add(1);
|
|
assert.strictEqual(isEqual(set1, set2), true);
|
|
|
|
set2.delete(1);
|
|
assert.strictEqual(isEqual(set1, set2), false);
|
|
|
|
set1.clear();
|
|
set2.clear();
|
|
});
|
|
}
|
|
});
|
|
|
|
it('should compare sets with circular references', function() {
|
|
if (Set) {
|
|
var set1 = new Set,
|
|
set2 = new Set;
|
|
|
|
set1.add(set1);
|
|
set2.add(set2);
|
|
assert.strictEqual(isEqual(set1, set2), true);
|
|
|
|
set1.add(1);
|
|
set2.add(2);
|
|
assert.strictEqual(isEqual(set1, set2), false);
|
|
}
|
|
});
|
|
|
|
it('should compare symbol properties', function() {
|
|
if (Symbol) {
|
|
var object1 = { 'a': 1 },
|
|
object2 = { 'a': 1 };
|
|
|
|
object1[symbol1] = { 'a': { 'b': 2 } };
|
|
object2[symbol1] = { 'a': { 'b': 2 } };
|
|
|
|
defineProperty(object2, symbol2, {
|
|
'configurable': true,
|
|
'enumerable': false,
|
|
'writable': true,
|
|
'value': 2
|
|
});
|
|
|
|
assert.strictEqual(isEqual(object1, object2), true);
|
|
|
|
object2[symbol1] = { 'a': 1 };
|
|
assert.strictEqual(isEqual(object1, object2), false);
|
|
|
|
delete object2[symbol1];
|
|
object2[Symbol('a')] = { 'a': { 'b': 2 } };
|
|
assert.strictEqual(isEqual(object1, object2), false);
|
|
}
|
|
});
|
|
|
|
it('should compare wrapped values', function() {
|
|
var stamp = +new Date;
|
|
|
|
var values = [
|
|
[[1, 2], [1, 2], [1, 2, 3]],
|
|
[true, true, false],
|
|
[new Date(stamp), new Date(stamp), new Date(stamp - 100)],
|
|
[{ 'a': 1, 'b': 2 }, { 'a': 1, 'b': 2 }, { 'a': 1, 'b': 1 }],
|
|
[1, 1, 2],
|
|
[NaN, NaN, Infinity],
|
|
[/x/, /x/, /x/i],
|
|
['a', 'a', 'A']
|
|
];
|
|
|
|
lodashStable.each(values, function(vals) {
|
|
var wrapped1 = _(vals[0]),
|
|
wrapped2 = _(vals[1]),
|
|
actual = wrapped1.isEqual(wrapped2);
|
|
|
|
assert.strictEqual(actual, true);
|
|
assert.strictEqual(isEqual(_(actual), _(true)), true);
|
|
|
|
wrapped1 = _(vals[0]);
|
|
wrapped2 = _(vals[2]);
|
|
|
|
actual = wrapped1.isEqual(wrapped2);
|
|
assert.strictEqual(actual, false);
|
|
assert.strictEqual(isEqual(_(actual), _(false)), true);
|
|
});
|
|
});
|
|
|
|
it('should compare wrapped and non-wrapped values', function() {
|
|
var object1 = _({ 'a': 1, 'b': 2 }),
|
|
object2 = { 'a': 1, 'b': 2 };
|
|
|
|
assert.strictEqual(object1.isEqual(object2), true);
|
|
assert.strictEqual(isEqual(object1, object2), true);
|
|
|
|
object1 = _({ 'a': 1, 'b': 2 });
|
|
object2 = { 'a': 1, 'b': 1 };
|
|
|
|
assert.strictEqual(object1.isEqual(object2), false);
|
|
assert.strictEqual(isEqual(object1, object2), false);
|
|
});
|
|
|
|
it('should work as an iteratee for `_.every`', function() {
|
|
var actual = lodashStable.every([1, 1, 1], lodashStable.partial(isEqual, 1));
|
|
assert.ok(actual);
|
|
});
|
|
|
|
it('should not error on DOM elements', function() {
|
|
if (document) {
|
|
var element1 = document.createElement('div'),
|
|
element2 = element1.cloneNode(true);
|
|
|
|
try {
|
|
assert.strictEqual(isEqual(element1, element2), false);
|
|
} catch (e) {
|
|
assert.ok(false, e.message);
|
|
}
|
|
}
|
|
});
|
|
|
|
it('should return `true` for like-objects from different documents', function() {
|
|
if (realm.object) {
|
|
assert.strictEqual(isEqual([1], realm.array), true);
|
|
assert.strictEqual(isEqual([2], realm.array), false);
|
|
assert.strictEqual(isEqual({ 'a': 1 }, realm.object), true);
|
|
assert.strictEqual(isEqual({ 'a': 2 }, realm.object), false);
|
|
}
|
|
});
|
|
|
|
it('should return `false` for objects with custom `toString` methods', function() {
|
|
var primitive,
|
|
object = { 'toString': function() { return primitive; } },
|
|
values = [true, null, 1, 'a', undefined],
|
|
expected = lodashStable.map(values, stubFalse);
|
|
|
|
var actual = lodashStable.map(values, function(value) {
|
|
primitive = value;
|
|
return isEqual(object, value);
|
|
});
|
|
|
|
assert.deepStrictEqual(actual, expected);
|
|
});
|
|
|
|
it('should return an unwrapped value when implicitly chaining', function() {
|
|
assert.strictEqual(_('a').isEqual('a'), true);
|
|
});
|
|
|
|
it('should return a wrapped value when explicitly chaining', function() {
|
|
assert.ok(_('a').chain().isEqual('a') instanceof _);
|
|
});
|
|
});
|