103 lines
4.1 KiB
JavaScript
103 lines
4.1 KiB
JavaScript
/**
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* Copyright (c) 2015-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*/
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'use strict';
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jest.unmock('deepDiffer');
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var deepDiffer = require('deepDiffer');
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describe('deepDiffer', function() {
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it('should diff primitives of the same type', () => {
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expect(deepDiffer(1, 2)).toBe(true);
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expect(deepDiffer(42, 42)).toBe(false);
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expect(deepDiffer('foo', 'bar')).toBe(true);
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expect(deepDiffer('foo', 'foo')).toBe(false);
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expect(deepDiffer(true, false)).toBe(true);
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expect(deepDiffer(false, true)).toBe(true);
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expect(deepDiffer(true, true)).toBe(false);
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expect(deepDiffer(false, false)).toBe(false);
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expect(deepDiffer(null, null)).toBe(false);
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expect(deepDiffer(undefined, undefined)).toBe(false);
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});
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it('should diff primitives of different types', () => {
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expect(deepDiffer(1, '1')).toBe(true);
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expect(deepDiffer(true, 'true')).toBe(true);
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expect(deepDiffer(true, 1)).toBe(true);
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expect(deepDiffer(false, 0)).toBe(true);
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expect(deepDiffer(null, undefined)).toBe(true);
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expect(deepDiffer(null, 0)).toBe(true);
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expect(deepDiffer(null, false)).toBe(true);
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expect(deepDiffer(null, '')).toBe(true);
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expect(deepDiffer(undefined, 0)).toBe(true);
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expect(deepDiffer(undefined, false)).toBe(true);
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expect(deepDiffer(undefined, '')).toBe(true);
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});
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it('should diff Objects', () => {
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expect(deepDiffer({}, {})).toBe(false);
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expect(deepDiffer({}, null)).toBe(true);
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expect(deepDiffer(null, {})).toBe(true);
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expect(deepDiffer({a: 1}, {a: 1})).toBe(false);
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expect(deepDiffer({a: 1}, {a: 2})).toBe(true);
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expect(deepDiffer({a: 1}, {a: 1, b: null})).toBe(true);
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expect(deepDiffer({a: 1}, {a: 1, b: 1})).toBe(true);
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expect(deepDiffer({a: 1, b: 1}, {a: 1})).toBe(true);
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expect(deepDiffer({a: {A: 1}, b: 1}, {a: {A: 1}, b: 1})).toBe(false);
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expect(deepDiffer({a: {A: 1}, b: 1}, {a: {A: 2}, b: 1})).toBe(true);
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expect(deepDiffer(
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{a: {A: {aA: 1, bB: 1}}, b: 1},
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{a: {A: {aA: 1, bB: 1}}, b: 1}
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)).toBe(false);
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expect(deepDiffer(
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{a: {A: {aA: 1, bB: 1}}, b: 1},
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{a: {A: {aA: 1, cC: 1}}, b: 1}
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)).toBe(true);
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});
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it('should diff Arrays', () => {
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expect(deepDiffer([], [])).toBe(false);
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expect(deepDiffer([], null)).toBe(true);
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expect(deepDiffer(null, [])).toBe(true);
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expect(deepDiffer([42], [42])).toBe(false);
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expect(deepDiffer([1], [2])).toBe(true);
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expect(deepDiffer([1, 2, 3], [1, 2, 3])).toBe(false);
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expect(deepDiffer([1, 2, 3], [1, 2, 4])).toBe(true);
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expect(deepDiffer([1, 2, 3], [1, 4, 3])).toBe(true);
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expect(deepDiffer([1, 2, 3, 4], [1, 2, 3])).toBe(true);
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expect(deepDiffer([1, 2, 3], [1, 2, 3, 4])).toBe(true);
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expect(deepDiffer([0, null, false, ''], [0, null, false, ''])).toBe(false);
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expect(deepDiffer([0, null, false, ''], ['', false, null, 0])).toBe(true);
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});
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it('should diff mixed types', () => {
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expect(deepDiffer({}, [])).toBe(true);
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expect(deepDiffer([], {})).toBe(true);
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expect(deepDiffer(
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{a: [{A: {aA: 1, bB: 1}}, 'bar'], c: [1, [false]]},
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{a: [{A: {aA: 1, bB: 1}}, 'bar'], c: [1, [false]]}
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)).toBe(false);
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expect(deepDiffer(
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{a: [{A: {aA: 1, bB: 1}}, 'bar'], c: [1, [false]]},
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{a: [{A: {aA: 1, bB: 2}}, 'bar'], c: [1, [false]]}
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)).toBe(true);
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expect(deepDiffer(
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{a: [{A: {aA: 1, bB: 1}}, 'bar'], c: [1, [false]]},
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{a: [{A: {aA: 1, bB: 1}}, 'bar'], c: [1, [false], null]}
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)).toBe(true);
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expect(deepDiffer(
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{a: [{A: {aA: 1, bB: 1}}, 'bar'], c: [1, [false]]},
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{a: [{A: {aA: 1, bB: 1}}, ['bar']], c: [1, [false]]}
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)).toBe(true);
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});
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it('should distinguish between proper Array and Object', () => {
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expect(deepDiffer(['a', 'b'], {0: 'a', 1: 'b', length: 2})).toBe(true);
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expect(deepDiffer(['a', 'b'], {length: 2, 0: 'a', 1: 'b'})).toBe(true);
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});
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it('should diff same object', () => {
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var obj = [1,[2,3]];
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expect(deepDiffer(obj, obj)).toBe(false);
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});
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});
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