77 строки
2.1 KiB
JavaScript
77 строки
2.1 KiB
JavaScript
/**
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*
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* @format
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* @emails oncall+react_native
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*/
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'use strict';
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jest.setMock('../../BatchedBridge/NativeModules', {
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BlobModule: require('../__mocks__/BlobModule'),
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});
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const Blob = require('../Blob');
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const File = require('../File');
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describe('babel 7 smoke test', function() {
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it('should be able to extend a class with native name', function() {
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let called = false;
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class Array {
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constructor() {
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called = true;
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return {foo: 'PASS'};
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}
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}
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class A extends Array {
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constructor() {
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super();
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}
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}
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// there is/was a regression in Babel where this would break and super()
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// would not actually invoke the constructor of the parent class if the
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// parent class had a name matching a built-in class (like Blob)
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expect(new A().foo).toBe('PASS');
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expect(called).toBe(true);
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});
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});
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describe('Blob', function() {
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it('regression caused by circular dep && babel 7', function() {
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const blob = new Blob([], {type: 'image/jpeg'});
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expect(blob).toBeInstanceOf(Blob);
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});
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});
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describe('File', function() {
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it('should create empty file', () => {
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const file = new File([], 'test.jpg');
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expect(file).toBeInstanceOf(File);
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expect(file.data.offset).toBe(0);
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expect(file.data.size).toBe(0);
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expect(file.size).toBe(0);
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expect(file.type).toBe('');
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expect(file.name).toBe('test.jpg');
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expect(file.lastModified).toEqual(expect.any(Number));
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});
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it('should create empty file with type', () => {
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const file = new File([], 'test.jpg', {type: 'image/jpeg'});
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expect(file.type).toBe('image/jpeg');
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});
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it('should create empty file with lastModified', () => {
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const file = new File([], 'test.jpg', {lastModified: 1337});
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expect(file.lastModified).toBe(1337);
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});
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it('should throw on invalid arguments', () => {
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expect(() => new File()).toThrow();
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expect(() => new File([])).toThrow();
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});
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});
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