mirror of https://github.com/status-im/metro.git
88 lines
2.1 KiB
JavaScript
88 lines
2.1 KiB
JavaScript
/**
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* Copyright (c) 2015-present, Facebook, Inc.
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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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* @flow
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* @format
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* @emails oncall+js_foundation
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*/
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'use strict';
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import type {BabelSourceMap} from '@babel/core';
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jest.mock('uglify-es', () => ({
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minify: jest.fn(code => {
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return {
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code: code.replace(/(^|\W)\s+/g, '$1'),
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map: {},
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};
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}),
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}));
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const minify = require('..');
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const {objectContaining} = jasmine;
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function getFakeMap(): BabelSourceMap {
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return {
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version: 3,
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sources: ['?'],
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mappings: '',
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names: [],
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};
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}
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describe('Minification:', () => {
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const filename = '/arbitrary/file.js';
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const code = 'arbitrary(code)';
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let map: BabelSourceMap;
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let uglify;
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beforeEach(() => {
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uglify = require('uglify-es');
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uglify.minify.mockClear();
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uglify.minify.mockReturnValue({code: '', map: '{}'});
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map = getFakeMap();
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});
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it('passes file name, code, and source map to `uglify`', () => {
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minify.withSourceMap(code, map, filename);
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expect(uglify.minify).toBeCalledWith(
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code,
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objectContaining({
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sourceMap: {
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content: map,
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includeSources: false,
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},
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}),
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);
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});
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it('passes code to `uglify` when minifying without source map', () => {
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minify.noSourceMap(code);
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expect(uglify.minify).toBeCalledWith(
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code,
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objectContaining({
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sourceMap: {
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content: undefined,
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includeSources: false,
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},
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}),
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);
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});
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it('returns the code provided by uglify', () => {
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uglify.minify.mockReturnValue({code, map: '{}'});
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const result = minify.withSourceMap('', getFakeMap(), '');
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expect(result.code).toBe(code);
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expect(minify.noSourceMap('')).toBe(code);
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});
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it('parses the source map object provided by uglify and sets the sources property', () => {
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uglify.minify.mockReturnValue({map: JSON.stringify(map), code: ''});
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const result = minify.withSourceMap('', getFakeMap(), filename);
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expect(result.map).toEqual({...map, sources: [filename]});
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});
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});
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