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37b7ea3b0a
This is a small refactoring commit that extracts the MIME related function from utils.js into a new file called mime.js, and stores the default image MIME type there as a constant, to avoid duplicating it in multiple parts of the code. Change-Type: patch Signed-off-by: Juan Cruz Viotti <jv@jviotti.com>
80 lines
2.1 KiB
JavaScript
80 lines
2.1 KiB
JavaScript
/*
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* Copyright 2016 resin.io
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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'use strict';
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const m = require('mochainon');
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const StreamReadable = require('stream').Readable;
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const utils = require('../../lib/image-stream/utils');
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describe('ImageStream: Utils', function() {
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describe('.extractStream()', function() {
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describe('given a stream that emits data', function() {
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beforeEach(function() {
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this.stream = new StreamReadable();
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/* eslint-disable no-underscore-dangle */
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this.stream._read = function() {
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/* eslint-enable no-underscore-dangle */
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this.push(Buffer.from('Hello', 'utf8'));
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this.push(Buffer.from(' ', 'utf8'));
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this.push(Buffer.from('World', 'utf8'));
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this.push(null);
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};
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});
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it('should yield the stream data', function() {
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return utils.extractStream(this.stream).then((data) => {
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m.chai.expect(data.toString()).to.equal('Hello World');
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});
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});
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});
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describe('given a stream that throws an error', function() {
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beforeEach(function() {
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this.stream = new StreamReadable();
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/* eslint-disable no-underscore-dangle */
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this.stream._read = function() {
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/* eslint-enable no-underscore-dangle */
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this.emit('error', new Error('stream error'));
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};
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});
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it('should be rejected with the error', function() {
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return utils.extractStream(this.stream).catch((error) => {
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m.chai.expect(error).to.be.an.instanceof(Error);
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m.chai.expect(error.message).to.equal('stream error');
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});
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});
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});
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});
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});
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