6a015588b9
The following cases are excluded in the patch: - The Firefox PDF Viewer, since it has been fixed on the platform side already; please see https://bugzilla.mozilla.org/show_bug.cgi?id=1683940 - The `PDFNodeStream`-implementation, used in Node.js environments, since after recent changes that code only supports `file://`-URLs. Also updates the `PDFNetworkStreamFullRequestReader.read`-method to await the headers before returning any data, similar to the implementation in `src/display/fetch_stream.js`. *Note:* The relevant unit-tests are updated to await the `headersReady` Promise before dispatching range requests, since that's consistent with the actual usage in the `src/`-folder.
119 lines
3.6 KiB
JavaScript
119 lines
3.6 KiB
JavaScript
/* Copyright 2017 Mozilla Foundation
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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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import { AbortException } from "../../src/shared/util.js";
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import { PDFNetworkStream } from "../../src/display/network.js";
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describe("network", function () {
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const pdf1 = new URL("../pdfs/tracemonkey.pdf", window.location).href;
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const pdf1Length = 1016315;
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it("read without stream and range", async function () {
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const stream = new PDFNetworkStream({
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url: pdf1,
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rangeChunkSize: 65536,
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disableStream: true,
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disableRange: true,
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});
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const fullReader = stream.getFullReader();
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let isStreamingSupported, isRangeSupported;
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await fullReader.headersReady.then(function () {
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isStreamingSupported = fullReader.isStreamingSupported;
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isRangeSupported = fullReader.isRangeSupported;
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});
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let len = 0,
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count = 0;
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const read = function () {
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return fullReader.read().then(function (result) {
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if (result.done) {
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return undefined;
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}
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count++;
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len += result.value.byteLength;
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return read();
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});
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};
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await read();
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expect(len).toEqual(pdf1Length);
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expect(count).toEqual(1);
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expect(isStreamingSupported).toEqual(false);
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expect(isRangeSupported).toEqual(false);
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});
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it("read custom ranges", async function () {
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// We don't test on browsers that don't support range request, so
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// requiring this test to pass.
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const rangeSize = 32768;
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const stream = new PDFNetworkStream({
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url: pdf1,
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length: pdf1Length,
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rangeChunkSize: rangeSize,
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disableStream: true,
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disableRange: false,
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});
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const fullReader = stream.getFullReader();
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let isStreamingSupported, isRangeSupported, fullReaderCancelled;
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await fullReader.headersReady.then(function () {
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isStreamingSupported = fullReader.isStreamingSupported;
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isRangeSupported = fullReader.isRangeSupported;
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// we shall be able to close the full reader without issues
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fullReader.cancel(new AbortException("Don't need fullReader."));
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fullReaderCancelled = true;
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});
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// Skipping fullReader results, requesting something from the PDF end.
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const tailSize = pdf1Length % rangeSize || rangeSize;
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const range1Reader = stream.getRangeReader(
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pdf1Length - tailSize - rangeSize,
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pdf1Length - tailSize
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);
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const range2Reader = stream.getRangeReader(
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pdf1Length - tailSize,
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pdf1Length
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);
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const result1 = { value: 0 },
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result2 = { value: 0 };
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const read = function (reader, lenResult) {
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return reader.read().then(function (result) {
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if (result.done) {
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return undefined;
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}
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lenResult.value += result.value.byteLength;
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return read(reader, lenResult);
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});
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};
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await Promise.all([
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read(range1Reader, result1),
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read(range2Reader, result2),
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]);
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expect(result1.value).toEqual(rangeSize);
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expect(result2.value).toEqual(tailSize);
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expect(isStreamingSupported).toEqual(false);
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expect(isRangeSupported).toEqual(true);
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expect(fullReaderCancelled).toEqual(true);
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});
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});
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