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chore: do not try/catch buffer.concat (#1575)

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Pavel Feldman 2020-03-27 15:16:17 -07:00 committed by GitHub
parent e796bfd815
commit 4e89939ece
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3 changed files with 7 additions and 24 deletions
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13
src/chromium/crBrowser.ts
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@ -223,14 +223,13 @@ export class CRBrowser extends platform.EventEmitter implements Browser {
async stopTracing(): Promise<platform.BufferType> {
assert(this._tracingClient, 'Tracing was not started.');
let fulfill: (buffer: platform.BufferType) => void;
const contentPromise = new Promise<platform.BufferType>(x => fulfill = x);
this._tracingClient.once('Tracing.tracingComplete', event => {
readProtocolStream(this._tracingClient!, event.stream!, this._tracingPath).then(fulfill);
});
await this._tracingClient.send('Tracing.end');
const [event] = await Promise.all([
new Promise(f => this._tracingClient!.once('Tracing.tracingComplete', f)),
this._tracingClient.send('Tracing.end')
]);
const result = await readProtocolStream(this._tracingClient, (event as any).stream!, this._tracingPath);
this._tracingRecording = false;
return contentPromise;
return result;
}
isConnected(): boolean {

7
src/chromium/crProtocolHelper.ts
View file

@ -78,12 +78,7 @@ export async function readProtocolStream(client: CRSession, handle: string, path
if (path)
await platform.closeFdAsync(fd!);
await client.send('IO.close', {handle});
let resultBuffer = null;
try {
resultBuffer = platform.Buffer.concat(bufs);
} finally {
return resultBuffer!;
}
return platform.Buffer.concat(bufs);
}
export function toConsoleMessageLocation(stackTrace: Protocol.Runtime.StackTrace | undefined) {

11
test/chromium/tracing.spec.js
View file

@ -75,17 +75,6 @@ module.exports.describe = function({testRunner, expect, defaultBrowserOptions, b
const trace = await browser.stopTracing();
expect(trace).toBeTruthy();
});
it('should return null in case of Buffer error', async({browser, page, server}) => {
await browser.startTracing(page, {screenshots: true});
await page.goto(server.PREFIX + '/grid.html');
const oldBufferConcat = Buffer.concat;
Buffer.concat = bufs => {
throw new Error('Buffer.concat fake error, should be caught by playwright');
};
const trace = await browser.stopTracing();
expect(trace).toEqual(null);
Buffer.concat = oldBufferConcat;
});
it('should support a buffer without a path', async({browser, page, server}) => {
await browser.startTracing(page, {screenshots: true});
await page.goto(server.PREFIX + '/grid.html');