[BUG] - TypeError: Cannot read property 'push' of undefined - When restarting tests

[mwhebert]

Context:

• Playwright Version: 1.0.2
• Operating System: Windows,
• Node version: 10.20.1
• Browser: Chromium
• Extra: using with jest-playwright

Code Snippet

I don't have a short code snippet but do have a stacktrace (below)

Describe the bug

I will run a set of tests and then "npm run test" again will 'sometimes' cause the exception below.

F:\Dev\pw_test\node_modules\playwright-core\lib\server\chromium.js:225
            session.queue.push(parsedMessage);
                          ^

TypeError: Cannot read property 'push' of undefined
    at WebSocket.socket.on (F:\Dev\pw_test\node_modules\playwright-core\lib\server\chromium.js:225:27)        
    at WebSocket.emit (events.js:198:13)
    at Receiver.receiverOnMessage (F:\Dev\pw_test\node_modules\ws\lib\websocket.js:789:20)
    at Receiver.emit (events.js:198:13)
    at Receiver.dataMessage (F:\Dev\pw_test\node_modules\ws\lib\receiver.js:422:14)
    at Receiver.getData (F:\Dev\pw_test\node_modules\ws\lib\receiver.js:352:17)
    at Receiver.startLoop (F:\Dev\pw_test\node_modules\ws\lib\receiver.js:138:22)
    at Receiver._write (F:\Dev\pw_test\node_modules\ws\lib\receiver.js:74:10)
    at doWrite (_stream_writable.js:415:12)
    at writeOrBuffer (_stream_writable.js:399:5)

[aslushnikov]

@pavelfeldman: I'm confused. Maybe you have any ideas?

[mxschmitt]

@mwhebert can you try the latest beta version? npm install playwright@next

Seems to be related to this issue: playwright-community/jest-playwright#158 and will be fixed in the next release.

[mwhebert]

Not seeing this after using latest - Thanks!