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test/apps/basics is non-deterministic

See original GitHub issue

Describe the bug I’ve encountered this twice now modifying unrelated files on two different branches.

Logs

CI logs

> test-basics@0.0.2 test /home/runner/work/kit/kit/test/apps/basics
> node test

dev
 dev  [snowpack] ! building dependencies...
[snowpack] ✔ dependencies ready! [1.09s]
  http://localhost:3001 • http://10.1.0.4:3001
  Server started.


• ✘ • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •   (101 / 102)

   FAIL  dev  "announces client-side navigation [js]"
    Expected values to be deeply equal:  (equal)

        ++Navigated·to·b    (Expected)
        --                  (Actual)
          ^^^^^^^^^^^^^^
    at assert (file:///home/runner/work/kit/kit/node_modules/.pnpm/uvu@0.6.0-next.1/node_modules/uvu/assert/index.mjs:31:8)
    at Module.equal (file:///home/runner/work/kit/kit/node_modules/.pnpm/uvu@0.6.0-next.1/node_modules/uvu/assert/index.mjs:43:2)
    at file:///home/runner/work/kit/kit/test/apps/basics/src/routes/accessibility/__tests__.js:41:11
    at async Object.handler (file:///home/runner/work/kit/kit/test/runner.js:113:7)
    at async Number.runner (file:///home/runner/work/kit/kit/node_modules/.pnpm/uvu@0.6.0-next.1/node_modules/uvu/dist/index.mjs:78:5)
    at async Module.exec (file:///home/runner/work/kit/kit/node_modules/.pnpm/uvu@0.6.0-next.1/node_modules/uvu/dist/index.mjs:132:33)
    at async runner (file:///home/runner/work/kit/kit/test/runner.js:180:2)

To Reproduce Unknown. It’s some sort of race condition in the basics test.

Expected behavior Deterministic behavior.

Additional context First encountered in #402, then in #403. It’s most likely related to the fact that the test involves an await sleep(50):

https://github.com/sveltejs/kit/blob/67ddeeae1b9f1339e569ca8684e815928a755bdf/test/apps/basics/src/routes/accessibility/__tests__.js#L39-L41

Strongly related to #213.

Issue Analytics

State:
Created 3 years ago
Comments:12 (12 by maintainers)

Top GitHub Comments

2reactions

Conduitrycommented, Mar 17, 2021

And the tests were never flaky again, the end

0reactions

GrygrFlzrcommented, Mar 17, 2021

Farewell, angry red cross, I hope I never see you again.

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