adblockpluscore test hang

[hfiguiere]

Environment

This in on stock Fedora 25. I don't have a macOS env yet to test.

How to reproduce

1. npm test

Observed behaviour

Test hang:

% npm test

> adblockpluscore@ test /home/hub/source/eyeo/adblockpluscore
> node test_runner.js

elemHideEmulation.js

I have seen it sometime not hang, but then it doesn't seem, to run any test.

Expected behaviour

Test go through.

Diagnostic

It seems to go on a loop where applyElemHideEmulation() gets called infinitely, because loading script for ElemHideEmulation seems to fail.

If I revert to revision c7ae7532578a, the test fail differently, with

Test failed: global failure: 
Failed assertion: SyntaxError: Expected an identifier but found 'rules' instead
  file:////home/hub/source/eyeo/adblockpluscore/chrome/content/elemHideEmulation.js:86

Test failed: Element hiding emulation: Verbatim property selector: 
Failed assertion: Died on test #1 global code@file:////home/hub/source/eyeo/adblockpluscore/test/browser/elemHideEmulation.js:123:11: Can't find variable: ElemHideEmulation
  applyElemHideEmulation@file:////home/hub/source/eyeo/adblockpluscore/test/browser/elemHideEmulation.js:96:48
  file:////home/hub/source/eyeo/adblockpluscore/test/browser/elemHideEmulation.js:129:27

I'll look at that as it should work. (with a fix)

[hfiguiere]

Revision 2fc6eeda3478 is causing the breakage as it uses syntax that does not go through with the tests... (let, for..in)

[hfiguiere]

Revision c7ae7532578a cause another breakage by not updating the test after an API change.

[abpbot]

A commit referencing this issue has landed:
​Issue 4962 - Fix the tests.