Karma: Chrome no longer supports HTML imports as of version 80

[dark-panda]

It seems that having removed HTML imports in Chrome 80 breaks things involving fetching HTML files via <link href="%s.html" rel="import"> style imports. It appears that the files are still fetched, but they are no longer executed, leaving karma to show 0 tests being run in my setup. Using Chrome 79 and below works fine.

[dark-panda]

More details at

https://groups.google.com/a/chromium.org/forum/#!topic/blink-dev/h-JwMiPUnuU/discussion

https://www.chromestatus.com/feature/5144752345317376

https://bugs.chromium.org/p/chromium/issues/detail?id=240592

[dark-panda]

Until a fix can be applied, you can add a custom launcher that adds the --enable-blink-features=HTMLImports flag to allow HTML imports again.

[vorillaz]

For anyone stuck with this one, we have managed to run our specs using a Chromium binary.

1. Download Chromium 79 or older for your platform from https://commondatastorage.googleapis.com/chromium-browser-snapshots/index.html
2. Unzip the folder in a local directory e.g. /Users/theo/Downloads/chrome-mac/
3. Set CHROME_BIN=/Users/theo/Downloads/chrome-mac/Chromium.app/Contents/MacOS/Chromium yarn test

[devoto13]

What do you guys expect Karma to do about it?

This feature has been removed from the only browser where it was supported and HTML Imports feature is obsolete. So the best we can do is to add a notice to the documentation that it does not work in the latest browsers.

[devoto13]

Depending on your use case you may try setting type to dom to inline the imported files, setting the flag or adding a polyfill for HTLM imports.

[karmarunnerbot]

:tada: This issue has been resolved in version 5.2.2 :tada:

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

Your semantic-release bot :package::rocket: