Set Signal within Image onload event fails with NG0600 error about angular

[pkozlowski-opensource]

it works when not running in the test. it fails when running the test.

This is because your test resolves the image loading synchronously which means that your onload event handler runs as part of the effect defined in the constructor. In this sense your test and production code behave differently.

You've got several options to address the warning:

• make the test asynchronous;
• add the allowSignalWrites option;

Idle though - it would help debugging those scenarios if we could easily / quickly identify an effect that triggers a warning.

[pkozlowski-opensource]

Could you please share a reproduction scenario in a stackblitz? It is not clear when the loadImage is called / runs.

[nicolaric]

@pkozlowski-opensource here you go:
https://stackblitz.com/edit/stackblitz-starters-kvmfjv?file=src%2Fimage-crop%2Fimage-crop.component.ts

it works when not running in the test. it fails when running the test.