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I have a child component that is a dropdown select and I need to add formControlName from ReactiveForms, but this dropdown is not implementing the ControlValueAccesor. When I go to test with Karma, the following error appears:

TypeError: dir.valueAccessor.registerOnTouched is not a function

I tried to mock with jasmine but error continues to appear.

PS: I can't modify the child component

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  • are you trying to add formControlName and it works in runtime, but broken in tests? Commented Mar 13 at 14:38
  • @IKERAGI please share the minimal reproducible code, if possible a stackblitz where the issue happens Commented Mar 13 at 17:06
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