Can't bind to 'matMenuTriggerFor' since it isn't a known property of 'button'

Question

I\'m getting following error when I try to test an angular component:

Error while running jest tests:

Can\'t bind to \'matMenuTriggerFor\' since it i         


        

Answer 1

I got this (and several other errors) because I failed to add the component to the declarations array in the lib.module.ts file.