Every time I run Karma "ng test" for my project, an error keeps popping up:
Error message: Failed - Template parse errors: 'mat-card' is not a known element
Interestingly enough, the application seems to work perfectly fine with the mat-card tag when we use "ng serve". We are currently utilizing angular 6 and would greatly appreciate any guidance on resolving this issue.
It's important to include all the required modules in your test spec that are used by your component file. One essential module you're missing in this case is MdCardModule.
import { MdCardModule } from '@angular/material';
imports: [
MdCardModule,
],
If you choose to ignore these elements, you can simply add
schemas: [ NO_ERRORS_SCHEMA ] // Although not recommended as it will hide all errors
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