Angular 7 code jasmine is used for testing running karma Getting some errors please help me out? [closed]

1. When i run only one test case it run fine using fit, but when i run number of test cases together it gives me event object error thrown error for the specific components only.

2. How to test the functions which is using action and reducer for eg.

functionName(value): void { this.store.dispatch(new actionName(value)) }

Please help me to get the answer and pls give me some reference to learn angular more clearly thanking you!