Angular - Testing
Identify the issue in this Angular test setup:
TestBed.configureTestingModule({});
const service = TestBed.inject(NotificationService);Identify the issue in this Angular test setup:
medium📝 Debug Q6 of 15
Step-by-Step Solution
Solution:
Step 1: Check providers in configureTestingModule
The providers array is empty, so NotificationService is not registered.Step 2: Consequence of missing provider
Injecting a service not provided causes an error at runtime.Final Answer:
NotificationService is not provided in the testing module -> Option CQuick Check:
Always provide services before injecting [OK]
Quick Trick: Always provide services in TestBed before injecting [OK]
Common Mistakes:
- Assuming TestBed.inject() is deprecated
- Thinking BrowserModule import is required for services
- Creating service instance manually instead of DI
Master "Testing" in Angular
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