Microservices - Testing Microservices
How can you unit test a microservice method that depends on asynchronous calls to external APIs without slowing down your test suite?
How can you unit test a microservice method that depends on asynchronous calls to external APIs without slowing down your test suite?
hard📝 Trade-off Q9 of 15
Step-by-Step Solution
Solution:
Step 1: Identify asynchronous dependency in method
External API calls are asynchronous and slow down tests if real.Step 2: Use mocks returning resolved promises
Mocking with resolved promises simulates async calls instantly.Final Answer:
Mock the asynchronous API calls with resolved promises -> Option CQuick Check:
Mock async calls with resolved promises [OK]
Quick Trick: Mock async calls with resolved promises for speed [OK]
Common Mistakes:
- Using real API calls in unit tests
- Skipping async parts and missing coverage
- Running tests only in production
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