You want to test a service method that makes two HTTP GET requests sequentially. How should you use HttpTestingController to verify both calls?

hard📝 component behavior Q8 of 15

Angular - Testing

You want to test a service method that makes two HTTP GET requests sequentially. How should you use HttpTestingController to verify both calls?

ACall <code>expectOne</code> twice, once for each URL, and flush responses separately

BCall <code>expectOne</code> once with a combined URL string for both requests

CCall <code>expectOne</code> once and flush an array of responses

DCall <code>verify</code> twice, once after each request

Step-by-Step Solution

Solution:

Step 1: Understand multiple HTTP calls in tests
Each HTTP call must be matched by a separate expectOne call.
Step 2: Flush responses individually
Flush each request separately to simulate server responses.
Final Answer:
Call expectOne twice, once for each URL, and flush responses separately -> Option A
Quick Check:
Multiple requests = multiple expectOne and flush calls [OK]

Quick Trick: Match and flush each HTTP call separately with expectOne [OK]

Common Mistakes:

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