[test] add a unit test for the LambdaHTTPServer Pool #594

Job	Run time
Semantic Version label check	4s
musl	1m 34s
Unit tests / Construct unit test matrix	4s
Soundness / Format check	40s
Soundness / Unacceptable language check	5s
Soundness / API breakage check	2m 29s
Soundness / Broken symlinks check	6s
Soundness / Shell check	36s
Soundness / Documentation check	1m 44s
Soundness / License headers check	6s
Soundness / YAML lint check	4s
Integration Tests / Test archive plugin (ResourcesPackaging)	2m 30s
Integration Tests / Test archive plugin (HelloWorld)	2m 37s
Integration Tests / No dependencies on Foundation	2m 3s
Integration Tests / Test Examples/APIGateway+LambdaAuthorizer on	2m 3s
Integration Tests / Test Examples/S3EventNotifier on	2m 2s
Integration Tests / Test Examples/BackgroundTasks on	1m 53s
Integration Tests / Test Examples/ResourcesPackaging on	1m 55s
Swift 6 Language Mode / Swift 6 language mode	1m 19s
Integration Tests / Test Examples/HelloWorld on	1m 47s
Integration Tests / Test Examples/APIGateway on	2m 1s
Integration Tests / Test Examples/S3_AWSSDK on	5m 49s
Integration Tests / Test Examples/Testing on	1m 58s
Soundness / Python lint check	5s
Integration Tests / Test Examples/Tutorial on	1m 54s
Integration Tests / Test Examples/S3_Soto on	7m 49s
Integration Tests / Test Examples/HelloJSON on	1m 46s
Integration Tests / Test Examples/Streaming on	1m 46s
Unit tests / Unit tests / Linux (nightly-main)	1m 49s
Unit tests / Unit tests / Linux (6.0)	1m 26s
Unit tests / Unit tests / Linux (nightly-next)	1m 48s
Unit tests / Unit tests / Linux (6.1)	1m 26s
	55m 18s

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