Add Unit test for cfg_time_start_trig #830

Job	Run time
Run CI / Build / Build	35s
Run CI / Generate docs / Generate docs	59s
Run CI / Run unit tests / Run unit tests (ubuntu-latest, 3.8)	49s
Run CI / Run unit tests / Run unit tests (ubuntu-latest, 3.9)	46s
Run CI / Run unit tests / Run unit tests (ubuntu-latest, 3.10)	45s
Run CI / Run unit tests / Run unit tests (ubuntu-latest, 3.11)	40s
Run CI / Run unit tests / Run unit tests (ubuntu-latest, 3.12)	1m 7s
Run CI / Run unit tests / Run unit tests (windows-latest, 3.8)	2m 0s
Run CI / Run unit tests / Run unit tests (windows-latest, 3.9)	1m 37s
Run CI / Run unit tests / Run unit tests (windows-latest, 3.10)	1m 37s
Run CI / Run unit tests / Run unit tests (windows-latest, 3.11)	1m 31s
Run CI / Run unit tests / Run unit tests (windows-latest, 3.12)	2m 12s
Run CI / Run system tests / Run system tests (win-10-py32)	27m 21s
Run CI / Run system tests / Run system tests (win-10-py64)	26m 54s
Run CI / Report test results / Report test results	10s
	1h 9m 3s

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