Add Unit test for cfg_time_start_trig #846

Job	Run time
Run CI / Build / Build	36s
Run CI / Generate docs / Generate docs	1m 3s
Run CI / Run unit tests / Run unit tests (ubuntu-latest, 3.8)	45s
Run CI / Run unit tests / Run unit tests (ubuntu-latest, 3.9)	44s
Run CI / Run unit tests / Run unit tests (ubuntu-latest, 3.10)	52s
Run CI / Run unit tests / Run unit tests (ubuntu-latest, 3.11)	52s
Run CI / Run unit tests / Run unit tests (ubuntu-latest, 3.12)	58s
Run CI / Run unit tests / Run unit tests (windows-latest, 3.8)	1m 18s
Run CI / Run unit tests / Run unit tests (windows-latest, 3.9)	1m 20s
Run CI / Run unit tests / Run unit tests (windows-latest, 3.10)	1m 14s
Run CI / Run unit tests / Run unit tests (windows-latest, 3.11)	1m 23s
Run CI / Run unit tests / Run unit tests (windows-latest, 3.12)	1m 44s
Run CI / Run system tests / Run system tests (win-10-py32)	28m 38s
Run CI / Run system tests / Run system tests (win-10-py64)	27m 15s
Run CI / Report test results / Report test results	18s
	1h 9m 0s

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