basic tests

Prep for v2.3.11 after I messed up v2.3.10 (#5068) #7606

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Run time

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Job	Run time
build (ubuntu-20.04, 3.9, unittest)	17m 45s
build (ubuntu-20.04, 3.9, search)	32m 47s
build (ubuntu-20.04, 3.9, docs)	28m 45s
build (ubuntu-20.04, 3.10, unittest)	17m 21s
build (ubuntu-20.04, 3.10, search)	33m 52s
build (ubuntu-20.04, 3.10, docs)	18m 4s
build (ubuntu-20.04, 3.11, unittest)	17m 9s
build (ubuntu-20.04, 3.11, search)	31m 57s
build (ubuntu-20.04, 3.11, docs)	19m 14s
deploy_documentation	0s
	3h 36m 54s