basic tests

Prep for v2.3.11 after I messed up v2.3.10 (#5068) #7605

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Run time

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Job	Run time
build (ubuntu-20.04, 3.9, unittest)	16m 47s
build (ubuntu-20.04, 3.9, search)	33m 2s
build (ubuntu-20.04, 3.9, docs)	17m 25s
build (ubuntu-20.04, 3.10, unittest)	16m 40s
build (ubuntu-20.04, 3.10, search)	34m 0s
build (ubuntu-20.04, 3.10, docs)	24m 20s
build (ubuntu-20.04, 3.11, unittest)	16m 55s
build (ubuntu-20.04, 3.11, search)	32m 37s
build (ubuntu-20.04, 3.11, docs)	31m 7s
deploy_documentation	0s
	3h 42m 53s