TST: Series construction from ExtensionDtype scalar#37989

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jreback merged 8 commits intopandas-dev:masterfrom

arw2019:GH28401

Nov 24, 2020

Commits on Nov 21, 2020

add tests
arw2019
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Commits on Nov 23, 2020

Merge branch 'master' of https://github.com/pandas-dev/pandas into GH28401
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