test: add few stream utils to common#31968

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lundibundi wants to merge 3 commits intonodejs:masterfrom lundibundi:add-test-common-stream-utils

+107-36

Commits on Mar 3, 2020

test: add collectStream and collectChildStreams utilities
lundibundi
committed
test: refactor few tests with collectStream/collectChildStreams utils
lundibundi
committed

Commits on Mar 4, 2020

fixup! test: add collectStream and collectChildStreams utilities
lundibundi
committed