test: validate arguments to mustCall(), fix incorrect tests#10692

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nfriedly wants to merge 2 commits intonodejs:masterfrom nfriedly:fix-test-http-response-statuscode

+24-13

Commits on Jan 8, 2017

fix misplaced ) in http response statuscode test
nfriedly
committed

Commits on Jan 9, 2017

validate 'expected' argument to mustCall()
nfriedly
committed