source helper.vim
call Setup()

set shell=foo

normal 5Gi*
execute 'GitGutterStageHunk'

call assert_equal('foo', &shell)  " NOTE: current test runner ignores v:errors so this line has no effect

set shell=/bin/bash
call DumpSigns('hunkStageSigns')
call DumpGitDiffStaged('hunkStageGitDiff')