env GO111MODULE=off

# Coverage analysis should use 'set' mode by default,
# and should merge coverage profiles correctly.

[short] skip
[gccgo] skip # gccgo has no cover tool

go test -short -cover encoding/binary errors -coverprofile=$WORK/cover.out
! stderr '[^0-9]0\.0%'
! stdout '[^0-9]0\.0%'

grep -count=1 '^mode: set$' $WORK/cover.out
grep 'errors\.go' $WORK/cover.out
grep 'binary\.go' $WORK/cover.out

[!race] stop

go test -short -race -cover encoding/binary errors -coverprofile=$WORK/cover.out
! stderr '[^0-9]0\.0%'
! stdout '[^0-9]0\.0%'

grep -count=1 '^mode: atomic$' $WORK/cover.out
grep 'errors\.go' $WORK/cover.out
grep 'binary\.go' $WORK/cover.out