test.sh

#!/bin/bash
set -e -o pipefail
 
set +e
{ echo "test"; echo "test2"; } | cat > /dev/null
echo $?
set -e
 
set +e
{ echo "test"; echo "test2"; } > /dev/null
echo $?
set -e
 
set +e
{ echo "test"; false && echo "test2"; } | cat > /dev/null
echo $?
set -e
 
set +e
{ echo "test"; false && echo "test2"; } > /dev/null
echo $?
set -e
 
# $ ./test.sh
# 0
# 0
# 1
# 1