Test "set -e" behavior inside a function in Bash

errexit.sh

#!/bin/bash

# set -x

function test_function
{
  set -e
  echo "opts in test_function: $-"
  false
  echo pass through
  return 0
}

echo "opts before: $-"

if ! eval test_function; then
  echo test_function failed
else
  echo test_function passed
fi

echo "opts after: $-"

false

echo end