#!/bin/sh
set -eu
tool=${1:-zig-out/bin/have}
mkdir -p .zig-cache/have-smoke/bin
cat > .zig-cache/have-smoke/bin/ok <<'SCRIPT'
#!/bin/sh
exit 0
SCRIPT
chmod +x .zig-cache/have-smoke/bin/ok
printf 'nope' > .zig-cache/have-smoke/bin/not-exec

PATH=.zig-cache/have-smoke/bin "$tool" > .zig-cache/have-list.out
grep -q '^ok$' .zig-cache/have-list.out
if grep -q '^not-exec$' .zig-cache/have-list.out; then
  echo 'have: listed non-executable file' >&2
  exit 1
fi
PATH=.zig-cache/have-smoke/bin "$tool" ok missing > .zig-cache/have-query.out && {
  echo 'have: query succeeded despite missing command' >&2
  exit 1
}
grep -q '^ok$' .zig-cache/have-query.out
if grep -q '^missing$' .zig-cache/have-query.out; then
  echo 'have: printed missing command' >&2
  exit 1
fi

"$tool" --help > .zig-cache/have-help.out 2> .zig-cache/have-help.err
grep -q '^usage: have \[NAME\.\.\.\]' .zig-cache/have-help.out
if [ -s .zig-cache/have-help.err ]; then
  echo 'have: --help wrote stderr' >&2
  exit 1
fi
"$tool" -h > .zig-cache/have-help-short.out 2> .zig-cache/have-help-short.err
grep -q '^usage: have \[NAME\.\.\.\]' .zig-cache/have-help-short.out
if [ -s .zig-cache/have-help-short.err ]; then
  echo 'have: -h wrote stderr' >&2
  exit 1
fi