#!/bin/sh
# Tests for bin/newer-version.
#
# Extracted from bin/doctor (#30) once `task check` needed the same comparison
# (#34): check asserted plugin.json == latest tag, which is red on any checkout
# that has not fetched the tag the CI tagger just pushed. The assertion it
# actually wants is "not behind", and ordering needs a real comparison.

set -u

ROOT=$(CDPATH= cd -- "$(dirname -- "$0")/.." && pwd)
SUT="$ROOT/bin/newer-version"

pass=0
fail=0

if [ ! -f "$SUT" ]; then
  printf 'FAIL: %s does not exist\n' "$SUT"
  exit 1
fi

# expect <winner> <a> <b> <label>
expect() {
  _got=$(sh "$SUT" "$2" "$3")
  if [ "$_got" = "$1" ]; then
    pass=$((pass + 1)); printf '  ok   %s\n' "$4"
  else
    fail=$((fail + 1)); printf '  FAIL %s (newer-version %s %s -> %s, want %s)\n' "$4" "$2" "$3" "$_got" "$1"
  fi
}

expect 0.9.0  0.9.0  0.8.5  'higher minor wins, left'
expect 0.9.0  0.8.5  0.9.0  'higher minor wins, right'
expect 0.8.10 0.8.10 0.8.9  'numeric compare, not lexical — 10 beats 9'
expect 1.0.0  1.0.0  0.99.99 'major dominates'
expect 0.8.5  0.8.5  0.8.5  'equal returns the value'
expect 0.9.1  0.9.1  0.9    'a missing component counts as zero'
expect 0.9    0.9    0.9.0  'equal with a missing component returns the left, per contract'

printf '\nnewer_version: %d passed, %d failed\n' "$pass" "$fail"
[ "$fail" -eq 0 ]