#!/usr/bin/env bash
# Q2: compares the real junit-jupiter-api 5.14.4 and 6.1.3 jars. Writes output/q02-jar-comparison.txt.
# Needs JDK (javap, unzip) and Maven. Downloads both jars into the local Maven repository.
set -euo pipefail
cd "$(dirname "$0")/.."
unset JAVA_TOOL_OPTIONS
REPO="${HOME}/.m2/repository"
OUT=output/q02-jar-comparison.txt
TMP="$(mktemp -d)"
: > "$OUT"
for v in 5.14.4 6.1.3; do
  mvn -B -q dependency:get -Dartifact="org.junit.jupiter:junit-jupiter-api:$v" >/dev/null
  jar="$REPO/org/junit/jupiter/junit-jupiter-api/$v/junit-jupiter-api-$v.jar"
  mkdir -p "$TMP/$v"
  unzip -q -o "$jar" 'org/junit/jupiter/api/Test.class' -d "$TMP/$v"
  major=$(javap -v -cp "$TMP/$v" org.junit.jupiter.api.Test | grep 'major version' | awk '{print $3}')
  alpha=$(unzip -l "$jar" | grep -c 'MethodOrderer\$Alphanumeric' || true)
  echo "junit-jupiter-api $v : class-file major version $major (Java $((major-44))), MethodOrderer\$Alphanumeric entries in jar: $alpha" | tee -a "$OUT"
done
rm -rf "$TMP"