Refactor + tests (#6)

- Minor codebase clean-up
- Slight reorganisation of examples + tests so that we don't break stuff by accident
- CI tests

tests/run_tests.sh

@@ -0,0 +1,69 @@
+#!/usr/bin/env bash
+
+# Regression test harness for ReactICS BDD module
+# Compares current output against saved expected output
+
+set -uo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+ROOT_DIR="$(cd "$SCRIPT_DIR/.." && pwd)"
+REACTICS="$ROOT_DIR/reactics-bdd/reactics"
+EXPECTED_DIR="$SCRIPT_DIR/expected"
+
+PASS=0
+FAIL=0
+ERRORS=""
+
+run_test() {
+    local name="$1"
+    local expected_file="$2"
+    shift 2
+    local actual
+    actual=$("$@" 2>&1) || true
+    local expected
+    expected=$(cat "$expected_file")
+
+    if [[ "$actual" == "$expected" ]]; then
+        echo "  PASS: $name"
+        ((PASS++))
+    else
+        echo "  FAIL: $name"
+        diff <(echo "$expected") <(echo "$actual") | head -20
+        ((FAIL++))
+        ERRORS="$ERRORS\n  - $name"
+    fi
+}
+
+echo "Running ReactICS regression tests..."
+echo
+
+# --- tgc.drs tests ---
+echo "[tgc]"
+run_test "tgc print"      "$EXPECTED_DIR/tgc_print.txt"      "$REACTICS" -P examples/bdd/tgc.drs
+run_test "tgc reactions"   "$EXPECTED_DIR/tgc_reactions.txt"   "$REACTICS" -r examples/bdd/tgc.drs
+run_test "tgc states"      "$EXPECTED_DIR/tgc_states.txt"      "$REACTICS" -s examples/bdd/tgc.drs
+run_test "tgc mc (f1-f4)"  "$EXPECTED_DIR/tgc_mc.txt" \
+    bash -c 'for f in f1 f2 f3 f4; do '"$REACTICS"' -c $f examples/bdd/tgc.drs 2>&1; done'
+
+echo
+echo "[trivial]"
+run_test "trivial print"      "$EXPECTED_DIR/trivial_print.txt"      "$REACTICS" -P reactics-bdd/in/trivial.drs
+run_test "trivial reactions"  "$EXPECTED_DIR/trivial_reactions.txt"   "$REACTICS" -r reactics-bdd/in/trivial.drs
+run_test "trivial states"     "$EXPECTED_DIR/trivial_states.txt"      "$REACTICS" -s reactics-bdd/in/trivial.drs
+
+echo
+echo "[tgc4]"
+run_test "tgc4 print"      "$EXPECTED_DIR/tgc4_print.txt"      "$REACTICS" -P examples/bdd/tgc4.drs
+run_test "tgc4 states"     "$EXPECTED_DIR/tgc4_states.txt"      "$REACTICS" -s examples/bdd/tgc4.drs
+run_test "tgc4 mc (f1-f4)" "$EXPECTED_DIR/tgc4_mc.txt" \
+    bash -c 'for f in f1 f2 f3 f4; do '"$REACTICS"' -c $f examples/bdd/tgc4.drs 2>&1; done'
+
+echo
+echo "================================"
+echo "Results: $PASS passed, $FAIL failed"
+if [[ $FAIL -gt 0 ]]; then
+    echo -e "Failures:$ERRORS"
+    exit 1
+else
+    echo "All tests passed."
+fi