ability to run code and check output in tests

scripts/test

@@ -1,11 +1,31 @@
 #!/bin/sh
 SAMPLES=$(find playground/samples -name "*.newt")
-for i in tests/black/*.newt $SAMPLES aoc2024/*.newt; do
-  ./build/exec/newt $i
+total=0
+failed=0
+for fn in tests/*.newt ; do
+  total=$((total + 1))
+  echo Test $fn
+  bn=$(basename $fn)
+  ./build/exec/newt $fn -o out.js > tmp/${bn}.compile
   if [ $? != "0" ]; then
-    echo FAIL $i
-    exit -1
+    echo Compile failed for $fn
+    failed=$((failed + 1))
+    continue
+  fi
+  # if there is a golden file, run the code and compare output
+  if [ -f ${fn}.golden ]; then
+    bun run out.js > tmp/${bn}.out
+    if [ $? != "0" ]; then
+      echo Run failed for $fn
+      failed=$((failed + 1))
+      continue
+    fi
+    if ! diff -q tmp/${bn}.out ${fn}.golden; then
+      echo "Output mismatch for $fn"
+      failed=$((failed + 1))
+    fi
   fi
-  echo $?
 done
+echo "Total tests: $total"
+echo "Failed tests: $failed"