test(exception-propagation): add test for the uncaught Promise rejections handler when not in the pmjs environment

Author: Xmader

tests/js/uncaught-rejection-handler.bash

@@ -0,0 +1,53 @@
+#! /bin/bash
+#
+# @file        uncaught-rejection-handler.bash
+#              For testing if the actual JS error gets printed out for uncaught Promise rejections, 
+#              instead of printing out a Python `Future exception was never retrieved` error message when not in pmjs
+#
+# @author      Tom Tang ([email protected])
+# @date        June 2024
+
+set -u
+set -o pipefail
+
+panic()
+{
+  echo "FAIL: $*" >&2
+  exit 2
+}
+
+cd `dirname "$0"` || panic "could not change to test directory"
+
+code='
+import asyncio
+import pythonmonkey as pm
+
+async def pythonmonkey_main():
+  pm.eval("""void Promise.reject(new TypeError("abc"));""")
+  await pm.wait()
+
+asyncio.run(pythonmonkey_main())
+'
+
+OUTPUT=$(python -c "$code" \
+         < /dev/null 2>&1
+)
+
+echo "$OUTPUT" \
+| tr -d '\r' \
+| (grep -c 'Future exception was never retrieved' || true) \
+| while read qty
+  do
+    echo "$OUTPUT"
+    [ "$qty" != "0" ] && panic "There shouldn't be a 'Future exception was never retrieved' error massage"
+    break
+  done || exit $?
+
+echo "$OUTPUT" \
+| tr -d '\r' \
+| grep -c 'Uncaught TypeError: abc' \
+| while read qty
+  do
+    [ "$qty" != "1" ] && panic "It should print out 'Uncaught TypeError' directly"
+    break
+  done || exit $?