1 files changed, 23 insertions, 0 deletions
diff --git a/js/xpconnect/tests/unit/test_import_syntax_error.js b/js/xpconnect/tests/unit/test_import_syntax_error.js
new file mode 100644
index 0000000000..bfdcaf9e04
--- /dev/null
+++ b/js/xpconnect/tests/unit/test_import_syntax_error.js
@@ -0,0 +1,23 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+
+add_task(async function() {
+  Assert.throws(
+    () => ChromeUtils.import("resource://test/error_import.sys.mjs"),
+    /use ChromeUtils.importESModule instead/,
+    "Error should be caught and suggest ChromeUtils.importESModule"
+  );
+
+  Assert.throws(
+    () => ChromeUtils.import("resource://test/error_export.sys.mjs"),
+    /use ChromeUtils.importESModule instead/,
+    "Error should be caught and suggest ChromeUtils.importESModule"
+  );
+
+  Assert.throws(
+    () => ChromeUtils.import("resource://test/error_other.sys.mjs"),
+    /expected expression, got end of script/,
+    "Error should be caught but should not suggest ChromeUtils.importESModule"
+  );
+});