1 files changed, 16 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/statements/class/subclass-builtins/subclass-String.js b/js/src/tests/test262/language/statements/class/subclass-builtins/subclass-String.js
new file mode 100644
index 0000000000..8884f5bacc
--- /dev/null
+++ b/js/src/tests/test262/language/statements/class/subclass-builtins/subclass-String.js
@@ -0,0 +1,16 @@
+// This file was procedurally generated from the following sources:
+// - src/subclass-builtins/String.case
+// - src/subclass-builtins/default/statement.template
+/*---
+description: new SubString() instanceof String (Subclass instanceof Heritage)
+flags: [generated]
+---*/
+
+
+class Subclass extends String {}
+
+const sub = new Subclass();
+assert(sub instanceof Subclass);
+assert(sub instanceof String);
+
+reportCompare(0, 0);