Regression test of Set.prototype.size getter.

Author: iamstolis

graal-js/src/com.oracle.truffle.js.test/js/GR-45497.js

@@ -0,0 +1,18 @@
+/*
+ * Copyright (c) 2023, 2023, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * Licensed under the Universal Permissive License v 1.0 as shown at http://oss.oracle.com/licenses/upl.
+ */
+
+/**
+ * Regression test of Set.prototype.size getter.
+ */
+
+load("assert.js");
+
+const sizeOfThisSet = Object.getOwnPropertyDescriptor(Set.prototype, 'size').get;
+
+assertThrows(() => sizeOfThisSet.call({}), TypeError);
+assertSame(0, sizeOfThisSet.call(new Set()));
+assertThrows(() => sizeOfThisSet.call(new Map()), TypeError);