1 files changed, 31 insertions, 0 deletions
diff --git a/js/src/tests/test262/intl402/NumberFormat/prototype/formatRange/builtin.js b/js/src/tests/test262/intl402/NumberFormat/prototype/formatRange/builtin.js
new file mode 100644
index 0000000000..91baf121e3
--- /dev/null
+++ b/js/src/tests/test262/intl402/NumberFormat/prototype/formatRange/builtin.js
@@ -0,0 +1,31 @@
+// Copyright (C) 2021 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-ecmascript-standard-built-in-objects
+description: >
+    Tests that the Intl.NumberFormat.prototype.formatRange function meets the
+    requirements for built-in objects defined by the ECMAScript Language
+    Specification.
+includes: [isConstructor.js]
+features: [Reflect.construct,Intl.NumberFormat-v3]
+---*/
+
+const formatRange = Intl.NumberFormat.prototype.formatRange;
+
+assert.sameValue(Object.prototype.toString.call(formatRange), "[object Function]",
+                 "The [[Class]] internal property of a built-in function must be " +
+                 "\"Function\".");
+
+assert(Object.isExtensible(formatRange),
+       "Built-in objects must be extensible.");
+
+assert.sameValue(Object.getPrototypeOf(formatRange), Function.prototype);
+
+assert.sameValue(formatRange.hasOwnProperty("prototype"), false,
+                 "Built-in functions that aren't constructors must not have a prototype property.");
+
+assert.sameValue(isConstructor(formatRange), false,
+                 "Built-in functions don't implement [[Construct]] unless explicitly specified.");
+
+reportCompare(0, 0);