Add Intl[@@toStringTag] coverage

test/intl402/Intl/toStringTag/toString.js

@@ -0,0 +1,32 @@
+// Copyright (C) 2020 Alexey Shvayka. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-Intl-toStringTag
+description: >
+  Object.prototype.toString utilizes Intl[@@toStringTag] and doesn't special-case Intl namespace object.
+info: |
+  Object.prototype.toString ( )
+
+  [...]
+  14. Else, let builtinTag be "Object".
+  15. Let tag be ? Get(O, @@toStringTag).
+  16. If Type(tag) is not String, set tag to builtinTag.
+  17. Return the string-concatenation of "[object ", tag, and "]".
+
+  Intl [ @@toStringTag ]
+
+  The initial value of the @@toStringTag property is the String value "Intl".
+features: [Symbol.toStringTag]
+---*/
+
+assert.sameValue(Intl.toString(), "[object Intl]");
+assert.sameValue(Object.prototype.toString.call(Intl), "[object Intl]");
+
+Object.defineProperty(Intl, Symbol.toStringTag, { value: "test262" });
+assert.sameValue(Intl.toString(), "[object test262]");
+assert.sameValue(Object.prototype.toString.call(Intl), "[object test262]");
+
+assert(delete Intl[Symbol.toStringTag]);
+assert.sameValue(Intl.toString(), "[object Object]");
+assert.sameValue(Object.prototype.toString.call(Intl), "[object Object]");

test/intl402/Intl/toStringTag/toStringTag.js

@@ -0,0 +1,23 @@
+// Copyright (C) 2020 Alexey Shvayka. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-Intl-toStringTag
+description: >
+  Property descriptor of Intl[@@toStringTag].
+info: |
+  Intl [ @@toStringTag ]
+
+  The initial value of the @@toStringTag property is the String value "Intl".
+
+  This property has the attributes { [[Writable]]: false, [[Enumerable]]: false, [[Configurable]]: true }.
+features: [Symbol.toStringTag]
+includes: [propertyHelper.js]
+---*/
+
+verifyProperty(Intl, Symbol.toStringTag, {
+  value: "Intl",
+  writable: false,
+  enumerable: false,
+  configurable: true,
+});