From 904d90d0d6f9a7f6c2da24348960a6d51ff28dc1 Mon Sep 17 00:00:00 2001
From: Robin Templeton <robin@igalia.com>
Date: Thu, 31 May 2018 14:57:34 -0400
Subject: [PATCH] Add Object.prototype.toString tests for BigInt.
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Reported by André Bargull in
<https://bugzilla.mozilla.org/show_bug.cgi?id=1464758>.
---
 .../toString/symbol-tag-non-str-bigint.js     | 44 +++++++++++++++++++
 .../toString/symbol-tag-override-bigint.js    | 19 ++++++++
 2 files changed, 63 insertions(+)
 create mode 100644 test/built-ins/Object/prototype/toString/symbol-tag-non-str-bigint.js
 create mode 100644 test/built-ins/Object/prototype/toString/symbol-tag-override-bigint.js

diff --git a/test/built-ins/Object/prototype/toString/symbol-tag-non-str-bigint.js b/test/built-ins/Object/prototype/toString/symbol-tag-non-str-bigint.js
new file mode 100644
index 0000000000..6617f74fbb
--- /dev/null
+++ b/test/built-ins/Object/prototype/toString/symbol-tag-non-str-bigint.js
@@ -0,0 +1,44 @@
+// Copyright (C) 2018 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-object.prototype.tostring
+description: Non-string values of `@@toStringTag` property are ignored
+info: |
+    14. Else, let builtinTag be "Object".
+    15. Let tag be ? Get(O, @@toStringTag).
+    16. If Type(tag) is not String, let tag be builtinTag.
+    17. Return the string-concatenation of "[object ", tag, and "]".
+features: [BigInt, Symbol.toStringTag]
+---*/
+
+let custom1 = BigInt(0);
+let custom2 = Object(BigInt(0));
+
+Object.defineProperty(BigInt.prototype, Symbol.toStringTag, {value: undefined});
+assert.sameValue(Object.prototype.toString.call(custom1), '[object Object]');
+assert.sameValue(Object.prototype.toString.call(custom2), '[object Object]');
+
+Object.defineProperty(BigInt.prototype, Symbol.toStringTag, {value: null});
+assert.sameValue(Object.prototype.toString.call(custom1), '[object Object]');
+assert.sameValue(Object.prototype.toString.call(custom2), '[object Object]');
+
+Object.defineProperty(BigInt.prototype, Symbol.toStringTag, {value: Symbol.toStringTag});
+assert.sameValue(Object.prototype.toString.call(custom1), '[object Object]');
+assert.sameValue(Object.prototype.toString.call(custom2), '[object Object]');
+
+Object.defineProperty(BigInt.prototype, Symbol.toStringTag, {value: 86});
+assert.sameValue(Object.prototype.toString.call(custom1), '[object Object]');
+assert.sameValue(Object.prototype.toString.call(custom2), '[object Object]');
+
+Object.defineProperty(BigInt.prototype, Symbol.toStringTag, {value: new String('test262')});
+assert.sameValue(Object.prototype.toString.call(custom1), '[object Object]');
+assert.sameValue(Object.prototype.toString.call(custom2), '[object Object]');
+
+Object.defineProperty(BigInt.prototype, Symbol.toStringTag, {value: {}});
+assert.sameValue(Object.prototype.toString.call(custom1), '[object Object]');
+assert.sameValue(Object.prototype.toString.call(custom2), '[object Object]');
+
+Object.defineProperty(BigInt.prototype, Symbol.toStringTag, {value: _ => 'str'});
+assert.sameValue(Object.prototype.toString.call(custom1), '[object Object]');
+assert.sameValue(Object.prototype.toString.call(custom2), '[object Object]');
diff --git a/test/built-ins/Object/prototype/toString/symbol-tag-override-bigint.js b/test/built-ins/Object/prototype/toString/symbol-tag-override-bigint.js
new file mode 100644
index 0000000000..54027d4873
--- /dev/null
+++ b/test/built-ins/Object/prototype/toString/symbol-tag-override-bigint.js
@@ -0,0 +1,19 @@
+// Copyright (C) 2018 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-object.prototype.tostring
+description: String values of `@@toStringTag` property override built-in tags
+info: |
+    15. Let tag be ? Get(O, @@toStringTag).
+    16. If Type(tag) is not String, let tag be builtinTag.
+    17. Return the string-concatenation of "[object ", tag, and "]".
+features: [BigInt, Symbol.toStringTag]
+---*/
+
+let custom1 = BigInt(0);
+let custom2 = Object(BigInt(0));
+
+Object.defineProperty(BigInt.prototype, Symbol.toStringTag, {value: 'test262'});
+assert.sameValue(Object.prototype.toString.call(custom1), '[object test262]');
+assert.sameValue(Object.prototype.toString.call(custom2), '[object test262]');
-- 
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