1 files changed, 41 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/JSON/stringify/value-tojson-result.js b/js/src/tests/test262/built-ins/JSON/stringify/value-tojson-result.js
new file mode 100644
index 0000000000..f095e25566
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+++ b/js/src/tests/test262/built-ins/JSON/stringify/value-tojson-result.js
@@ -0,0 +1,41 @@
+// Copyright (C) 2019 Aleksey Shvayka. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-serializejsonproperty
+description: >
+  Result of toJSON method is stringified.
+info: |
+  JSON.stringify ( value [ , replacer [ , space ] ] )
+
+  [...]
+  12. Return ? SerializeJSONProperty(the empty String, wrapper).
+
+  SerializeJSONProperty ( key, holder )
+
+  [...]
+  2. If Type(value) is Object, then
+    a. Let toJSON be ? Get(value, "toJSON").
+    b. If IsCallable(toJSON) is true, then
+      i. Set value to ? Call(toJSON, value, « key »).
+---*/
+
+assert.sameValue(
+  JSON.stringify({
+    toJSON: function() { return [false]; },
+  }),
+  '[false]'
+);
+
+var arr = [true];
+arr.toJSON = function() {};
+assert.sameValue(JSON.stringify(arr), undefined);
+
+var str = new String('str');
+str.toJSON = function() { return null; };
+assert.sameValue(JSON.stringify({key: str}), '{"key":null}');
+
+var num = new Number(14);
+num.toJSON = function() { return {key: 7}; };
+assert.sameValue(JSON.stringify([num]), '[{"key":7}]');
+
+reportCompare(0, 0);