1 files changed, 68 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/JSON/stringify/value-string-escape-ascii.js b/js/src/tests/test262/built-ins/JSON/stringify/value-string-escape-ascii.js
new file mode 100644
index 0000000000..3ec26e928d
--- /dev/null
+++ b/js/src/tests/test262/built-ins/JSON/stringify/value-string-escape-ascii.js
@@ -0,0 +1,68 @@
+// Copyright (c) 2018 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-quotejsonstring
+description: >
+    JSON.stringify property names and values containing ASCII
+    characters that require escaping
+---*/
+
+var char_to_json = {
+  '"': '\\"',
+  "\\": "\\\\",
+  "\x00": "\\u0000",
+  "\x01": "\\u0001",
+  "\x02": "\\u0002",
+  "\x03": "\\u0003",
+  "\x04": "\\u0004",
+  "\x05": "\\u0005",
+  "\x06": "\\u0006",
+  "\x07": "\\u0007",
+  "\x08": "\\b",
+  "\x09": "\\t",
+  "\x0A": "\\n",
+  "\x0B": "\\u000b",
+  "\x0C": "\\f",
+  "\x0D": "\\r",
+  "\x0E": "\\u000e",
+  "\x0F": "\\u000f",
+  "\x10": "\\u0010",
+  "\x11": "\\u0011",
+  "\x12": "\\u0012",
+  "\x13": "\\u0013",
+  "\x14": "\\u0014",
+  "\x15": "\\u0015",
+  "\x16": "\\u0016",
+  "\x17": "\\u0017",
+  "\x18": "\\u0018",
+  "\x19": "\\u0019",
+  "\x1A": "\\u001a",
+  "\x1B": "\\u001b",
+  "\x1C": "\\u001c",
+  "\x1D": "\\u001d",
+  "\x1E": "\\u001e",
+  "\x1F": "\\u001f"
+}
+
+var chars = Object.keys(char_to_json).join("");
+var chars_reversed = Object.keys(char_to_json).reverse().join("");
+var jsonChars = Object.values(char_to_json).join("");
+var jsonChars_reversed = Object.values(char_to_json).reverse().join("");
+var json = JSON.stringify({
+  ["name" + chars + chars_reversed]: chars_reversed + chars + "value"
+});
+
+for (var char in char_to_json) {
+  var count = json.split(char_to_json[char]).length - 1;
+  assert.sameValue(count, 4,
+    "Every ASCII 0x" + char.charCodeAt(0).toString(16) + " serializes to " + char_to_json[char]);
+}
+
+assert.sameValue(
+  json,
+  `{"${"name" + jsonChars + jsonChars_reversed}":"${jsonChars_reversed + jsonChars + "value"}"}`,
+  "JSON.stringify(objectUsingControlCharacters)"
+);
+
+reportCompare(0, 0);