1 files changed, 45 insertions, 0 deletions
diff --git a/js/src/tests/test262/annexB/built-ins/unescape/four-ignore-non-hex.js b/js/src/tests/test262/annexB/built-ins/unescape/four-ignore-non-hex.js
new file mode 100644
index 0000000000..411a62c551
--- /dev/null
+++ b/js/src/tests/test262/annexB/built-ins/unescape/four-ignore-non-hex.js
@@ -0,0 +1,45 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-unescape-string
+es6id: B.2.1.2
+description: >
+    Does not transform four-character patterns that contain non-hexadecimal
+    digits
+info: |
+    [...]
+    5. Repeat, while k ≠ length,
+       [...]
+       a. Let c be the code unit at index k within string.
+       b. If c is %, then
+          i. If k ≤ length-6 and the code unit at index k+1 within string is u
+             and the four code units at indices k+2, k+3, k+4, and k+5 within
+             string are all hexadecimal digits, then
+             1. Let c be the code unit whose value is the integer represented
+                by the four hexadecimal digits at indices k+2, k+3, k+4, and
+                k+5 within string.
+             2. Increase k by 5.
+       [...]
+---*/
+
+assert.sameValue(unescape('%u000%0'), '%u000%0');
+
+assert.sameValue(unescape('%u000g0'), '%u000g0');
+assert.sameValue(unescape('%u000G0'), '%u000G0');
+assert.sameValue(unescape('%u00g00'), '%u00g00');
+assert.sameValue(unescape('%u00G00'), '%u00G00');
+assert.sameValue(unescape('%u0g000'), '%u0g000');
+assert.sameValue(unescape('%u0G000'), '%u0G000');
+assert.sameValue(unescape('%ug0000'), '%ug0000');
+assert.sameValue(unescape('%uG0000'), '%uG0000');
+
+assert.sameValue(unescape('%u000u0'), '%u000u0');
+assert.sameValue(unescape('%u000U0'), '%u000U0');
+assert.sameValue(unescape('%u00u00'), '%u00u00');
+assert.sameValue(unescape('%u00U00'), '%u00U00');
+assert.sameValue(unescape('%u0u000'), '%u0u000');
+assert.sameValue(unescape('%u0U000'), '%u0U000');
+assert.sameValue(unescape('%uu0000'), '%uu0000');
+assert.sameValue(unescape('%uU0000'), '%uU0000');
+
+reportCompare(0, 0);