1 files changed, 51 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/literals/regexp/u-case-mapping.js b/js/src/tests/test262/language/literals/regexp/u-case-mapping.js
new file mode 100644
index 0000000000..2ac4e2d64f
--- /dev/null
+++ b/js/src/tests/test262/language/literals/regexp/u-case-mapping.js
@@ -0,0 +1,51 @@
+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+description: Case mapping of astral symbols
+es6id: 21.2.2.8.2
+info: |
+    21.2.2.8.2 Runtime Semantics: Canonicalize ( ch )
+
+    The abstract operation Canonicalize takes a character parameter ch and
+    performs the following steps:
+
+        1. If IgnoreCase is false, return ch.
+        2. If Unicode is true,
+           a. If the file CaseFolding.txt of the Unicode Character Database
+              provides a simple or common case folding mapping for ch, return
+              the result of applying that mapping to ch.
+           b. Else, return ch.
+---*/
+
+assert.sameValue(
+  /\u212a/i.test('k'),
+  false,
+  'Case mapping is not applied in the absence of the `u` flag'
+);
+assert.sameValue(
+  /\u212a/i.test('K'),
+  false,
+  'Case mapping is not applied in the absence of the `u` flag'
+);
+assert.sameValue(
+  /\u212a/u.test('k'),
+  false,
+  'Case mapping is not applied in the absence of the `i` flag'
+);
+assert.sameValue(
+  /\u212a/u.test('K'),
+  false,
+  'Case mapping is not applied in the absence of the `i` flag'
+);
+
+assert(
+  /\u212a/iu.test('k'),
+  'Case mapping is applied in the presence of the `i` and `u` flags'
+);
+assert(
+  /\u212a/iu.test('K'),
+  'Case mapping is applied in the presence of the `i` and `u` flags'
+);
+
+reportCompare(0, 0);