1 files changed, 49 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/RegExp/named-groups/unicode-references.js b/js/src/tests/test262/built-ins/RegExp/named-groups/unicode-references.js
new file mode 100644
index 0000000000..30d70ad112
--- /dev/null
+++ b/js/src/tests/test262/built-ins/RegExp/named-groups/unicode-references.js
@@ -0,0 +1,49 @@
+// Copyright 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+description: Named backreferences in Unicode RegExps
+esid: sec-atomescape
+info: |
+  The production AtomEscape :: [+N] k GroupName evaluates as follows:
+
+    1. Search the enclosing RegExp for an instance of a GroupSpecifier for an
+       RegExpIdentifierName which has a StringValue equal to the StringValue
+       of the RegExpIdentifierName contained in GroupName.
+    2. Assert: A unique such GroupSpecifier is found.
+    3. Let parenIndex be the number of left capturing parentheses in the entire
+       regular expression that occur to the left of the located GroupSpecifier.
+       This is the total number of times the Atom::(GroupSpecifierDisjunction)
+       production is expanded prior to that production's Term plus the total
+       number of Atom :: (GroupSpecifierDisjunction) productions enclosing this Term.
+    4. Call BackreferenceMatcher(parenIndex) and return its Matcher result.
+features: [regexp-named-groups]
+includes: [compareArray.js]
+---*/
+
+// Named references.
+assert.compareArray(["bab", "b"], "bab".match(/(?<b>.).\k<b>/u));
+assert.sameValue(null, "baa".match(/(?<b>.).\k<b>/u));
+
+// Reference inside group.
+assert.compareArray(["bab", "b"], "bab".match(/(?<a>\k<a>\w)../u));
+assert.sameValue("b", "bab".match(/(?<a>\k<a>\w)../u).groups.a);
+
+// Reference before group.
+assert.compareArray(["bab", "b"], "bab".match(/\k<a>(?<a>b)\w\k<a>/u));
+assert.sameValue("b", "bab".match(/\k<a>(?<a>b)\w\k<a>/u).groups.a);
+assert.compareArray(["bab", "b", "a"], "bab".match(/(?<b>b)\k<a>(?<a>a)\k<b>/u));
+let {a, b} = "bab".match(/(?<b>b)\k<a>(?<a>a)\k<b>/u).groups;
+assert.sameValue(a, "a");
+assert.sameValue(b, "b");
+
+assert.compareArray(["bab", "b"], "bab".match(/\k<a>(?<a>b)\w\k<a>/));
+assert.compareArray(["bab", "b", "a"], "bab".match(/(?<b>b)\k<a>(?<a>a)\k<b>/));
+
+// Reference properties.
+assert.sameValue("a", /(?<a>a)(?<b>b)\k<a>/u.exec("aba").groups.a);
+assert.sameValue("b", /(?<a>a)(?<b>b)\k<a>/u.exec("aba").groups.b);
+assert.sameValue(undefined, /(?<a>a)(?<b>b)\k<a>/u.exec("aba").groups.c);
+assert.sameValue(undefined, /(?<a>a)(?<b>b)\k<a>|(?<c>c)/u.exec("aba").groups.c);
+
+reportCompare(0, 0);