1 files changed, 45 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/RegExp/lookBehind/back-references.js b/js/src/tests/test262/built-ins/RegExp/lookBehind/back-references.js
new file mode 100644
index 0000000000..f6a3f7c842
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+++ b/js/src/tests/test262/built-ins/RegExp/lookBehind/back-references.js
@@ -0,0 +1,45 @@
+// Copyright (C) 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-assertion
+description: Back references
+info: |
+  The production Assertion :: (?<=Disjunction) evaluates as follows:
+    1. Evaluate Disjunction with -1 as its direction argument to obtain a Matcher m.
+    2. Return an internal Matcher closure that takes two arguments, a State x and a Continuation
+        c, and performs the following steps:
+      a. Let d be a Continuation that always returns its State argument as a successful MatchResult.
+      b. Call m(x, d) and let r be its result.
+      c. If r is failure, return failure.
+      d. Let y be r's State.
+      e. Let cap be y's captures List.
+      f. Let xe be x's endIndex.
+      g. Let z be the State (xe, cap).
+      h. Call c(z) and return its result.
+features: [regexp-lookbehind]
+includes: [compareArray.js]
+---*/
+
+assert.compareArray("abb".match(/(.)(?<=(\1\1))/), ["b", "b", "bb"], "#1");
+assert.compareArray("abB".match(/(.)(?<=(\1\1))/i), ["B", "B", "bB"], "#2");
+assert.compareArray("aabAaBa".match(/((\w)\w)(?<=\1\2\1)/i), ["aB", "aB", "a"], "#3");
+assert.compareArray("aabAaBa".match(/(\w(\w))(?<=\1\2\1)/i), ["Ba", "Ba", "a"], "#4");
+assert.compareArray("abaBbAa".match(/(?=(\w))(?<=(\1))./i), ["b", "b", "B"], "#5");
+assert.compareArray("  'foo'  ".match(/(?<=(.))(\w+)(?=\1)/), ["foo", "'", "foo"], "#6");
+assert.compareArray("  \"foo\"  ".match(/(?<=(.))(\w+)(?=\1)/), ["foo", "\"", "foo"], "#7");
+assert.compareArray("abbb".match(/(.)(?<=\1\1\1)/), ["b", "b"], "#8");
+assert.compareArray("fababab".match(/(..)(?<=\1\1\1)/), ["ab", "ab"], "#9");
+
+assert.sameValue("  .foo\"  ".match(/(?<=(.))(\w+)(?=\1)/), null, "#10");
+assert.sameValue("ab".match(/(.)(?<=\1\1\1)/), null, "#11");
+assert.sameValue("abb".match(/(.)(?<=\1\1\1)/), null, "#12");
+assert.sameValue("ab".match(/(..)(?<=\1\1\1)/), null, "#13");
+assert.sameValue("abb".match(/(..)(?<=\1\1\1)/), null, "#14");
+assert.sameValue("aabb".match(/(..)(?<=\1\1\1)/), null, "#15");
+assert.sameValue("abab".match(/(..)(?<=\1\1\1)/), null, "#16");
+assert.sameValue("fabxbab".match(/(..)(?<=\1\1\1)/), null, "#17");
+assert.sameValue("faxabab".match(/(..)(?<=\1\1\1)/), null, "#18");
+
+
+reportCompare(0, 0);