1 files changed, 34 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/RegExp/named-groups/string-replace-nocaptures.js b/js/src/tests/test262/built-ins/RegExp/named-groups/string-replace-nocaptures.js
new file mode 100644
index 0000000000..bfd98fa38d
--- /dev/null
+++ b/js/src/tests/test262/built-ins/RegExp/named-groups/string-replace-nocaptures.js
@@ -0,0 +1,34 @@
+// Copyright 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+description: If there are no named captures, don't replace $<>
+esid: sec-getsubstitution
+features: [regexp-named-groups]
+info: |
+  Runtime Semantics: GetSubstitution( matched, str, position, captures, namedCaptures, replacement )
+
+  Table: Replacement Text Symbol Substitutions
+
+  Unicode Characters: $<
+  Replacement text:
+    1. If namedCaptures is undefined, the replacement text is the literal string $<.
+---*/
+
+// @@replace with a string replacement argument (no named captures).
+
+let source = "(.)(.)|(x)";
+for (let flags of ["", "u"]) {
+  let re = new RegExp(source, flags);
+  assert.sameValue("$<snd>$<fst>cd", "abcd".replace(re, "$<snd>$<fst>"));
+  assert.sameValue("bacd", "abcd".replace(re, "$2$1"));
+  assert.sameValue("cd", "abcd".replace(re, "$3"));
+  assert.sameValue("$<sndcd", "abcd".replace(re, "$<snd"));
+  assert.sameValue("$<sndacd", "abcd".replace(re, "$<snd$1"));
+  assert.sameValue("$<42a>cd", "abcd".replace(re, "$<42$1>"));
+  assert.sameValue("$<fth>cd", "abcd".replace(re, "$<fth>"));
+  assert.sameValue("$<a>cd", "abcd".replace(re, "$<$1>"));
+}
+
+
+reportCompare(0, 0);