1 files changed, 39 insertions, 0 deletions
diff --git a/js/src/tests/ecma_6/RegExp/unicode-back-reference.js b/js/src/tests/ecma_6/RegExp/unicode-back-reference.js
new file mode 100644
index 000000000..2a65432a1
--- /dev/null
+++ b/js/src/tests/ecma_6/RegExp/unicode-back-reference.js
@@ -0,0 +1,39 @@
+var BUGNUMBER = 1135377;
+var summary = "Implement RegExp unicode flag -- back reference should not match lead surrogate that has corresponding trail surrogate.";
+
+print(BUGNUMBER + ": " + summary);
+
+// The last character of back reference is not a surrogate.
+assertEqArray(/foo(.+)bar\1/u.exec("fooAbarA\uDC00"),
+              ["fooAbarA", "A"]);
+assertEqArray(/foo(.+)bar\1/u.exec("fooAbarA\uD834"),
+              ["fooAbarA", "A"]);
+assertEqArray(/foo(.+)bar\1/u.exec("fooAbarAA"),
+              ["fooAbarA", "A"]);
+assertEqArray(/foo(.+)bar\1/u.exec("fooAbarA"),
+              ["fooAbarA", "A"]);
+
+// The last character of back reference is a lead surrogate.
+assertEq(/foo(.+)bar\1/u.exec("foo\uD834bar\uD834\uDC00"), null);
+assertEqArray(/foo(.+)bar\1/u.exec("foo\uD834bar\uD834\uD834"),
+              ["foo\uD834bar\uD834", "\uD834"]);
+assertEqArray(/foo(.+)bar\1/u.exec("foo\uD834bar\uD834A"),
+              ["foo\uD834bar\uD834", "\uD834"]);
+assertEqArray(/foo(.+)bar\1/u.exec("foo\uD834bar\uD834"),
+              ["foo\uD834bar\uD834", "\uD834"]);
+
+// The last character of back reference is a trail surrogate.
+assertEqArray(/foo(.+)bar\1/u.exec("foo\uDC00bar\uDC00\uDC00"),
+              ["foo\uDC00bar\uDC00", "\uDC00"]);
+assertEqArray(/foo(.+)bar\1/u.exec("foo\uDC00bar\uDC00\uD834"),
+              ["foo\uDC00bar\uDC00", "\uDC00"]);
+assertEqArray(/foo(.+)bar\1/u.exec("foo\uDC00bar\uDC00A"),
+              ["foo\uDC00bar\uDC00", "\uDC00"]);
+assertEqArray(/foo(.+)bar\1/u.exec("foo\uDC00bar\uDC00"),
+              ["foo\uDC00bar\uDC00", "\uDC00"]);
+
+// Pattern should not match to surrogate pair partially.
+assertEq(/^(.+)\1$/u.exec("\uDC00foobar\uD834\uDC00foobar\uD834"), null);
+
+if (typeof reportCompare === "function")
+    reportCompare(true, true);