1 files changed, 43 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/RegExp/lookBehind/start-of-line.js b/js/src/tests/test262/built-ins/RegExp/lookBehind/start-of-line.js
new file mode 100644
index 0000000000..de7c2bc762
--- /dev/null
+++ b/js/src/tests/test262/built-ins/RegExp/lookBehind/start-of-line.js
@@ -0,0 +1,43 @@
+// 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: Start of line matches
+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.sameValue("abcdef".match(/(?<=^[^a-c]{3})def/), null, "#1");
+assert.sameValue("foooo".match(/"^foooo(?<=^o+)$/), null, "#2");
+assert.sameValue("foooo".match(/"^foooo(?<=^o*)$/), null, "#3");
+
+assert.compareArray("abcdef".match(/(?<=^abc)def/), ["def"], "#4");
+assert.compareArray("abcdef".match(/(?<=^[a-c]{3})def/), ["def"], "#5");
+assert.compareArray("xyz\nabcdef".match(/(?<=^[a-c]{3})def/m), ["def"], "#6");
+assert.compareArray("ab\ncd\nefg".match(/(?<=^)\w+/gm), ["ab", "cd", "efg"], "#7");
+assert.compareArray("ab\ncd\nefg".match(/\w+(?<=$)/gm), ["ab", "cd", "efg"], "#8");
+assert.compareArray("ab\ncd\nefg".match(/(?<=^)\w+(?<=$)/gm), ["ab", "cd", "efg"], "#9");
+
+assert.compareArray("foo".match(/^foo(?<=^fo+)$/), ["foo"], "#10");
+assert.compareArray("foooo".match(/^foooo(?<=^fo*)/), ["foooo"], "#11");
+assert.compareArray("foo".match(/^(f)oo(?<=^\1o+)$/), ["foo", "f"], "#12");
+assert.compareArray("foo".match(/^(f)oo(?<=^\1o+)$/i), ["foo", "f"], "#13");
+assert.compareArray("foo\u1234".match(/^(f)oo(?<=^\1o+).$/i), ["foo\u1234", "f"], "#14");
+assert.compareArray("abcdefdef".match(/(?<=^\w+)def/), ["def"], "#15");
+assert.compareArray("abcdefdef".match(/(?<=^\w+)def/g), ["def", "def"], "#16");
+
+reportCompare(0, 0);