1 files changed, 42 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/RegExp/lookBehind/simple-fixed-length.js b/js/src/tests/test262/built-ins/RegExp/lookBehind/simple-fixed-length.js
new file mode 100644
index 0000000000..6e9a3cd14a
--- /dev/null
+++ b/js/src/tests/test262/built-ins/RegExp/lookBehind/simple-fixed-length.js
@@ -0,0 +1,42 @@
+// 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: Simple fixed-length 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("b".match(/^.(?<=a)/), null, "#1");
+assert.sameValue("boo".match(/^f\w\w(?<=\woo)/), null, "#2");
+assert.sameValue("fao".match(/^f\w\w(?<=\woo)/), null, "#3");
+assert.sameValue("foa".match(/^f\w\w(?<=\woo)/), null, "#4");
+
+assert.compareArray("a".match(/^.(?<=a)/), ["a"], "#5");
+assert.compareArray("foo1".match(/^f..(?<=.oo)/), ["foo"], "#6");
+assert.compareArray("foo2".match(/^f\w\w(?<=\woo)/), ["foo"], "#7");
+assert.compareArray("abcdef".match(/(?<=abc)\w\w\w/), ["def"], "#8");
+assert.compareArray("abcdef".match(/(?<=a.c)\w\w\w/), ["def"], "#9");
+assert.compareArray("abcdef".match(/(?<=a\wc)\w\w\w/), ["def"], "#10");
+assert.compareArray("abcdef".match(/(?<=a[a-z])\w\w\w/), ["cde"], "#11");
+assert.compareArray("abcdef".match(/(?<=a[a-z][a-z])\w\w\w/), ["def"], "#12");
+assert.compareArray("abcdef".match(/(?<=a[a-z]{2})\w\w\w/), ["def"], "#13");
+assert.compareArray("abcdef".match(/(?<=a{1})\w\w\w/), ["bcd"], "#14");
+assert.compareArray("abcdef".match(/(?<=a{1}b{1})\w\w\w/), ["cde"], "#15");
+assert.compareArray("abcdef".match(/(?<=a{1}[a-z]{2})\w\w\w/), ["def"], "#16");
+
+reportCompare(0, 0);