From 2377131fd71398e4b1779cfa50c4741973d93713 Mon Sep 17 00:00:00 2001
From: Alexey Shvayka <shvaikalesh@gmail.com>
Date: Tue, 11 Feb 2020 23:54:08 +0200
Subject: [PATCH] Test \b escape inside CharacterClass in Unicode RegExp

---
 ...nicode_character_class_backspace_escape.js | 20 +++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 test/built-ins/RegExp/unicode_character_class_backspace_escape.js

diff --git a/test/built-ins/RegExp/unicode_character_class_backspace_escape.js b/test/built-ins/RegExp/unicode_character_class_backspace_escape.js
new file mode 100644
index 0000000000..c8da79340c
--- /dev/null
+++ b/test/built-ins/RegExp/unicode_character_class_backspace_escape.js
@@ -0,0 +1,20 @@
+// Copyright (C) 2020 Alexey Shvayka. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: prod-ClassEscapes
+description: >
+  \b escape inside CharacterClass is valid in Unicode patterns (unlike \B).
+info: |
+  ClassEscape[U] ::
+    b
+
+  Static Semantics: CharacterValue
+
+  ClassEscape :: b
+
+  1. Return the code point value of U+0008 (BACKSPACE).
+---*/
+
+assert(/[\b]/u.test('\b'));
+assert(/[\b-A]/u.test('A'));