From e73054f75e08e329e73e0f77bf92503ad5b83d0f Mon Sep 17 00:00:00 2001
From: akluball <35855437+akluball@users.noreply.github.com>
Date: Wed, 5 Aug 2020 15:27:34 -0400
Subject: [PATCH] Add tests for ZWJ and ZWNJ in identifiers (#2723)

---
 .../identifiers/part-zwj-zwnj-escaped.js         | 16 ++++++++++++++++
 test/language/identifiers/start-zwj-escaped.js   | 15 +++++++++++++++
 test/language/identifiers/start-zwnj-escaped.js  | 15 +++++++++++++++
 3 files changed, 46 insertions(+)
 create mode 100644 test/language/identifiers/part-zwj-zwnj-escaped.js
 create mode 100644 test/language/identifiers/start-zwj-escaped.js
 create mode 100644 test/language/identifiers/start-zwnj-escaped.js

diff --git a/test/language/identifiers/part-zwj-zwnj-escaped.js b/test/language/identifiers/part-zwj-zwnj-escaped.js
new file mode 100644
index 0000000000..934b311ba7
--- /dev/null
+++ b/test/language/identifiers/part-zwj-zwnj-escaped.js
@@ -0,0 +1,16 @@
+// Copyright (C) 2020 Adam Kluball. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Adam Kluball
+esid: sec-names-and-keywords
+description: zero width joiner and zero width non-joiner are valid identifier parts
+---*/
+
+var $ = 1;
+var $\u200D = 2;
+var $\u200C = 3;
+
+assert.sameValue($, 1);
+assert.sameValue($\u200D, 2);
+assert.sameValue($\u200C, 3);
diff --git a/test/language/identifiers/start-zwj-escaped.js b/test/language/identifiers/start-zwj-escaped.js
new file mode 100644
index 0000000000..a677eddcf0
--- /dev/null
+++ b/test/language/identifiers/start-zwj-escaped.js
@@ -0,0 +1,15 @@
+// Copyright (C) 2020 Adam Kluball. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Adam Kluball
+esid: sec-names-and-keywords
+description: zero width joiner is not a valid identifier start
+negative:
+  phase: parse
+  type: SyntaxError
+---*/
+
+$DONOTEVALUATE();
+
+var \u200D;
diff --git a/test/language/identifiers/start-zwnj-escaped.js b/test/language/identifiers/start-zwnj-escaped.js
new file mode 100644
index 0000000000..ae8c920899
--- /dev/null
+++ b/test/language/identifiers/start-zwnj-escaped.js
@@ -0,0 +1,15 @@
+// Copyright (C) 2020 Adam Kluball. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Adam Kluball
+esid: sec-names-and-keywords
+description: zero width non-joiner is not a valid identifier start
+negative:
+  phase: parse
+  type: SyntaxError
+---*/
+
+$DONOTEVALUATE();
+
+var \u200C;