Add logical NOT operator test

test/annexB/language/expressions/logical-not/emulates-undefined.js

@@ -0,0 +1,25 @@
+// Copyright (C) 2020 Alexey Shvayka. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-binary-logical-operators-runtime-semantics-evaluation
+description: >
+  ToBoolean returns `false` for [[IsHTMLDDA]] object.
+info: |
+  UnaryExpression : ! UnaryExpression
+
+  1. Let expr be the result of evaluating UnaryExpression.
+  2. Let oldValue be ! ToBoolean(? GetValue(expr)).
+  3. If oldValue is true, return false.
+  4. Return true.
+
+  The [[IsHTMLDDA]] Internal Slot / Changes to ToBoolean
+
+  1. If argument has an [[IsHTMLDDA]] internal slot, return false.
+  2. Return true.
+features: [IsHTMLDDA]
+---*/
+
+var IsHTMLDDA = $262.IsHTMLDDA;
+
+assert(!IsHTMLDDA);
+assert.sameValue(!!IsHTMLDDA, false);