Test forward slash in RegularExpressionClassChar

test/built-ins/RegExp/regexp-class-chars.js

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+// Copyright (C) 2019 Mike Pennisi. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+description: RegularExpressionClassChars may include the forward slash character
+info: |
+  11.8.5Regular Expression Literals
+
+  RegularExpressionClass ::
+    [ RegularExpressionClassChars ]
+
+  RegularExpressionClassChars ::
+    [empty]
+    RegularExpressionClassChars RegularExpressionClassChar
+
+  RegularExpressionClassChar ::
+    RegularExpressionNonTerminator but not one of ] or \
+    RegularExpressionBackslashSequence
+
+  RegularExpressionNonTerminator ::
+    SourceCharacterbut not LineTerminator
+esid: sec-literals-regular-expression-literals
+---*/
+
+assert(/[/]/.test("/"), "Forward slash");
+assert.sameValue(/[/]/.test("x"), false, "Forward slash");
+
+assert(/[//]/.test("/"), "Forward slash - repeated");
+assert.sameValue(/[//]/.test("x"), false, "Forward slash - repeated");