JSTests/test262/test/built-ins/Set/prototype/has/returns-true-when-value-present-string.js

// Copyright (C) 2015 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-set.prototype.has
description: >
    Set.prototype.has ( value )

    ...
    5. Repeat for each e that is an element of entries,
      a. If e is not empty and SameValueZero(e, value) is true, return true.
    ...

---*/

var s = new Set();

s.add("")

assert.sameValue(s.has(""), true, "`s.has('')` returns `true`");