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/*
* Any copyright is dedicated to the Public Domain.
* http://creativecommons.org/licenses/publicdomain/
*/
// All NaNs must be treated as identical keys for Set.
// Avoid constant-folding that would happen were |undefined| to be used.
var key = -/a/g.missingProperty;
var s = new Set();
s.add(key, 17);
assertEq(s.has(key), true);
assertEq(s.has(-key), true);
assertEq(s.has(NaN), true);
s.delete(-key);
assertEq(s.has(key), false);
assertEq(s.has(-key), false);
assertEq(s.has(NaN), false);
s.add(-key, 17);
assertEq(s.has(key), true);
assertEq(s.has(-key), true);
assertEq(s.has(NaN), true);
s.delete(NaN);
assertEq(s.has(key), false);
assertEq(s.has(-key), false);
assertEq(s.has(NaN), false);
s.add(NaN, 17);
assertEq(s.has(key), true);
assertEq(s.has(-key), true);
assertEq(s.has(NaN), true);
s.delete(key);
assertEq(s.has(key), false);
assertEq(s.has(-key), false);
assertEq(s.has(NaN), false);
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