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// modification, are permitted provided that the following conditions are
// met:
//
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//       notice, this list of conditions and the following disclaimer.
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//       with the distribution.
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//
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assertTrue(!x && typeof x == 'undefined');
assertTrue(!y && typeof y == 'undefined');
if (false) { var x = 42; }
if (true)  { var y = 87; }
assertTrue(!x && typeof x == 'undefined');
assertEquals(87, y);

assertTrue(!z && typeof z == 'undefined');
if (false) { var z; }
assertTrue(!z && typeof z == 'undefined');