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--TEST--
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SPL: SplHeap top of empty heap
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--CREDITS--
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Mark Schaschke (mark@fractalturtle.com)
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TestFest London May 2009
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--FILE--
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<?php
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$h = new SplMinHeap();
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try {
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$h->top();
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} catch (Exception $e) {
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echo $e->getMessage();
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}
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?>
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--EXPECT--
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Can't peek at an empty heap
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