function test_rangeNode_disputeDate_is()
 {
     $knownId = "disputedtransaction";
     $now = new DateTime("2014-03-01");
     $past = clone $now;
     $past->modify("-1 day");
     $future = clone $now;
     $future->modify("+1 day");
     $future2 = clone $now;
     $future2->modify("+2 days");
     $collection = Braintree_Transaction::search(array(Braintree_TransactionSearch::id()->is($knownId), Braintree_TransactionSearch::disputeDate()->is($past)));
     $this->assertEquals(0, $collection->maximumCount());
     $collection = Braintree_Transaction::search(array(Braintree_TransactionSearch::id()->is($knownId), Braintree_TransactionSearch::disputeDate()->is($now)));
     $this->assertEquals(1, $collection->maximumCount());
     $this->assertEquals($knownId, $collection->firstItem()->id);
     $collection = Braintree_Transaction::search(array(Braintree_TransactionSearch::id()->is($knownId), Braintree_TransactionSearch::disputeDate()->is($future)));
     $this->assertEquals(0, $collection->maximumCount());
 }