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<?php
 /* SOME TESTS ARE MEANT TO FAIL!
 If the entire script runs, it works. */
 
 require_once('../../../Data/Types/UnorderedNode.php');
 require_once('../../../Data/Types/Edge.php');
 
 use Falcraft\Data\Types;
 
 echo "Falcraft\\Data\\Types\\Edge.php Test\n";
 echo "---------------------------------\n\n";
 
 echo "Instantiate Nodes -> ";
 
 $success = true;
 
 $testUnorderedNode1 = $testUnorderedNode2 - $testUnorderedNode3 = null;
 
 try {
 $testUnorderedNode1 = new Types\UnorderedNode();
 echo "    testUnorderedNode1 identifier: " . $testUnorderedNode1->getIdentifier() . "\n";
 
 $testUnorderedNode2 = new Types\UnorderedNode();
 echo "    testUnorderedNode2 identifier: " . $testUnorderedNode2->getIdentifier() . "\n";
 
 $testUnorderedNode3 = new Types\UnorderedNode();
 echo "    testUnorderedNode3 identifier: " . $testUnorderedNode3->getIdentifier() . "\n";
 } catch (\Exception $e) {
 $success = false;
 }
 
 if ($success) {
 echo "Success!\n";
 } else {
 echo "Failure...\n";
 }
 
 echo "Instantiate Edge (testUnorderedNode1, testUnorderedNode2) -> ";
 
 $success = true;
 
 $testEdge = null;
 
 try {
 $testEdge = new Types\Edge($testUnorderedNode1, $testUnorderedNode2);
 } catch (\Exception $e) {
 $success = false;
 }
 
 if ($success) {
 echo "Success!\n";
 } else {
 echo "Failure...\n";
 }
 
 echo "Get Next -> ";
 
 try {
 echo $testEdge->getNext()->getIdentifier() . "\n";
 } catch (\Exception $e) {
 echo "EXCEPTION CAUGHT\n";
 }
 
 echo "Get Previous -> ";
 
 try {
 echo $testEdge->getPrevious()->getIdentifier() . "\n";
 } catch (\Exception $e) {
 echo "EXCEPTION CAUGHT\n";
 }
 
 echo "Setting Next (testUnorderedNode3) -> ";
 
 $success = true;
 
 try {
 $testEdge->setNext($testUnorderedNode3);
 if (!($testEdge->getNext()->getIdentifier() == $testUnorderedNode3->getIdentifier())) {
 $success = false;
 }
 } catch (\Exception $e) {
 $success = false;
 }
 
 if ($success) {
 echo "Success!\n";
 } else {
 echo "Failure...\n";
 }
 
 echo "Setting Previous (testUnorderedNode2) -> ";
 
 $success = true;
 
 try {
 $testEdge->setPrevious($testUnorderedNode2);
 if (!($testEdge->getPrevious()->getIdentifier() == $testUnorderedNode2->getIdentifier())) {
 $success = false;
 }
 } catch (\Exception $e) {
 $success = false;
 }
 
 if ($success) {
 echo "Success!\n";
 } else {
 echo "Failure...\n";
 }
 
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