Compare two timestamps to ensure only one query is run when iterating.

tests/Doctrine/Tests/DBAL/Functional/DataAccessTest.php

@@ -3,7 +3,6 @@
 namespace Doctrine\Tests\DBAL\Functional;
 
 use Doctrine\DBAL\Connection;
-use Doctrine\DBAL\Logging\DebugStack;
 use Doctrine\DBAL\Platforms\AbstractPlatform;
 use Doctrine\DBAL\Types\Type;
 use PDO;
@@ -870,31 +869,27 @@ class DataAccessTest extends \Doctrine\Tests\DbalFunctionalTestCase
 
     public function testIteratorCanBeIteratedMultipleTimes()
     {
-        $preTestLogger = $this->_conn->getConfiguration()->getSQLLogger();
-        $stack = new DebugStack();
-        $this->_conn->getConfiguration()->setSQLLogger($stack);
-
-        $sql = 'SELECT test_int, test_string FROM fetch_table';
+        $sql = 'SELECT CURTIME(6) AS time_started, test_int, test_string FROM fetch_table';
         $stmt = $this->_conn->query($sql);
         $stmt->setFetchMode(\PDO::FETCH_ASSOC);
 
+        $timeStartedMsFirstLoop = null;
+        $timeStartedMsSecondLoop = null;
+
         $i = 0;
         foreach ($stmt as $row) {
+            $timeStartedMsFirstLoop = $row['time_started'];
             $i++;
         }
 
         $j = 0;
         foreach ($stmt as $row2) {
+            $timeStartedMsSecondLoop = $row2['time_started'];
             $j++;
         }
 
         $this->assertEquals($i, $j);
-
-        // Check only 1 query is run.
-        $this->assertCount(1, $stack->queries);
-
-        // Reset the SQL logger
-        $this->_conn->getConfiguration()->setSQLLogger($preTestLogger);
+        $this->assertEquals($timeStartedMsFirstLoop, $timeStartedMsSecondLoop);
     }
 }