fix result cache and PDO connection test on pdo_sqlsrv

tests/Doctrine/Tests/DBAL/Functional/Driver/PDOConnectionTest.php

@@ -64,6 +64,10 @@ class PDOConnectionTest extends DbalFunctionalTestCase
      */
     public function testThrowsWrappedExceptionOnPrepare()
     {
+        if ($this->_conn->getDriver()->getName() === 'pdo_sqlsrv') {
+            $this->markTestSkipped('pdo_sqlsrv does not allow setting PDO::ATTR_EMULATE_PREPARES at connection level.');
+        }
+
         // Emulated prepared statements have to be disabled for this test
         // so that PDO actually communicates with the database server to check the query.
         $this->driverConnection->setAttribute(\PDO::ATTR_EMULATE_PREPARES, false);

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

@@ -18,8 +18,6 @@ class ResultCacheTest extends \Doctrine\Tests\DbalFunctionalTestCase
     {
         parent::setUp();
 
-        try {
-            /* @var $sm \Doctrine\DBAL\Schema\AbstractSchemaManager */
         $table = new \Doctrine\DBAL\Schema\Table("caching");
         $table->addColumn('test_int', 'integer');
         $table->addColumn('test_string', 'string', array('notnull' => false));
@@ -27,10 +25,7 @@ class ResultCacheTest extends \Doctrine\Tests\DbalFunctionalTestCase
 
         $sm = $this->_conn->getSchemaManager();
         $sm->createTable($table);
-        } catch(\Exception $e) {
 
-        }
-        $this->_conn->executeUpdate('DELETE FROM caching');
         foreach ($this->expectedResult as $row) {
             $this->_conn->insert('caching', $row);
         }
@@ -42,6 +37,13 @@ class ResultCacheTest extends \Doctrine\Tests\DbalFunctionalTestCase
         $config->setResultCacheImpl($cache);
     }
 
+    protected function tearDown()
+    {
+        $this->_conn->getSchemaManager()->dropTable('caching');
+
+        parent::tearDown();
+    }
+
     public function testCacheFetchAssoc()
     {
         $this->assertCacheNonCacheSelectSameFetchModeAreEqual($this->expectedResult, \PDO::FETCH_ASSOC);