add more assertions for partial index test case

tests/Doctrine/Tests/DBAL/Functional/Schema/PostgreSqlSchemaManagerTest.php

@@ -363,6 +363,15 @@ class PostgreSqlSchemaManagerTest extends SchemaManagerFunctionalTestCase
         $comparator = new Schema\Comparator();
 
         $this->assertFalse($comparator->diffTable($offlineTable, $onlineTable));
+        $this->assertTrue($onlineTable->hasIndex('simple_partial_index'));
+        $this->assertTrue($onlineTable->hasIndex('complex_partial_index'));
+        $this->assertTrue($onlineTable->getIndex('simple_partial_index')->hasOption('where'));
+        $this->assertTrue($onlineTable->getIndex('complex_partial_index')->hasOption('where'));
+        $this->assertSame('(id IS NULL)', $onlineTable->getIndex('simple_partial_index')->getOption('where'));
+        $this->assertSame(
+            '(((id IS NOT NULL) AND (name IS NULL)) AND (email IS NULL))',
+            $onlineTable->getIndex('complex_partial_index')->getOption('where')
+        );
     }
 
 }