Test whether section comments are moved correctly

test/php/library/Icinga/Config/PreservingIniWriterTest.php

@@ -467,7 +467,7 @@ EOD
         );
     }
 
-    public function testWhetherSectionAndPropertyOrderIsUpdated()
+    public function testWhetherSectionOrderIsUpdated()
     {
         $config = <<<'EOD'
 [one]
@@ -536,6 +536,46 @@ EOD;
         );
     }
 
+    public function testWhetherCommentOrderIsUpdated()
+    {
+        $config = <<<'EOD'
+; comment 1
+[one]
+
+
+; comment 2
+[two]
+EOD;
+
+        $reverted = <<<'EOD'
+; comment 2
+[two]
+
+
+; comment 1
+[one]
+EOD;
+        $target = $this->writeConfigToTemporaryFile($config);
+        $writer = new PreservingIniWriter(
+            array(
+                'config' => new Zend_Config(
+                    array(
+                        'two' => array(),
+                        'one' => array()
+                    )
+                ),
+                'filename'  => $target
+            )
+        );
+
+        $this->assertEquals(
+            trim($reverted),
+            trim($writer->render()),
+            'PreservingIniWriter does not preserve section and/or property order'
+        );
+    }
+
+
     public function testWhetherCommentsOnEmptyLinesArePreserved()
     {
         $config = <<<'EOD'