Index: modules/node/node.test
===================================================================
RCS file: /cvs/drupal/drupal/modules/node/node.test,v
retrieving revision 1.72
diff -u -p -r1.72 node.test
--- modules/node/node.test	30 Jan 2010 07:59:25 -0000	1.72
+++ modules/node/node.test	1 Feb 2010 01:41:25 -0000
@@ -173,8 +173,10 @@ class NodeRevisionsTestCase extends Drup
     $log = $this->randomName(10);
     $node = $this->drupalCreateNode(array('log' => $log));
 
-    // Save over the same revision but do not provide a log message, and check
-    // that the original log message is preserved.
+    // Save over the same revision and explicitly provide an empty log message
+    // (for example, to mimic the case of a node form submitted with no text in
+    // the "log message" field), and check that the original log message is
+    // preserved.
     $new_title = $this->randomName(10) . 'testNodeRevisionWithoutLogMessage1';
     $updated_node = (object) array(
       'nid' => $node->nid,
@@ -182,6 +184,7 @@ class NodeRevisionsTestCase extends Drup
       'uid' => $node->uid,
       'type' => $node->type,
       'title' => $new_title,
+      'log' => '',
     );
     node_save($updated_node);
     $this->drupalGet('node/' . $node->nid);