? sites/default/modules
? sites/default/settings.php
Index: modules/simpletest/tests/database_test.test
===================================================================
RCS file: /cvs/drupal/drupal/modules/simpletest/tests/database_test.test,v
retrieving revision 1.9
diff -u -p -r1.9 database_test.test
--- modules/simpletest/tests/database_test.test	28 Sep 2008 21:52:08 -0000	1.9
+++ modules/simpletest/tests/database_test.test	2 Oct 2008 05:56:19 -0000
@@ -486,6 +486,18 @@ class DatabaseInsertLOBTestCase extends 
   }
 
   /**
+   * Test that we can insert an empty blob field successfully.
+   */
+  function testInsertEmptyBlob() {
+    $data = '';
+    $this->assertTrue($data === '', t('Test data is an empty string.'));    
+    $id = db_insert('test_one_blob')->fields(array('blob1' => $data))->execute();
+    $res = db_query('SELECT * FROM {test_one_blob} WHERE id = :id', array(':id' => $id));
+    $r = db_fetch_array($res);
+    $this->assertTrue($r['blob1'] === $data, t('Can insert an empty blob: id @id, type @type, @data.', array('@id' => $id, '@type' => gettype($r['blob1']), '@data' => serialize($r))));
+  }
+
+  /**
    * Test that we can insert multiple blob fields in the same query.
    */
   function testInsertMultipleBlob() {
@@ -766,6 +778,23 @@ class DatabaseUpdateLOBTestCase extends 
   }
 
   /**
+   * Confirm that we can update an empty blob column.
+   */
+  function testUpdateEmptyBlob() {
+    $data = "This is\000a test.";
+    $this->assertTrue(strlen($data) === 15, t('Test data contains a NULL.'));
+    $id = db_insert('test_one_blob')->fields(array('blob1' => $data))->execute();
+
+    $data = '';
+    $this->assertTrue($data === '', t('Test data is an empty string.'));    
+    db_update('test_one_blob')->condition('id', $id)->fields(array('blob1' => $data))->execute();
+
+    $res = db_query('SELECT * FROM {test_one_blob} WHERE id = %d', $id);
+    $r = db_fetch_array($res);
+    $this->assertTrue($r['blob1'] === $data, t('Can update an empty blob: id @id, type @type, @data.', array('@id' => $id, '@type' => gettype($r['blob1']), '@data' => serialize($r))));
+  }
+
+  /**
    * Confirm that we can update two blob columns in the same table.
    */
   function testUpdateMultipleBlob() {