From 38d0db9f31692a19257f78930bcfb240f12aa27c Mon Sep 17 00:00:00 2001
From: stronk7 <stronk7>
Date: Sun, 30 Aug 2009 20:53:12 +0000
Subject: [PATCH] Concatenating NULLs with anything returns NULL

---
 lib/dml/simpletest/testdml.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/dml/simpletest/testdml.php b/lib/dml/simpletest/testdml.php
index 056f77f466..50d108f4c7 100755
--- a/lib/dml/simpletest/testdml.php
+++ b/lib/dml/simpletest/testdml.php
@@ -1704,7 +1704,7 @@ class dml_test extends UnitTestCase {
         $this->assertEqual('123.45test', $DB->get_field_sql($sql, $params));
         // float, null and strings
         $params = array(123.45, null, 'test');
-        $this->assertEqual('123.45test', $DB->get_field_sql($sql, $params));
+        $this->assertNull($DB->get_field_sql($sql, $params)); // Concatenate NULL with anything result = NULL
 
         /// Testing fieldnames + values
         $table = $this->get_test_table();
-- 
2.39.5