[1.6.1] Fix broken configuration directive %Core.RemoveInvalidImg, also make basic demo operational out-of-the-box

git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/trunk@999 48356398-32a2-884e-a903-53898d9a118a

tests/HTMLPurifier/Strategy/RemoveForeignElementsTest.php

@@ -51,6 +51,15 @@ class HTMLPurifier_Strategy_RemoveForeignElementsTest
         // test preservation of valid img tag
         $this->assertResult('<img src="foobar.gif" />');
         
+        // test preservation of invalid img tag when removal is disabled
+        $this->assertResult(
+            '<img />',
+            true,
+            array(
+                'Core.RemoveInvalidImg' => false
+            )
+        );
+        
     }
     
 }