fix for #800 - the mergeNewParams function is now simplified. the only time it need be overridden now is in WMS, which mandates that all parameters should be uppercased. thanks for the review and the added test, tim.

git-svn-id: http://svn.openlayers.org/trunk/openlayers@3584 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

tests/Layer/test_HTTPRequest.html

@@ -65,7 +65,7 @@
     }
 
     function test_05_Layer_HTTPRequest_mergeNewParams (t) {
-        t.plan( 3 );
+        t.plan( 4 );
 
         layer = new OpenLayers.Layer.HTTPRequest(name, url, params, options);
         
@@ -80,6 +80,11 @@
         newParams.chickpeas = 151;
 
         t.eq( layer.params.chickpeas, "image/png", "mergeNewParams() makes clean copy of hash");
+        
+        layer.redraw = function() {
+            t.ok(true, "layer.mergeNewParams calls layer.redraw");
+        }
+        layer.mergeNewParams();
 
 
     }