Added parseFloat for quantity and opacity on read, as suggested in bartvde's review. With additional tests to show that everything works as suggested now. See #2642.

git-svn-id: http://svn.openlayers.org/trunk/openlayers@10349 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

tests/Format/SLD/v1_0_0.html

@@ -410,7 +410,7 @@
     }
     
     function test_RasterSymbolizer(t) {
-        t.plan(1);
+        t.plan(4);
         
         var format = new OpenLayers.Format.SLD.v1_0_0();
 
@@ -431,6 +431,10 @@
         var symbolizer = {};
         format.readNode(expected, {symbolizer: symbolizer});
         
+        t.eq(symbolizer.Raster.colorMap[0].quantity, 0, "quantity set correctly");
+        t.eq(symbolizer.Raster.colorMap[0].opacity, 0.5, "opacity set correctly");
+        t.eq(symbolizer.Raster.colorMap[1].opacity, undefined, "non-existent opacity results in undefined");
+        
         var got = format.writeNode("sld:RasterSymbolizer", symbolizer["Raster"]);
         
         t.xml_eq(got, expected, "Successfully round tripped RasterSymbolizer");