Port over test case for multiple Query elements

src/ol/format/wfsformat.js

@@ -442,7 +442,9 @@ ol.format.WFS.writeQuery_ = function(node, featureType, objectStack) {
   var srsName = goog.object.get(context, 'srsName');
   var prefix = goog.isDef(featurePrefix) ? featurePrefix + ':' : '';
   node.setAttribute('typeName', prefix + featureType);
-  node.setAttribute('srsName', srsName);
+  if (goog.isDef(srsName)) {
+    node.setAttribute('srsName', srsName);
+  }
   if (goog.isDef(featureNS)) {
     node.setAttribute('xmlns:' + featurePrefix, featureNS);
   }

test/spec/ol/format/wfs/GetFeatureMultiple.xml

@@ -1,4 +1,4 @@
-<wfs:GetFeature xmlns:wfs="http://www.opengis.net/wfs" service="WFS" version="1.0.0" xsi:schemaLocation="http://www.opengis.net/wfs http://schemas.opengis.net/wfs/1.0.0/WFS-transaction.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
+<wfs:GetFeature xmlns:wfs="http://www.opengis.net/wfs" service="WFS" version="1.1.0" xsi:schemaLocation="http://www.opengis.net/wfs http://schemas.opengis.net/wfs/1.1.0/wfs.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
     <wfs:Query typeName="topp:states" xmlns:topp="http://www.openplans.org/topp"/>
     <wfs:Query typeName="topp:cities" xmlns:topp="http://www.openplans.org/topp"/>
 </wfs:GetFeature>

test/spec/ol/format/wfsformat.test.js

@@ -259,6 +259,27 @@ describe('ol.format.WFS', function() {
       expect(serialized).to.xmleql(ol.xml.load(text));
     });
   });
+
+  describe('when writing out a GetFeature request', function() {
+    var text;
+    before(function(done) {
+      afterLoadText('spec/ol/format/wfs/GetFeatureMultiple.xml', function(xml) {
+        text = xml;
+        done();
+      });
+    });
+
+    it('handles writing multiple Query elements', function() {
+      var format = new ol.format.WFS();
+      var serialized = format.writeGetFeature({
+        featureNS: 'http://www.openplans.org/topp',
+        featureTypes: ['states', 'cities'],
+        featurePrefix: 'topp'
+      });
+      expect(serialized).to.xmleql(ol.xml.load(text));
+    });
+  });
+
 });