Add tests for parsing of NetworkLink tags

test/spec/ol/format/kmlformat.test.js

@@ -2489,6 +2489,45 @@ describe('ol.format.KML', function() {
 
   });
 
+  describe('#readNetworkLinks', function() {
+    it('returns empty array if no network links found', function() {
+      var text =
+          '<kml xmlns="http://www.opengis.net/kml/2.2">' +
+          '  <Document>' +
+          '  </Document>' +
+          '</kml>';
+      var nl = format.readNetworkLinks(text);
+      expect(nl).to.have.length(0);
+    });
+
+    it('returns an array of network links', function() {
+      var text =
+          '<kml xmlns="http://www.opengis.net/kml/2.2">' +
+          '  <Document>' +
+          '    <NetworkLink>' +
+          '      <name>bar</name>' +
+          '      <Link>' +
+          '        <href>bar/bar.kml</href>' +
+          '      </Link>' +
+          '    </NetworkLink>' +
+          '  </Document>' +
+          '  <Folder>' +
+          '    <NetworkLink>' +
+          '      <Link>' +
+          '        <href>http://foo.com/foo.kml</href>' +
+          '      </Link>' +
+          '    </NetworkLink>' +
+          '  </Folder>' +
+          '</kml>';
+      var nl = format.readNetworkLinks(text);
+      expect(nl).to.have.length(2);
+      expect(nl[0].name).to.be('bar');
+      expect(nl[0].href).to.be('bar/bar.kml');
+      expect(nl[1].href).to.be('http://foo.com/foo.kml');
+    });
+
+  });
+
 });