Tests for the new API

-casper.test.comment('Casper.getCurrentHeader()');
+casper.test.comment('Casper.headers.get()');
 
 var server = require('webserver').create();
 var service = server.listen(8090, function (request, response) {
@@ -15,21 +15,21 @@ var service = server.listen(8090, function (request, response) {
 function dumpHeaders () {
     casper.test.comment('Dumping current response headers');
 
-    casper.getCurrentHeaders().forEach(function (header) {
+    casper.currentResponse.headers.forEach(function (header) {
         casper.test.comment('- ' + header.name + ': ' + header.value);
     });
 }
 
 casper.start('tests/site/index.html', function thenLocalPage () {
-    this.test.assertEquals(casper.getCurrentHeader('Status'), null, 'No Status header on local page');
-    this.test.assertEquals(casper.getCurrentHeader('Content-Language'), null, 'No Content-Language on local page');
-    this.test.assert(casper.getCurrentHeaders().length === 0, 'No headers sent back');
+    this.test.assertEquals(casper.currentResponse, undefined, 'No response available on local page');
 });
 
 casper.thenOpen('http://localhost:8090/', function thenLocalhost () {
-    this.test.assertEquals(casper.getCurrentHeader('Content-Language'), 'en', 'Checking existing header');
-    this.test.assertEquals(casper.getCurrentHeader('content-language'), null, 'Checking header typecase');
-    this.test.assertEquals(casper.getCurrentHeader('X-Is-Troll'), null, 'Checking unexisting header');
+    var headers = casper.currentResponse.headers;
+
+    this.test.assertEquals(headers.get('Content-Language'), 'en', 'Checking existing header');
+    this.test.assertEquals(headers.get('content-language'), null, 'Checking header typecase');
+    this.test.assertEquals(headers.get('X-Is-Troll'), null, 'Checking unexisting header');
 });
 
 casper.run(function () {