Tests: test_node_application_write_before_writeHead reworked.

Added res.end() call in application and response status check.
Also, renamed to test_node_application_write_before_write_head.

test/node/write_before_write_head/app.js

@@ -3,4 +3,5 @@
 require('unit-http').createServer(function (req, res) {
     res.write('blah');
     res.writeHead(200, {'Content-Type': 'text/plain'});
+    res.end();
 }).listen(7080);

test/test_node_application.py

@@ -120,10 +120,10 @@ class TestUnitNodeApplication(unit.TestUnitApplicationNode):
         self.assertTrue(self.waitforfiles(self.testdir + '/node/callback'),
             'write callback')
 
-    def test_node_application_write_before_writeHead(self):
+    def test_node_application_write_before_write_head(self):
         self.load('write_before_write_head')
 
-        self.get()
+        self.assertEqual(self.get()['status'], 200, 'write before writeHead')
 
     def test_node_application_double_end(self):
         self.load('double_end')