test refactiored to extract login tests

frontend-js/src/test/js/ServerConnector-test.js

@@ -180,19 +180,21 @@ describe('ServerConnector', function() {
     });
   });
 
-  it('login with invalid credentials', function() {
-    var method = ServerConnector.sendPostRequest;
-    ServerConnector.sendPostRequest = function() {
-      return Promise.reject(new NetworkError("xxx", {
-        statusCode : HttpStatus.FORBIDDEN
-      }));
-    };
-    return ServerConnector.login("blabla", "blablabla").then(function() {
-      ServerConnector.sendPostRequest = method;
-      assert.ok(false);
-    }, function(error) {
-      ServerConnector.sendPostRequest = method;
-      assert.ok(error.message.indexOf("credentials") >= 0);
+  describe('login', function() {
+    it('try invalid credentials', function() {
+      var method = ServerConnector.sendPostRequest;
+      ServerConnector.sendPostRequest = function() {
+        return Promise.reject(new NetworkError("xxx", {
+          statusCode : HttpStatus.FORBIDDEN
+        }));
+      };
+      return ServerConnector.login("blabla", "blablabla").then(function() {
+        ServerConnector.sendPostRequest = method;
+        assert.ok(false);
+      }, function(error) {
+        ServerConnector.sendPostRequest = method;
+        assert.ok(error.message.indexOf("credentials") >= 0);
+      });
     });
   });