                 "failed parsing identifier")
         }
     }
+    
+    func testRequestGifsResponseFail()
+    {
+        guard
+            
+            let model:MHome = self.model
+            
+        else
+        {
+            return
+        }
+        
+        let items:[MGiphyItem]? = model.requestGifsResponse(
+            data:trendingMock,
+            urlResponse:urlResponseFail,
+            error:nil)
+        
+        XCTAssertNil(
+            items,
+            "should not parse items")
+    }
 }

    private let kTrendingExtension:String = "json"
    private let kStatusCodeOk:Int = 200
    private let kStatusCodeFail:Int = 0
    private let kMockedItems:Int = 4
    
    override func setUp()
    {

        
        let items:[MGiphyItem]? = model.requestGifsResponse(
            data:trendingMock,
            urlResponse:urlResponseOk,
            error:nil)
        
        XCTAssertNotNil(
