Fixed lint issues and missing documentation

.golangci.json

@@ -32,6 +32,13 @@
             "errcheck",
             "cyclop"
           ]
+        },
+        {
+          "path": "_test\\.go",
+          "linters": [
+            "gosec"
+          ],
+          "text": "G104"
         }
       ]
     }