#1: Fix race conditions errors and rewrite tests

Gopkg.lock

@@ -226,10 +226,23 @@
   revision = "25b30aa063fc18e48662b86996252eabdcf2f0c7"
   version = "v1.0.0"
 
+[[projects]]
+  digest = "1:711eebe744c0151a9d09af2315f0bb729b2ec7637ef4c410fa90a18ef74b65b6"
+  name = "github.com/stretchr/objx"
+  packages = ["."]
+  pruneopts = ""
+  revision = "477a77ecc69700c7cdeb1fa9e129548e1c1c393c"
+  version = "v0.1.1"
+
 [[projects]]
   digest = "1:381bcbeb112a51493d9d998bbba207a529c73dbb49b3fd789e48c63fac1f192c"
   name = "github.com/stretchr/testify"
-  packages = ["assert"]
+  packages = [
+    "assert",
+    "mock",
+    "require",
+    "suite",
+  ]
   pruneopts = ""
   revision = "ffdc059bfe9ce6a4e144ba849dbedead332c6053"
   version = "v1.3.0"
@@ -303,6 +316,8 @@
     "github.com/spf13/cobra",
     "github.com/spf13/viper",
     "github.com/stretchr/testify/assert",
+    "github.com/stretchr/testify/mock",
+    "github.com/stretchr/testify/suite",
     "github.com/thedevsaddam/govalidator",
     "gopkg.in/h2non/gock.v1",
   ]