Update go.mod and run go fmt

go.mod

@@ -2,6 +2,7 @@ module github.com/xanzy/go-gitlab
 
 require (
 	github.com/google/go-querystring v1.0.0
+	github.com/stretchr/testify v1.3.0
 	golang.org/x/net v0.0.0-20181108082009-03003ca0c849 // indirect
 	golang.org/x/oauth2 v0.0.0-20181106182150-f42d05182288
 	golang.org/x/sync v0.0.0-20181108010431-42b317875d0f // indirect

go.sum

+github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/golang/protobuf v1.2.0 h1:P3YflyNX/ehuJFLhxviNdFxQPkGK5cDcApsge1SqnvM=
 github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/google/go-querystring v1.0.0 h1:Xkwi/a1rcvNg1PPYe5vI8GbeBY/jrVuDX5ASuANWTrk=
 github.com/google/go-querystring v1.0.0/go.mod h1:odCYkC5MyYFN7vkCjXpyrEuKhc/BUO6wN/zVPAxq5ck=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.3.0 h1:TivCn/peBQ7UY8ooIcPgZFpTNSz0Q2U6UrFlUfqbe0Q=
+github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
 golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20181108082009-03003ca0c849 h1:FSqE2GGG7wzsYUsWiQ8MZrvEd1EOyU3NCF0AW3Wtltg=
 golang.org/x/net v0.0.0-20181108082009-03003ca0c849/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=

groups_badges_test.go

@@ -59,7 +59,7 @@ func TestAddGroupBadge(t *testing.T) {
 			fmt.Fprint(w, `{"id":3, "link_url":"LINK", "image_url":"IMAGE", "kind":"group"}`)
 		})
 
-	opt := &AddGroupBadgeOptions{ImageURL: String("IMAGE"), LinkURL: String("LINK"),}
+	opt := &AddGroupBadgeOptions{ImageURL: String("IMAGE"), LinkURL: String("LINK")}
 	badge, _, err := client.GroupBadges.AddGroupBadge(1, opt)
 	if err != nil {
 		t.Errorf("GroupBadges.AddGroupBadge returned error: %v", err)
@@ -81,7 +81,7 @@ func TestEditGroupBadge(t *testing.T) {
 			fmt.Fprint(w, `{"id":2, "link_url":"NEW_LINK", "image_url":"NEW_IMAGE", "kind":"group"}`)
 		})
 
-	opt := &EditGroupBadgeOptions{ImageURL: String("NEW_IMAGE"), LinkURL: String("NEW_LINK"),}
+	opt := &EditGroupBadgeOptions{ImageURL: String("NEW_IMAGE"), LinkURL: String("NEW_LINK")}
 	badge, _, err := client.GroupBadges.EditGroupBadge(1, 2, opt)
 	if err != nil {
 		t.Errorf("GroupBadges.EditGroupBadge returned error: %v", err)