Move controller_test.go into controller.go

Turns out the stuff in the test file needs to be exported so external add-ons can use them

config/setup/controller.go

 package setup
 
 import (
+	"fmt"
+	"net/http"
+	"strings"
+
 	"github.com/mholt/caddy/config/parse"
+	"github.com/mholt/caddy/middleware"
 	"github.com/mholt/caddy/server"
 )
 
+// Controller is given to the setup function of middlewares which
+// gives them access to be able to read tokens and set config.
 type Controller struct {
 	*server.Config
 	parse.Dispenser
 }
+
+// NewTestController creates a new *Controller for
+// the input specified, with a filename of "Testfile"
+//
+// Used primarily for testing but needs to be exported so
+// add-ons can use this as a convenience.
+func NewTestController(input string) *Controller {
+	return &Controller{
+		Config:    &server.Config{},
+		Dispenser: parse.NewDispenser("Testfile", strings.NewReader(input)),
+	}
+}
+
+// EmptyNext is a no-op function that can be passed into
+// middleware.Middleware functions so that the assignment
+// to the Next field of the Handler can be tested.
+//
+// Used primarily for testing but needs to be exported so
+// add-ons can use this as a convenience.
+var EmptyNext = middleware.HandlerFunc(func(w http.ResponseWriter, r *http.Request) (int, error) {
+	return 0, nil
+})
+
+// SameNext does a pointer comparison between next1 and next2.
+//
+// Used primarily for testing but needs to be exported so
+// add-ons can use this as a convenience.
+func SameNext(next1, next2 middleware.Handler) bool {
+	return fmt.Sprintf("%v", next1) == fmt.Sprintf("%v", next2)
+}

config/setup/controller_test.go

-package setup
-
-import (
-	"fmt"
-	"net/http"
-	"strings"
-
-	"github.com/mholt/caddy/config/parse"
-	"github.com/mholt/caddy/middleware"
-	"github.com/mholt/caddy/server"
-)
-
-// NewTestController creates a new *Controller for
-// the input specified, with a filename of "Testfile"
-func NewTestController(input string) *Controller {
-	return &Controller{
-		Config:    &server.Config{},
-		Dispenser: parse.NewDispenser("Testfile", strings.NewReader(input)),
-	}
-}
-
-// EmptyNext is a no-op function that can be passed into
-// middleware.Middleware functions so that the assignment
-// to the Next field of the Handler can be tested.
-var EmptyNext = middleware.HandlerFunc(func(w http.ResponseWriter, r *http.Request) (int, error) {
-	return 0, nil
-})
-
-// SameNext does a pointer comparison between next1 and next2.
-func SameNext(next1, next2 middleware.Handler) bool {
-	return fmt.Sprintf("%v", next1) == fmt.Sprintf("%v", next2)
-}