implement the makeHandler and structure the high-level mvc's API

Former-commit-id: 412118eae436981711ef57821f2d85b77a5d1a12

mvc2/mvc_test.go

@@ -0,0 +1,30 @@
+package mvc2_test
+
+import (
+	"testing"
+
+	"github.com/kataras/iris"
+	"github.com/kataras/iris/httptest"
+	"github.com/kataras/iris/mvc2"
+)
+
+var (
+	lowLevelHandler = func(ctx iris.Context) {
+		ctx.Writef("low-level handler")
+	}
+)
+
+func TestHandler(t *testing.T) {
+	app := iris.New()
+	m := mvc2.New()
+
+	// should just return a context.Handler
+	// without performance penalties.
+	app.Get("/", m.Handler(lowLevelHandler))
+
+	e := httptest.New(t, app, httptest.LogLevel("debug"))
+	// 1
+	e.GET("/").Expect().Status(httptest.StatusOK).
+		Body().Equal("low-level handler")
+
+}