OK, my dream-idea is implemented. TODO: Some examples and doc.go is not updated yet, comments on the mvc/di subpackage, the tutorial/vuejs-todo-mvc is running but not finished yet (it's using browser's localstorage and it should be replaced by the http requests that are registered via iris mvc

Former-commit-id: 0ea7e01ce1d78bcb78b40f3b0f5c03ad7c9abaea

mvc/param_test.go

@@ -0,0 +1,66 @@
+package mvc
+
+import (
+	"testing"
+
+	"github.com/kataras/iris/context"
+)
+
+func TestPathParamsBinder(t *testing.T) {
+	m := NewEngine()
+	m.Dependencies.Add(PathParamsBinder)
+
+	got := ""
+
+	h := m.Handler(func(params PathParams) {
+		got = params.Get("firstname") + params.Get("lastname")
+	})
+
+	ctx := context.NewContext(nil)
+	ctx.Params().Set("firstname", "Gerasimos")
+	ctx.Params().Set("lastname", "Maropoulos")
+	h(ctx)
+	expected := "GerasimosMaropoulos"
+	if got != expected {
+		t.Fatalf("expected the params 'firstname' + 'lastname' to be '%s' but got '%s'", expected, got)
+	}
+}
+func TestPathParamBinder(t *testing.T) {
+	m := NewEngine()
+	m.Dependencies.Add(PathParamBinder("username"))
+
+	got := ""
+	executed := false
+	h := m.Handler(func(username PathParam) {
+		// this should not be fired at all if "username" param wasn't found at all.
+		// although router is responsible for that but the `ParamBinder` makes that check as well because
+		// the end-developer may put a param as input argument on her/his function but
+		// on its route's path didn't describe the path parameter,
+		// the handler fires a warning and stops the execution for the invalid handler to protect the user.
+		executed = true
+		got = username.String()
+	})
+
+	expectedUsername := "kataras"
+	ctx := context.NewContext(nil)
+	ctx.Params().Set("username", expectedUsername)
+	h(ctx)
+
+	if got != expectedUsername {
+		t.Fatalf("expected the param 'username' to be '%s' but got '%s'", expectedUsername, got)
+	}
+
+	// test the non executed if param not found.
+	executed = false
+	got = ""
+
+	ctx2 := context.NewContext(nil)
+	h(ctx2)
+
+	if got != "" {
+		t.Fatalf("expected the param 'username' to be entirely empty but got '%s'", got)
+	}
+	if executed {
+		t.Fatalf("expected the handler to not be executed")
+	}
+}