Add typeurl package for TypeUrl registration

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>

typeurl/types_test.go

@@ -0,0 +1,118 @@
+package typeurl
+
+import (
+	"path/filepath"
+	"reflect"
+	"testing"
+)
+
+type test struct {
+	Name string
+	Age  int
+}
+
+func clear() {
+	registry = make(map[reflect.Type]string)
+}
+
+func TestRegsiterValueGetValue(t *testing.T) {
+	clear()
+	expected := filepath.Join(Namespace, "test")
+	Register(test{}, "test")
+
+	url, err := TypeUrl(test{})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if url != expected {
+		t.Fatalf("expected %q but received %q", expected, url)
+	}
+}
+
+func TestRegsiterValueGetPointer(t *testing.T) {
+	clear()
+	expected := filepath.Join(Namespace, "test")
+	Register(test{}, "test")
+
+	url, err := TypeUrl(&test{})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if url != expected {
+		t.Fatalf("expected %q but received %q", expected, url)
+	}
+}
+
+func TestRegsiterPointerGetPointer(t *testing.T) {
+	clear()
+	expected := filepath.Join(Namespace, "test")
+	Register(&test{}, "test")
+
+	url, err := TypeUrl(&test{})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if url != expected {
+		t.Fatalf("expected %q but received %q", expected, url)
+	}
+}
+
+func TestRegsiterPointerGetValue(t *testing.T) {
+	clear()
+	expected := filepath.Join(Namespace, "test")
+	Register(&test{}, "test")
+
+	url, err := TypeUrl(test{})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if url != expected {
+		t.Fatalf("expected %q but received %q", expected, url)
+	}
+}
+
+func TestMarshal(t *testing.T) {
+	clear()
+	expected := filepath.Join(Namespace, "test")
+	Register(test{}, "test")
+
+	v := &test{
+		Name: "koye",
+		Age:  6,
+	}
+	any, err := MarshalAny(v)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if any.TypeUrl != expected {
+		t.Fatalf("expected %q but received %q", expected, any.TypeUrl)
+	}
+}
+
+func TestMarshalUnmarshal(t *testing.T) {
+	clear()
+	Register(test{}, "test")
+
+	v := &test{
+		Name: "koye",
+		Age:  6,
+	}
+	any, err := MarshalAny(v)
+	if err != nil {
+		t.Fatal(err)
+	}
+	nv, err := UnmarshalAny(any)
+	if err != nil {
+		t.Fatal(err)
+	}
+	td, ok := nv.(*test)
+	if !ok {
+		t.Fatal("expected value to cast to *test")
+	}
+	if td.Name != "koye" {
+		t.Fatal("invalid name")
+	}
+	if td.Age != 6 {
+		t.Fatal("invalid age")
+	}
+}