Add deepobject support for test unmarshalers

Author: James Waters

deepobject.go

@@ -1,6 +1,7 @@
 package runtime
 
 import (
+	"encoding"
 	"encoding/json"
 	"errors"
 	"fmt"
@@ -199,6 +200,18 @@ func assignPathValues(dst interface{}, pathValues fieldOrValue) error {
 	iv := reflect.Indirect(v)
 	it := iv.Type()
 
+	switch dst := v.Interface().(type) {
+	case Binder:
+		return dst.Bind(pathValues.value)
+	case encoding.TextUnmarshaler:
+		err := dst.UnmarshalText([]byte(pathValues.value))
+		if err != nil {
+			return fmt.Errorf("error unmarshalling text '%s': %w", pathValues.value, err)
+		}
+
+		return nil
+	}
+
 	switch it.Kind() {
 	case reflect.Map:
 		dstMap := reflect.MakeMap(iv.Type())

deepobject_test.go

@@ -6,6 +6,7 @@ import (
 	"testing"
 	"time"
 
+	"github.com/google/uuid"
 	"github.com/oapi-codegen/runtime/types"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
@@ -39,6 +40,8 @@ type AllFields struct {
 	Oda *types.Date `json:"oda,omitempty"`
 	Ti  time.Time   `json:"ti"`
 	Oti *time.Time  `json:"oti,omitempty"`
+	U   types.UUID  `json:"u"`
+	Ou  *types.UUID `json:"ou,omitempty"`
 }
 
 func TestDeepObject(t *testing.T) {
@@ -57,6 +60,7 @@ func TestDeepObject(t *testing.T) {
 	bi := MockBinder{Time: time.Date(2020, 2, 1, 0, 0, 0, 0, time.UTC)}
 	da := types.Date{Time: time.Date(2020, 2, 2, 0, 0, 0, 0, time.UTC)}
 	ti := time.Now().UTC()
+	u := uuid.New()
 
 	srcObj := AllFields{
 		// Primitive types
@@ -83,6 +87,8 @@ func TestDeepObject(t *testing.T) {
 		Oda: &da,
 		Ti:  ti,
 		Oti: &ti,
+		U:   u,
+		Ou:  &u,
 	}
 
 	marshaled, err := MarshalDeepObject(srcObj, "p")