diff --git a/staging/src/k8s.io/apiserver/pkg/endpoints/apiserver_test.go b/staging/src/k8s.io/apiserver/pkg/endpoints/apiserver_test.go
index 53561de7e86..cbc72255b23 100644
--- a/staging/src/k8s.io/apiserver/pkg/endpoints/apiserver_test.go
+++ b/staging/src/k8s.io/apiserver/pkg/endpoints/apiserver_test.go
@@ -147,6 +147,8 @@ func addGrouplessTypes() {
 	scheme.AddKnownTypes(grouplessInternalGroupVersion,
 		&genericapitesting.Simple{}, &genericapitesting.SimpleList{}, &metav1.ExportOptions{},
 		&genericapitesting.SimpleGetOptions{}, &genericapitesting.SimpleRoot{})
+
+	utilruntime.Must(genericapitesting.RegisterConversions(scheme))
 }
 
 func addTestTypes() {
@@ -166,6 +168,8 @@ func addTestTypes() {
 	scheme.AddKnownTypes(testGroup2Version, &genericapitesting.SimpleXGSubresource{}, &metav1.ExportOptions{})
 	scheme.AddKnownTypes(testInternalGroup2Version, &genericapitesting.SimpleXGSubresource{}, &metav1.ExportOptions{})
 	metav1.AddToGroupVersion(scheme, testGroupVersion)
+
+	utilruntime.Must(genericapitesting.RegisterConversions(scheme))
 }
 
 func addNewTestTypes() {
@@ -175,6 +179,8 @@ func addNewTestTypes() {
 		&examplev1.Pod{},
 	)
 	metav1.AddToGroupVersion(scheme, newGroupVersion)
+
+	utilruntime.Must(genericapitesting.RegisterConversions(scheme))
 }
 
 func init() {
diff --git a/staging/src/k8s.io/apiserver/pkg/endpoints/testing/BUILD b/staging/src/k8s.io/apiserver/pkg/endpoints/testing/BUILD
index 250091b756d..c8fa347213a 100644
--- a/staging/src/k8s.io/apiserver/pkg/endpoints/testing/BUILD
+++ b/staging/src/k8s.io/apiserver/pkg/endpoints/testing/BUILD
@@ -8,6 +8,7 @@ load(
 go_library(
     name = "go_default_library",
     srcs = [
+        "conversion.go",
         "doc.go",
         "types.go",
         "zz_generated.deepcopy.go",
@@ -16,6 +17,7 @@ go_library(
     importpath = "k8s.io/apiserver/pkg/endpoints/testing",
     deps = [
         "//staging/src/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library",
+        "//staging/src/k8s.io/apimachinery/pkg/conversion:go_default_library",
         "//staging/src/k8s.io/apimachinery/pkg/runtime:go_default_library",
     ],
 )
diff --git a/staging/src/k8s.io/apiserver/pkg/endpoints/testing/conversion.go b/staging/src/k8s.io/apiserver/pkg/endpoints/testing/conversion.go
new file mode 100644
index 00000000000..446264439c5
--- /dev/null
+++ b/staging/src/k8s.io/apiserver/pkg/endpoints/testing/conversion.go
@@ -0,0 +1,60 @@
+/*
+Copyright 2020 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package testing
+
+import (
+	"net/url"
+
+	"k8s.io/apimachinery/pkg/conversion"
+	"k8s.io/apimachinery/pkg/runtime"
+)
+
+func convertUrlValuesToSimpleGetOptions(in *url.Values, out *SimpleGetOptions, s conversion.Scope) error {
+	// Skip TypeMeta field.
+
+	if values, ok := map[string][]string(*in)["param1"]; ok && len(values) > 0 {
+		if err := runtime.Convert_Slice_string_To_string(&values, &out.Param1, s); err != nil {
+			return err
+		}
+	} else {
+		out.Param1 = ""
+	}
+	if values, ok := map[string][]string(*in)["param2"]; ok && len(values) > 0 {
+		if err := runtime.Convert_Slice_string_To_string(&values, &out.Param2, s); err != nil {
+			return err
+		}
+	} else {
+		out.Param2 = ""
+	}
+	if values, ok := map[string][]string(*in)["atAPath"]; ok && len(values) > 0 {
+		if err := runtime.Convert_Slice_string_To_string(&values, &out.Path, s); err != nil {
+			return err
+		}
+	} else {
+		out.Path = ""
+	}
+	return nil
+}
+
+func RegisterConversions(s *runtime.Scheme) error {
+	if err := s.AddConversionFunc((*url.Values)(nil), (*SimpleGetOptions)(nil), func(a, b interface{}, scope conversion.Scope) error {
+		return convertUrlValuesToSimpleGetOptions(a.(*url.Values), b.(*SimpleGetOptions), scope)
+	}); err != nil {
+		return err
+	}
+	return nil
+}