Move endpoints test-helper funcs to a package

pkg/api/endpoints/testing/make.go

@@ -0,0 +1,70 @@
+/*
+Copyright 2021 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 (
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+
+	api "k8s.io/kubernetes/pkg/apis/core"
+)
+
+// Tweak is a function that modifies a Endpoints.
+type Tweak func(*api.Endpoints)
+
+// MakeEndpoints helps construct Endpoints objects (which pass API validation)
+// more legibly and tersely than a Go struct definition.
+func MakeEndpoints(name string, addrs []api.EndpointAddress, ports []api.EndpointPort, tweaks ...Tweak) *api.Endpoints {
+	// NOTE: Any field that would be populated by defaulting needs to be
+	// present and valid here.
+	eps := &api.Endpoints{
+		ObjectMeta: metav1.ObjectMeta{
+			Name:      name,
+			Namespace: metav1.NamespaceDefault,
+		},
+		Subsets: []api.EndpointSubset{{
+			Addresses: addrs,
+			Ports:     ports,
+		}},
+	}
+
+	for _, tweak := range tweaks {
+		tweak(eps)
+	}
+
+	return eps
+}
+
+// MakeEndpointAddress helps construct EndpointAddress objects which pass API
+// validation.
+func MakeEndpointAddress(ip string, pod string) api.EndpointAddress {
+	return api.EndpointAddress{
+		IP: ip,
+		TargetRef: &api.ObjectReference{
+			Name:      pod,
+			Namespace: metav1.NamespaceDefault,
+		},
+	}
+}
+
+// MakeEndpointPort helps construct EndpointPort objects which pass API
+// validation.
+func MakeEndpointPort(name string, port int) api.EndpointPort {
+	return api.EndpointPort{
+		Name: name,
+		Port: int32(port),
+	}
+}