[client-go] Add fake scale client

This adds a new fake scale client (for use in testing) to match the
new polymorphic scale client.

hack/.golint_failures

@@ -716,6 +716,7 @@ staging/src/k8s.io/client-go/plugin/pkg/client/auth/oidc
 staging/src/k8s.io/client-go/rest
 staging/src/k8s.io/client-go/rest/fake
 staging/src/k8s.io/client-go/scale
+staging/src/k8s.io/client-go/scale/fake
 staging/src/k8s.io/client-go/scale/scheme
 staging/src/k8s.io/client-go/scale/scheme/autoscalingv1
 staging/src/k8s.io/client-go/scale/scheme/extensionsint

staging/src/k8s.io/client-go/scale/BUILD

@@ -65,6 +65,7 @@ filegroup(
     name = "all-srcs",
     srcs = [
         ":package-srcs",
+        "//staging/src/k8s.io/client-go/scale/fake:all-srcs",
         "//staging/src/k8s.io/client-go/scale/scheme:all-srcs",
     ],
     tags = ["automanaged"],

staging/src/k8s.io/client-go/scale/fake/BUILD

@@ -0,0 +1,28 @@
+load("@io_bazel_rules_go//go:def.bzl", "go_library")
+
+go_library(
+    name = "go_default_library",
+    srcs = ["client.go"],
+    importpath = "k8s.io/client-go/scale/fake",
+    visibility = ["//visibility:public"],
+    deps = [
+        "//vendor/k8s.io/api/autoscaling/v1:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/runtime/schema:go_default_library",
+        "//vendor/k8s.io/client-go/scale:go_default_library",
+        "//vendor/k8s.io/client-go/testing:go_default_library",
+    ],
+)
+
+filegroup(
+    name = "package-srcs",
+    srcs = glob(["**"]),
+    tags = ["automanaged"],
+    visibility = ["//visibility:private"],
+)
+
+filegroup(
+    name = "all-srcs",
+    srcs = [":package-srcs"],
+    tags = ["automanaged"],
+    visibility = ["//visibility:public"],
+)

staging/src/k8s.io/client-go/scale/fake/client.go

@@ -0,0 +1,67 @@
+/*
+Copyright 2017 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 fake provides a fake client interface to arbitrary Kubernetes
+// APIs that exposes common high level operations and exposes common
+// metadata.
+package fake
+
+import (
+	autoscalingapi "k8s.io/api/autoscaling/v1"
+	"k8s.io/apimachinery/pkg/runtime/schema"
+	"k8s.io/client-go/scale"
+	"k8s.io/client-go/testing"
+)
+
+// FakeScaleClient provides a fake implementation of scale.ScalesGetter.
+type FakeScaleClient struct {
+	testing.Fake
+}
+
+func (f *FakeScaleClient) Scales(namespace string) scale.ScaleInterface {
+	return &fakeNamespacedScaleClient{
+		namespace: namespace,
+		fake:      &f.Fake,
+	}
+}
+
+type fakeNamespacedScaleClient struct {
+	namespace string
+	fake      *testing.Fake
+}
+
+func (f *fakeNamespacedScaleClient) Get(resource schema.GroupResource, name string) (*autoscalingapi.Scale, error) {
+	obj, err := f.fake.
+		Invokes(testing.NewGetSubresourceAction(resource.WithVersion(""), f.namespace, "scale", name), &autoscalingapi.Scale{})
+
+	if err != nil {
+		return nil, err
+	}
+
+	return obj.(*autoscalingapi.Scale), err
+}
+
+func (f *fakeNamespacedScaleClient) Update(resource schema.GroupResource, scale *autoscalingapi.Scale) (*autoscalingapi.Scale, error) {
+	obj, err := f.fake.
+		Invokes(testing.NewUpdateSubresourceAction(resource.WithVersion(""), f.namespace, "scale", scale), &autoscalingapi.Scale{})
+
+	if err != nil {
+		return nil, err
+	}
+
+	return obj.(*autoscalingapi.Scale), err
+
+}