From 3579fb30122586cf5620159dab9b29d571ab88ff Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Markus=20Th=C3=B6mmes?= <markusthoemmes@me.com>
Date: Mon, 15 Mar 2021 14:47:24 +0100
Subject: [PATCH] Implement a FakeClient interface

Kubernetes-commit: cf26825e3d9b89526e13bb53f74354593477205c
---
 dynamic/fake/simple.go                 |  7 ++-
 kubernetes/fake/clientset_generated.go |  5 +-
 testing/interface.go                   | 66 ++++++++++++++++++++++++++
 3 files changed, 75 insertions(+), 3 deletions(-)
 create mode 100644 testing/interface.go

diff --git a/dynamic/fake/simple.go b/dynamic/fake/simple.go
index 1891998f..82f805d1 100644
--- a/dynamic/fake/simple.go
+++ b/dynamic/fake/simple.go
@@ -115,12 +115,15 @@ type dynamicResourceClient struct {
 	listKind  string
 }
 
+var (
+	_ dynamic.Interface  = &FakeDynamicClient{}
+	_ testing.FakeClient = &FakeDynamicClient{}
+)
+
 func (c *FakeDynamicClient) Tracker() testing.ObjectTracker {
 	return c.tracker
 }
 
-var _ dynamic.Interface = &FakeDynamicClient{}
-
 func (c *FakeDynamicClient) Resource(resource schema.GroupVersionResource) dynamic.NamespaceableResourceInterface {
 	return &dynamicResourceClient{client: c, resource: resource, listKind: c.gvrToListKind[resource]}
 }
diff --git a/kubernetes/fake/clientset_generated.go b/kubernetes/fake/clientset_generated.go
index c09d8999..6f6fc67a 100644
--- a/kubernetes/fake/clientset_generated.go
+++ b/kubernetes/fake/clientset_generated.go
@@ -158,7 +158,10 @@ func (c *Clientset) Tracker() testing.ObjectTracker {
 	return c.tracker
 }
 
-var _ clientset.Interface = &Clientset{}
+var (
+	_ clientset.Interface = &Clientset{}
+	_ testing.FakeClient  = &Clientset{}
+)
 
 // AdmissionregistrationV1 retrieves the AdmissionregistrationV1Client
 func (c *Clientset) AdmissionregistrationV1() admissionregistrationv1.AdmissionregistrationV1Interface {
diff --git a/testing/interface.go b/testing/interface.go
new file mode 100644
index 00000000..266c6ba3
--- /dev/null
+++ b/testing/interface.go
@@ -0,0 +1,66 @@
+/*
+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 (
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/apimachinery/pkg/watch"
+	restclient "k8s.io/client-go/rest"
+)
+
+type FakeClient interface {
+	// Tracker gives access to the ObjectTracker internal to the fake client.
+	Tracker() ObjectTracker
+
+	// AddReactor appends a reactor to the end of the chain.
+	AddReactor(verb, resource string, reaction ReactionFunc)
+
+	// PrependReactor adds a reactor to the beginning of the chain.
+	PrependReactor(verb, resource string, reaction ReactionFunc)
+
+	// AddWatchReactor appends a reactor to the end of the chain.
+	AddWatchReactor(resource string, reaction WatchReactionFunc)
+
+	// PrependWatchReactor adds a reactor to the beginning of the chain.
+	PrependWatchReactor(resource string, reaction WatchReactionFunc)
+
+	// AddProxyReactor appends a reactor to the end of the chain.
+	AddProxyReactor(resource string, reaction ProxyReactionFunc)
+
+	// PrependProxyReactor adds a reactor to the beginning of the chain.
+	PrependProxyReactor(resource string, reaction ProxyReactionFunc)
+
+	// Invokes records the provided Action and then invokes the ReactionFunc that
+	// handles the action if one exists. defaultReturnObj is expected to be of the
+	// same type a normal call would return.
+	Invokes(action Action, defaultReturnObj runtime.Object) (runtime.Object, error)
+
+	// InvokesWatch records the provided Action and then invokes the ReactionFunc
+	// that handles the action if one exists.
+	InvokesWatch(action Action) (watch.Interface, error)
+
+	// InvokesProxy records the provided Action and then invokes the ReactionFunc
+	// that handles the action if one exists.
+	InvokesProxy(action Action) restclient.ResponseWrapper
+
+	// ClearActions clears the history of actions called on the fake client.
+	ClearActions()
+
+	// Actions returns a chronologically ordered slice fake actions called on the
+	// fake client.
+	Actions() []Action
+}