You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: plugin_test.go
    path of file: ./repos/gitkube/vendor/k8s.io/client-go/rest
    
    the code of the file until where you have to start completion: /*
Copyright 2016 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 t
    
func TestAuthPluginWrapTransport(t *testing.T) {
	if err := RegisterAuthProviderPlugin("pluginA", pluginAProvider); err != nil {
		t.Errorf("Unexpected error: failed to register pluginA: %v", err)
	}
	if err := RegisterAuthProviderPlugin("pluginB", pluginBProvider); err != nil {
		t.Errorf("Unexpected error: failed to register pluginB: %v", err)
	}
	if err := RegisterAuthProviderPlugin("pluginFail", pluginFailProvider); err != nil {
		t.Errorf("Unexpected error: failed to register pluginFail: %v", err)
	}
	testCases := []struct {
		useWrapTransport bool
		plugin           string
		expectErr        bool
		expectPluginA    bool
		expectPluginB    bool
	}{
		{false, "", false, false, false},
		{false, "pluginA", false, true, false},
		{false, "pluginB", false, false, true},
		{false, "pluginFail", true, false, false},
		{false, "pluginUnknown", true, false, false},
	}
	for i, tc := range testCases {
		c := Config{}
		if tc.useWrapTransport {
			// Specify an existing WrapTransport in the config to make sure that
			// plugins play nicely.
			c.WrapTransport = func(rt http.RoundTripper) http.RoundTripper {
				return &wrapTransport{rt}
			}
		}
		if len(tc.plugin) != 0 {
			c.AuthProvider = &clientcmdapi.AuthProviderConfig{Name: tc.plugin}
		}
		tConfig, err := c.TransportConfig()
		if err != nil {
			// Unknown/bad plugins are expected to fail here.
			if !tc.expectErr {
				t.Errorf("%d. Did not expect errors loading Auth Plugin: %q. Got: %v", i, tc.plugin, err)
			}
			continue
		}
		var fullyWrappedTransport http.RoundTripper
		fullyWrappedTransport = &emptyTransport{}
		if tConfig.WrapTransport != nil {
			fullyWrappedTransport = tConfig.WrapTransport(&emptyTransport{})
		}
		res, err := fullyWrappedTransport.RoundTrip(&http.Request{})
		if err != nil {
			t.Errorf("%d. Unexpected error in RoundTrip: %v", i, err)
			continue
		}
		hasWrapTransport := res.Header.Get("wrapTransport") == "Y"
		hasPluginA := res.Header.Get("pluginA") == "Y"
		hasPluginB := res.Header.Get("pluginB") == "Y"
		if hasWrapTransport != tc.useWrapTransport {
			t.Errorf("%d. Expected Existing config.WrapTransport: %t; Got: %t", i, tc.useWrapTransport, hasWrapTransport)
		}
		if hasPluginA != tc.expectPluginA {
			t.Errorf("%d. Expected Plugin A: %t; Got: %t", i, tc.expectPluginA, hasPluginA)
		}
		if hasPluginB != tc.expectPluginB {
			t.Errorf("%d. Expected Plugin B: %t; Got: %t", i, tc.expectPluginB, hasPluginB)
		}
	}
}