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: proxy_test.go
    path of file: ./repos/juju/jujuclient
    
    the code of the file until where you have to start completion: // Copyright 2020 Canonical Ltd.
// Licensed under the AGPLv3, see LICENCE file for details.

package jujuclient_test

import (
	"github.com/juju/testing"
	jc "github.com/juju/testing/checkers"
	"go.uber.org/mock/gomock"
	gc "gopkg.in/check.v1"
	"gopkg.in/yaml.v3"

	"github.com/juju/juju/caas/kubernetes/provider/proxy"
	"github.com/juju/juju/jujuclient"
)

type proxyWrapperSuite struct {
	testing.IsolationSuite
}

var _ = gc.Suite(&proxyWrapperSuite{})

func (p *proxyWrapperSuite) TestMarshalling(c *gc.C) {
	config := proxy.ProxierConfig{
		APIHost:             "https://127.0.0.1:443",
		CAData:              "cadata====",
		Namespace:           "test",
		RemotePort:          "8123",
		Service:             "test",
		ServiceAccountToken: "token====",
	}
	proxier := proxy.NewProxier(config)
	wrapper := &jujuclient.ProxyConfWrapper{proxier}
	data, err := yaml.Marshal(wrapper)
	c.Assert(err, jc.ErrorIsNil)
	c.Assert(string(data), gc.Equals, `
type: kube
    
func (p *proxyWrapperSuite) TestUnmarshalling(c *gc.C) {
	ctrl := gomock.NewController(c)
	defer ctrl.Finish()

	config := proxy.ProxierConfig{
		APIHost:             "https://127.0.0.1:443",
		CAData:              "cadata====",
		Namespace:           "test",
		RemotePort:          "8123",
		Service:             "test",
		ServiceAccountToken: "token====",
	}
	proxier := proxy.NewProxier(config)
	rawConfig := map[string]interface{}{
		"api-host":              "https://127.0.0.1:443",
		"ca-cert":               "cadata====",
		"namespace":             "test",
		"remote-port":           "8123",
		"service":               "test",
		"service-account-token": "token====",
	}
	factory := NewMockProxyFactory(ctrl)
	factory.EXPECT().ProxierFromConfig("kubernetes-port-forward", rawConfig).Return(proxier, nil)
	p.PatchValue(&jujuclient.NewProxierFactory, func() (jujuclient.ProxyFactory, error) { return factory, nil })

	var wrapper jujuclient.ProxyConfWrapper
	err := yaml.Unmarshal([]byte(`
type: kubernetes-port-forward
config:
    api-host: https://127.0.0.1:443
    ca-cert: cadata====
    namespace: test
    remote-port: "8123"
    service: test
    service-account-token: token====
`[1:]), &wrapper)
	c.Assert(err, jc.ErrorIsNil)
	c.Assert(wrapper.Proxier.Type(), gc.Equals, "kubernetes-port-forward")
	rCfg, err := wrapper.Proxier.RawConfig()
	c.Assert(err, jc.ErrorIsNil)
	c.Assert(rCfg, gc.DeepEquals, rawConfig)
}