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: auth_test.go
    path of file: ./repos/pocketbase/tools/auth
    
    the code of the file until where you have to start completion: package auth_test

import (
	"testing"

	"github.com/pocketbase/pocketbase/tools/auth"
)

func TestNewProviderByName(t *testing.T) {
	var err error
	var p auth.Provider

	// invalid
	p, err = auth.NewProviderByName("invalid")
	if err == nil {
		t.Error("Expected error, got nil")
	}
	if p != nil {
		t.Errorf("Expected provider to be nil, got %v", p)
	}

	// google
	p, err = auth.NewProviderByName(auth.NameGoogle)
	if err != nil {
		t.Errorf("Expected nil, got error %v", err)
	}
	if _, ok := p.(*auth.Google); !ok {
		t.Error("Expected to be instance of *auth.Google")
	}

	// facebook
	p, err = auth.NewProviderByName(auth.NameFacebook)
	if err != nil {
		t.Errorf("Expected nil, got error %v", err)
	}
	if _, ok := p.(*auth.Facebook); !ok {
		t.Error("Expected to be instance of *auth.Facebook")
	}

	// github
	p, err = auth.NewProviderByName(auth.NameGithub)
	if err != nil {
		t.Errorf("Expected nil, got error %v", err)
	}
	if _, ok := p.(*auth.Github); !ok {
		t.Error("Expected to be instance of *auth.Github")
	}

	// gitlab
	p, err = auth.NewProviderByName(auth.NameGitlab)
	if err != nil {
		t.Errorf("Expected nil, got error %v", err)
	}
	if _, ok := p.(*auth.Gitlab); !ok {
		t.Error("Expected to be instance of *auth.Gitlab")
	}

	// twitter
	p, err = auth.NewProviderByName(auth.NameTwitter)
	if err != nil {
		t.Errorf("Expected nil, got error %v", err)
	}
	if _, ok := p.(*auth.Twitter); !ok {
		t.Error("Expected to be instance of *auth.Twitter")
	}

	// discord
	p, err = auth.NewProviderByName(auth.NameDiscord)
	if err != nil {
		t.Errorf("Expected nil, got error %v", err)
	}
	if _, ok := p.(*auth.Discord); !ok {
		t.Error("Expected to be instance of *auth.Discord")
	}

	// microsoft
	p, err = auth.NewProviderByName(auth.NameMicrosoft)
	if err != nil {
		t.Errorf("Expected nil, got error %v", err)
	}
	if _, ok := p.(*auth.Microsoft); !ok {
		t.Error("Expected to be instanc
    
func TestNewProviderByName(t *testing.T) {
	var err error
	var p auth.Provider

	// invalid
	p, err = auth.NewProviderByName("invalid")
	if err == nil {
		t.Error("Expected error, got nil")
	}
	if p != nil {
		t.Errorf("Expected provider to be nil, got %v", p)
	}

	// google
	p, err = auth.NewProviderByName(auth.NameGoogle)
	if err != nil {
		t.Errorf("Expected nil, got error %v", err)
	}
	if _, ok := p.(*auth.Google); !ok {
		t.Error("Expected to be instance of *auth.Google")
	}

	// facebook
	p, err = auth.NewProviderByName(auth.NameFacebook)
	if err != nil {
		t.Errorf("Expected nil, got error %v", err)
	}
	if _, ok := p.(*auth.Facebook); !ok {
		t.Error("Expected to be instance of *auth.Facebook")
	}

	// github
	p, err = auth.NewProviderByName(auth.NameGithub)
	if err != nil {
		t.Errorf("Expected nil, got error %v", err)
	}
	if _, ok := p.(*auth.Github); !ok {
		t.Error("Expected to be instance of *auth.Github")
	}

	// gitlab
	p, err = auth.NewProviderByName(auth.NameGitlab)
	if err != nil {
		t.Errorf("Expected nil, got error %v", err)
	}
	if _, ok := p.(*auth.Gitlab); !ok {
		t.Error("Expected to be instance of *auth.Gitlab")
	}

	// twitter
	p, err = auth.NewProviderByName(auth.NameTwitter)
	if err != nil {
		t.Errorf("Expected nil, got error %v", err)
	}
	if _, ok := p.(*auth.Twitter); !ok {
		t.Error("Expected to be instance of *auth.Twitter")
	}

	// discord
	p, err = auth.NewProviderByName(auth.NameDiscord)
	if err != nil {
		t.Errorf("Expected nil, got error %v", err)
	}
	if _, ok := p.(*auth.Discord); !ok {
		t.Error("Expected to be instance of *auth.Discord")
	}

	// microsoft
	p, err = auth.NewProviderByName(auth.NameMicrosoft)
	if err != nil {
		t.Errorf("Expected nil, got error %v", err)
	}
	if _, ok := p.(*auth.Microsoft); !ok {
		t.Error("Expected to be instance of *auth.Microsoft")
	}

	// spotify
	p, err = auth.NewProviderByName(auth.NameSpotify)
	if err != nil {
		t.Errorf("Expected nil, got error %v", err)
	}
	if _, ok := p.(*auth.Spotify); !ok {
		t.Error("Expected to be instance of *auth.Spotify")
	}

	// kakao
	p, err = auth.NewProviderByName(auth.NameKakao)
	if err != nil {
		t.Errorf("Expected nil, got error %v", err)
	}
	if _, ok := p.(*auth.Kakao); !ok {
		t.Error("Expected to be instance of *auth.Kakao")
	}

	// twitch
	p, err = auth.NewProviderByName(auth.NameTwitch)
	if err != nil {
		t.Errorf("Expected nil, got error %v", err)
	}
	if _, ok := p.(*auth.Twitch); !ok {
		t.Error("Expected to be instance of *auth.Twitch")
	}

	// strava
	p, err = auth.NewProviderByName(auth.NameStrava)
	if err != nil {
		t.Errorf("Expected nil, got error %v", err)
	}
	if _, ok := p.(*auth.Strava); !ok {
		t.Error("Expected to be instance of *auth.Strava")
	}

	// gitee
	p, err = auth.NewProviderByName(auth.NameGitee)
	if err != nil {
		t.Errorf("Expected nil, got error %v", err)
	}
	if _, ok := p.(*auth.Gitee); !ok {
		t.Error("Expected to be instance of *auth.Gitee")
	}

	// livechat
	p, err = auth.NewProviderByName(auth.NameLivechat)
	if err != nil {
		t.Errorf("Expected nil, got error %v", err)
	}
	if _, ok := p.(*auth.Livechat); !ok {
		t.Error("Expected to be instance of *auth.Livechat")
	}

	// gitea
	p, err = auth.NewProviderByName(auth.NameGitea)
	if err != nil {
		t.Errorf("Expected nil, got error %v", err)
	}
	if _, ok := p.(*auth.Gitea); !ok {
		t.Error("Expected to be instance of *auth.Gitea")
	}

	// oidc
	p, err = auth.NewProviderByName(auth.NameOIDC)
	if err != nil {
		t.Errorf("Expected nil, got error %v", err)
	}
	if _, ok := p.(*auth.OIDC); !ok {
		t.Error("Expected to be instance of *auth.OIDC")
	}

	// oidc2
	p, err = auth.NewProviderByName(auth.NameOIDC + "2")
	if err != nil {
		t.Errorf("Expected nil, got error %v", err)
	}
	if _, ok := p.(*auth.OIDC); !ok {
		t.Error("Expected to be instance of *auth.OIDC")
	}

	// oidc3
	p, err = auth.NewProviderByName(auth.NameOIDC + "3")
	if err != nil {
		t.Errorf("Expected nil, got error %v", err)
	}
	if _, ok := p.(*auth.OIDC); !ok {
		t.Error("Expected to be instance of *auth.OIDC")
	}

	// apple
	p, err = auth.NewProviderByName(auth.NameApple)
	if err != nil {
		t.Errorf("Expected nil, got error %v", err)
	}
	if _, ok := p.(*auth.Apple); !ok {
		t.Error("Expected to be instance of *auth.Apple")
	}

	// instagram
	p, err = auth.NewProviderByName(auth.NameInstagram)
	if err != nil {
		t.Errorf("Expected nil, got error %v", err)
	}
	if _, ok := p.(*auth.Instagram); !ok {
		t.Error("Expected to be instance of *auth.Instagram")
	}

	// vk
	p, err = auth.NewProviderByName(auth.NameVK)
	if err != nil {
		t.Errorf("Expected nil, got error %v", err)
	}
	if _, ok := p.(*auth.VK); !ok {
		t.Error("Expected to be instance of *auth.VK")
	}

	// yandex
	p, err = auth.NewProviderByName(auth.NameYandex)
	if err != nil {
		t.Errorf("Expected nil, got error %v", err)
	}
	if _, ok := p.(*auth.Yandex); !ok {
		t.Error("Expected to be instance of *auth.Yandex")
	}

	// patreon
	p, err = auth.NewProviderByName(auth.NamePatreon)
	if err != nil {
		t.Errorf("Expected nil, got error %v", err)
	}
	if _, ok := p.(*auth.Patreon); !ok {
		t.Error("Expected to be instance of *auth.Patreon")
	}

	// mailcow
	p, err = auth.NewProviderByName(auth.NameMailcow)
	if err != nil {
		t.Errorf("Expected nil, got error %v", err)
	}
	if _, ok := p.(*auth.Mailcow); !ok {
		t.Error("Expected to be instance of *auth.Mailcow")
	}

	// bitbucket
	p, err = auth.NewProviderByName(auth.NameBitbucket)
	if err != nil {
		t.Errorf("Expected nil, got error %v", err)
	}
	if _, ok := p.(*auth.Bitbucket); !ok {
		t.Error("Expected to be instance of *auth.Bitbucket")
	}

	// planningcenter
	p, err = auth.NewProviderByName(auth.NamePlanningcenter)
	if err != nil {
		t.Errorf("Expected nil, got error %v", err)
	}
	if _, ok := p.(*auth.Planningcenter); !ok {
		t.Error("Expected to be instance of *auth.Planningcenter")
	}
}