Rspecでomniauthのmock + requestテストで使う方法

omniauthのテストの方法は色々と記載あったのですが、request.env の制御方法などの記事があまりなかったので、まとめました

※詳細な実装方法は参考記事から確認お願いします🙏

# support/omniauth_mock.rb
module OmniauthMocks
    def line_mock
      OmniAuth.config.mock_auth[:line] = OmniAuth::AuthHash.new({
        "expires" => true,
        "expires_at" => 1916195174, # unix timeは2030/9/21で生成
        "refresh_token" => "UNEnCk8Z0Lzb62DaFY0a",
        "token" => "eyJhbGciOiJIUzI1NiJ9.I3YcVOETzqoKsg0CqpjEDXETdYutQXJpOfH_wjrYCqtwjJbUoZMMy4M1IsZHB-PuU8IbkRZrJ6aoSyYmlTH-SLJdj51mMigJoJHJRtEmaICqTyX-UsLwFTwH6dP6JHz7VN7EqIYRpKKDcPMJQFGk_KRChXE_C7Mj-9eq8GHMRE4.I3YGhJ1gMDEz7F_nW6QpaUI6NjEV34y12XljcmhUvgA",
    
        "provider" => "line",
        "uid" => "123456",
        "info" => {
          "name" => "Mock User",
          "image" => "http://mock_image_url.com",
          "location" => "",
          "email" => "mock@example.com",
          "description" => "",
        },
        "credentials" => {
          "token" => "mock_credentails_token",
          "secret" => "mock_credentails_secret"
        },
      })
    end
end

# requestのテスト一例
describe "GET /line" do
    before { Rails.application.env_config['omniauth.auth'] = line_mock } # ここでenvを設定!!
    it "oauthが渡ってこない場合エラーになる" do
      Rails.application.env_config['omniauth.auth'] = nil
      get user_line_omniauth_callback_path
      # expect { subject }.to raise_error("request.env[omniauth.auth]がありません")
    end
  end

参考記事

“undefined method `env’ for nil:NilClass” in ‘setup_controller_for_warden’ error when testing Devise using Rspec

🍺RSpecでOmniAuthのFacebookログイン/サインアップのFeatureテストを書く

【OmniAuth + Devise】Twitterのログイン認証をテストする方法【Rspec】