net/http/httptest が推しです♡

The Go gopher was designed by Renée French.

https://gotalk.connpass.com/event/331992/

Transcript

1. おーたかこーたろー @otakakot The Go gopher was designed by Renée French. net/http/httptest が推しです♡ 2024.10.23 Go Connect #3
2. The Go gopher was designed by Renée French. みなさんテストはお好きですか？
3. The Go gopher was designed by Renée French. 私はテストが好きです。
4. The Go gopher was designed by Renée French. でもテストコードの保守は嫌いです。
5. The Go gopher was designed by Renée French. だからなるべく書きたくない。
6. The Go gopher was designed by Renée French. そんな私がたどり着いた(と思っている) net/http/httptest をご紹介
7. The Go gopher was designed by Renée French. Kotaro Otaka おーたかこーたろー Web Engineer 新卒入社 Hello Golang! Web Engineer 株式会社ビットキー 2020.04 2021.04 2022.11 @otakakot
8. The Go gopher was designed by Renée French. アジェンダ 01. net/http/httptest との出会い 02. net/http/httptest 03. net/http/httptest (私)の使い方
9. The Go gopher was designed by Renée French. アジェンダ 01. net/http/httptest との出会い 02. net/http/httptest 03. net/http/httptest (私)の使い方
10. The Go gopher was designed by Renée French. net/http/httptest との出会い • zitadel/oidc にコントリビュートしたとき • 統合テストで利用 　　　PR: https://github.com/zitadel/oidc/pull/579 　Zennの記事: OSSコントリビュートの実績を解除した
11. The Go gopher was designed by Renée French. アジェンダ 01. net/http/httptest との出会い 02. net/http/httptest 03. net/http/httptest (私)の使い方
12. The Go gopher was designed by Renée French. net/http/httptest
13. The Go gopher was designed by Renée French. net/http/httptest • NewRequest / ( NewRequestWithContext 1.23 で追加 ) ◦ リクエストを生成 ◦ http.NewRequest と違い戻り値に error がない • NewRecoder() ◦ サーバーのレスポンスを記録 • NewServer() ◦ 空いているポート番号を自動で選択してサーバーを起動
14. The Go gopher was designed by Renée French. アジェンダ 01. net/http/httptest との出会い 02. net/http/httptest 03. net/http/httptest (私)の使い方
15. The Go gopher was designed by Renée French. net/http/httptest (私)の使い方 1. NewRequest + NewRecoder を利用 ➔ 特定の Handler を対象にテスト 2. NewServer を利用 ➔ Client を用いて実際に打鍵しテスト
16. The Go gopher was designed by Renée French. テスト対象の API 入力 ${name} 出力 Hello, ${name}
17. The Go gopher was designed by Renée French. NewRequest + NewRecoder リクエストとレスポンスを作成 Hander の実行 レスポンスの検証 これだとうまく動かない場合がある ※ ※ Zennの記事: httptest.NewRequset で Go 1.22 で追加された PathValue の値を取得する にて解説
18. The Go gopher was designed by Renée French. テスト対象の Handler を登録 httptest によりサーバー起動 後片付け NewServer 準備
19. The Go gopher was designed by Renée French. NewServer ※ スライドの都合でエラーハンドリングは省略 リクエストを作成 クライアントによる打鍵 レスポンスの検証 ※ httptest でリクエストを作ると Client.Do() はエラーとなる
20. The Go gopher was designed by Renée French. いい距離感でテストと付き合っていこうね