winebarrel https://blog.hatena.ne.jp/winebarrel/ so what https://so-wh.at/ メモ Go main.go package main import "fmt" type Foo struct { I int J int } func (foo *Foo) Sum() int { return foo.I + foo.J } func main() { foo := &Foo{1, 2} fmt.Println(foo.Sum()) } helper_test.go package main import ( "fmt" ) func (foo *Foo) Dump() string { return fmt.Sprintf("%+v", foo) } main_test.go pac… 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fso-wh.at%2Fentry%2F2025%2F10%2F10%2F120428" title=" テストの時だけメソッドをはやす - so what" class="embed-card embed-blogcard" scrolling="no" frameborder="0" style="display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;"></iframe> https://cdn-ak.f.st-hatena.com/images/fotolife/w/winebarrel/20251010/20251010120412.png Hatena Blog https://hatena.blog 2025-10-10 12:04:28 rich https://so-wh.at/entry/2025/10/10/120428 1.0 100%