From 88edf60cdef536d49b62f2e900df71c9fb7c70c4 Mon Sep 17 00:00:00 2001
From: krrrr38 <k.kaizu38@gmail.com>
Date: Wed, 30 Sep 2026 13:21:41 +0900
Subject: [PATCH] =?UTF-8?q?Go=20=E3=81=AE=E5=AF=BE=E8=B1=A1=E3=83=90?=
 =?UTF-8?q?=E3=83=BC=E3=82=B8=E3=83=A7=E3=83=B3=E3=82=92=201.25=20/=201.26?=
 =?UTF-8?q?=20/=201.27=20=E3=81=AB=E3=81=97=E3=81=A6=20CI=20=E3=82=92=20ma?=
 =?UTF-8?q?trix=20=E5=8C=96=E3=81=99=E3=82=8B?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

EOL の 1.24 以前を対象外にし、go.mod を go 1.25.0 に上げる。
patch 番号なしの go 1.22 は toolchain 切り替え時に存在しない版として
解決され toolchain not found になり得るため、patch 付きで記述する。

test-go.yml は 1.25 / 1.26 / 1.27 の matrix で実行し、GOTOOLCHAIN=local で
指定バージョンのまま検証する。

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Signed-off-by: krrrr38 <k.kaizu38@gmail.com>
---
 .github/workflows/test-go.yml | 11 +++++++++--
 golang/README.md              |  2 +-
 golang/go.mod                 |  2 +-
 3 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/.github/workflows/test-go.yml b/.github/workflows/test-go.yml
index a377324..85cb6a2 100644
--- a/.github/workflows/test-go.yml
+++ b/.github/workflows/test-go.yml
@@ -9,20 +9,27 @@ permissions:
 jobs:
   build:
     runs-on: ubuntu-latest
-    name: Build
+    name: Build (Go ${{ matrix.go-version }})
+    strategy:
+      matrix:
+        go-version: ['1.25', '1.26', '1.27']
     timeout-minutes: 5
     defaults:
       run:
         working-directory: golang
     permissions:
       contents: read
+    env:
+      # matrix で指定したバージョンのまま検証するため、toolchain の自動切り替えを止める
+      GOTOOLCHAIN: local
     steps:
       - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
         with:
           persist-credentials: false
       - uses: actions/setup-go@b7ad1dad31e06c5925ef5d2fc7ad053ef454303e # v7.0.0
         with:
-          go-version-file: 'golang/go.mod'
+          go-version: ${{ matrix.go-version }}
+          cache-dependency-path: 'golang/go.sum'
           cache: true
       - run: go mod download
       - name: Verify interview template and patch
diff --git a/golang/README.md b/golang/README.md
index 231f490..ccdbf99 100644
--- a/golang/README.md
+++ b/golang/README.md
@@ -2,7 +2,7 @@
 
 ## 開発
 
-- Go 1.22+
+- Go 1.25+
 
 ```shell
 # 準備
diff --git a/golang/go.mod b/golang/go.mod
index 6aebcf4..06c3c50 100644
--- a/golang/go.mod
+++ b/golang/go.mod
@@ -1,5 +1,5 @@
 module folio/codinginterview
 
-go 1.22
+go 1.25.0
 
 require github.com/shopspring/decimal v1.4.0