From 787939a60c2412ee0e152eeb6f3507e681457c40 Mon Sep 17 00:00:00 2001
From: Josh Bleecher Snyder <josh@tailscale.com>
Date: Mon, 12 Jul 2021 15:02:45 -0700
Subject: [PATCH] .github/workflows: add 'go generate' CI job

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
---
 .github/workflows/go_generate.yml | 34 +++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)
 create mode 100644 .github/workflows/go_generate.yml

diff --git a/.github/workflows/go_generate.yml b/.github/workflows/go_generate.yml
new file mode 100644
index 000000000..ddf37cf10
--- /dev/null
+++ b/.github/workflows/go_generate.yml
@@ -0,0 +1,34 @@
+name: go generate
+
+on:
+  push:
+    branches:
+      - main
+      - "release-branch/*"
+  pull_request:
+    branches:
+      - "*"
+
+jobs:
+  check:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Set up Go
+        uses: actions/setup-go@v1
+        with:
+          go-version: 1.16
+
+      - name: Check out code
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+
+      - name: check 'go generate' is clean
+        run: |
+          mkdir gentools
+          go build -o gentools/stringer golang.org/x/tools/cmd/stringer
+          PATH="$PATH:$(pwd)/gentools" go generate ./...
+          echo
+          echo
+          git diff --name-only --exit-code || (echo "The files above need updating. Please run 'go generate'."; exit 1)