ci: error when cargo test makes git status dirty (#29429)

.github/workflows/ci.generate.ts

@@ -998,6 +998,22 @@ const ci = {
           ].join("\n"),
           run: "cargo test --release --locked --features=panic-trace",
         },
+        {
+          name: "Ensure no git changes",
+          if: "matrix.job == 'test'",
+          run: [
+            'if [[ -n "$(git status --porcelain)" ]]; then',
+            'echo "🧾 Diff:"',
+            "git diff",
+            'echo "❌ Git working directory is dirty. Ensure `cargo test` is not modifying git tracked files."',
+            'echo ""',
+            'echo "📋 Status:"',
+            "git status",
+            'echo ""',
+            "exit 1",
+            "fi",
+          ].join("\n"),
+        },
         {
           name: "Configure hosts file for WPT",
           if: "matrix.wpt",

.github/workflows/ci.yml

@@ -614,6 +614,9 @@ jobs:
           github.repository == 'denoland/deno' &&
           !startsWith(github.ref, 'refs/tags/'))))
         run: cargo test --release --locked --features=panic-trace
+      - name: Ensure no git changes
+        if: '!(matrix.skip) && (matrix.job == ''test'')'
+        run: "if [[ -n \"$(git status --porcelain)\" ]]; then\necho \"\U0001F9FE Diff:\"\ngit diff\necho \"❌ Git working directory is dirty. Ensure `cargo test` is not modifying git tracked files.\"\necho \"\"\necho \"\U0001F4CB Status:\"\ngit status\necho \"\"\nexit 1\nfi"
       - name: Configure hosts file for WPT
         if: '!(matrix.skip) && (matrix.wpt)'
         run: ./wpt make-hosts-file | sudo tee -a /etc/hosts

.gitignore

@@ -1,6 +1,7 @@
 *.orig
 *.pyc
 *.swp
+*.symcache
 .env
 
 /.cargo_home/