From 0d9fb9a68214d13b20b4d9ad21d6fe3ce28ccc73 Mon Sep 17 00:00:00 2001
From: Leonardo Lima <oleonardolima@users.noreply.github.com>
Date: Tue, 8 Jul 2025 15:02:14 -0300
Subject: [PATCH 1/2] ci: add new cargo-mutants weekly job

- following the rust-bitcoin's weekly job, it adds a new one to
  `bdk_wallet` that runs the `cargo mutants` and open a new issue
reporting the found mutants, if any.
---
 .github/workflows/cron_cargo_mutants.yml | 49 ++++++++++++++++++++++++
 1 file changed, 49 insertions(+)
 create mode 100644 .github/workflows/cron_cargo_mutants.yml

diff --git a/.github/workflows/cron_cargo_mutants.yml b/.github/workflows/cron_cargo_mutants.yml
new file mode 100644
index 00000000..b9da738a
--- /dev/null
+++ b/.github/workflows/cron_cargo_mutants.yml
@@ -0,0 +1,49 @@
+name: Weekly cargo-mutants
+
+permissions: {}
+
+on:
+  schedule:
+    - cron: "0 0 * * 0" # runs weekly on Sunday at 00:00
+  workflow_dispatch: # allows manual triggering
+
+jobs:
+  cargo-mutants:
+    name: Cargo Mutants
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
+      - uses: taiki-e/install-action@2383334cf567d78771fc7d89b6b3802ef1412cf6
+        with:
+          tool: cargo-mutants
+      - run: cargo mutants --in-place --no-shuffle
+      - uses: actions/upload-artifact@v4
+        with:
+          name: mutants.out
+          path: mutants.out
+      - name: Check for new mutants
+        if: always()
+        run: |
+          if [ -s mutants.out/missed.txt ]; then
+            echo "New missed mutants found"
+            MUTANTS_VERSION=$(cargo mutants --version)
+            gh issue create \
+            --title "cargo-mutants: new mutants found" \
+            --body "$(cat <<EOF
+          Displaying up to the first 10 mutants:
+          \`\`\`
+          $(head -n 10 mutants.out/missed.txt)
+          \`\`\`
+          Running cargo mutants version: ${MUTANTS_VERSION}
+          For the complete list, please check the [mutants.out artifact](https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}).
+          EOF
+          )"
+            echo "create_issue=true" >> $GITHUB_ENV
+          else
+            echo "No new mutants found"
+            echo "create_issue=false" >> $GITHUB_ENV
+          fi
+    env:
+      GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

From 5bf19491acaa6ba3fa96039e1ae2c7435d3657b6 Mon Sep 17 00:00:00 2001
From: Leonardo Lima <oleonardolima@users.noreply.github.com>
Date: Tue, 8 Jul 2025 15:32:57 -0300
Subject: [PATCH 2/2] chore(justfile): add `cargo mutants` to justfile

---
 justfile | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/justfile b/justfile
index e7501ea3..58325c00 100644
--- a/justfile
+++ b/justfile
@@ -3,6 +3,7 @@ alias c := check
 alias f := fmt
 alias t := test
 alias p := pre-push
+alias m := mutants
 
 # Build the project
 build:
@@ -26,4 +27,8 @@ test:
    cargo test --workspace --exclude 'example_*' --all-features
 
 # Run pre-push suite: format, check, and test
-pre-push: fmt check test
\ No newline at end of file
+pre-push: fmt check test
+
+# Run `cargo-mutants` for mutation testing
+mutants:
+   cargo mutants --in-place --no-shuffle
\ No newline at end of file