ci: setup unit tests, linting

.github/workflows/ci.yaml

@@ -0,0 +1,60 @@
+name: ci
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Set up Go
+        uses: actions/setup-go@v5
+        with:
+          go-version-file: go.mod
+
+      - name: Run golangci-lint
+        uses: golangci/golangci-lint-action@v6
+        with:
+          version: v1.59.1 # renovate: datasource=github-releases depName=golangci/golangci-lint
+          args: --timeout 5m
+
+
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Set up Go
+        uses: actions/setup-go@v5
+        with:
+          go-version-file: go.mod
+
+      - name: Run tests
+        run: go test -v -race -coverpkg=./...  ./...
+
+
+  go-mod-tidy:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Set up Go
+        uses: actions/setup-go@v5
+        with:
+          go-version-file: go.mod
+
+      - name: Run go mod tidy
+        run: go mod tidy
+
+      - name: Check uncommitted changes
+        run: git diff --exit-code
+
+      - if: failure()
+        run: echo "::error::Check failed, please run 'go mod tidy' and commit the changes."

cmd/rp/cmd/run.go

@@ -200,6 +200,9 @@ func reconcileReleasePR(ctx context.Context, forge rp.Forge, changesets []rp.Cha
 		}
 
 		localCommit, err := repo.CommitObject(releaseCommitHash)
+		if err != nil {
+			return err
+		}
 
 		diff, err := localCommit.PatchContext(ctx, remoteCommit)
 		if err != nil {

commits_test.go

@@ -8,9 +8,6 @@ import (
 )
 
 func TestAnalyzeCommits(t *testing.T) {
-	type args struct {
-		commits []Commit
-	}
 	tests := []struct {
 		name            string
 		commits         []Commit