test: improve test coverage to 90%+

.github/workflows/ci.yml

@@ -26,6 +26,23 @@ jobs:
       - run: npm run build
       - run: npm test
 
+  coverage:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v6
+        with:
+          node-version: 22
+          cache: npm
+      - run: npm ci
+      - run: npx vitest run --coverage
+      - name: Upload coverage to Codecov
+        uses: codecov/codecov-action@v5
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
+          files: ./coverage/coverage-final.json
+          fail_ci_if_error: true
+
   docker:
     runs-on: ubuntu-latest
     steps:

codecov.yml

@@ -0,0 +1,25 @@
+codecov:
+  require_ci_to_pass: true
+coverage:
+  precision: 2
+  round: down
+  range: "70...100"
+  status:
+    project:
+      default:
+        target: 90%
+        threshold: 2%
+    patch:
+      default:
+        target: 90%
+        threshold: 5%
+comment:
+  layout: "reach,diff,flags,files"
+  behavior: default
+  require_changes: true
+  require_base: false
+  require_head: true
+ignore:
+  - "**/test/**"
+  - "**/tests/**"
+  - "**/*.test.ts"