feat: add code coverage reporting via Codecov for backend and contracts

Author: binayyub4211

.github/workflows/ci.yml

@@ -93,12 +93,20 @@ jobs:
       - name: Run Backend Tests
         run: |
           ls -la src/generated/prisma
-          npx vitest run --reporter=basic
+          npx vitest run --coverage
         working-directory: backend
         env:
           DATABASE_URL: postgresql://postgres:password@127.0.0.1:5432/flowfi_test
           NODE_ENV: test
 
+      - name: Upload coverage to Codecov
+        uses: codecov/codecov-action@v4
+        with:
+          files: ./backend/coverage/lcov.info
+          flags: backend
+          token: ${{ secrets.CODECOV_TOKEN }}
+          fail_ci_if_error: true
+
   contracts:
     name: Soroban Contracts CI
     runs-on: ubuntu-latest
@@ -125,6 +133,21 @@ jobs:
         run: cargo test
         working-directory: contracts
 
+      - name: Install cargo-tarpaulin
+        uses: taiki-e/install-action@cargo-tarpaulin
+
+      - name: Run Contract Coverage
+        run: cargo tarpaulin --out Xml --fail-under 70 --output-dir .
+        working-directory: contracts
+
+      - name: Upload coverage to Codecov
+        uses: codecov/codecov-action@v4
+        with:
+          files: ./contracts/tarpaulin-report.xml
+          flags: contracts
+          token: ${{ secrets.CODECOV_TOKEN }}
+          fail_ci_if_error: true
+
       - name: Install Stellar CLI
         run: |
           curl -fsSL https://github.com/stellar/stellar-cli/raw/main/install.sh | sh -s -- --install-deps

README.md

@@ -1,5 +1,7 @@
 # FlowFi
 
+[![codecov](https://codecov.io/gh/LabsCrypt/flowfi/branch/main/graph/badge.svg?token=)](https://codecov.io/gh/LabsCrypt/flowfi)
+
 **DeFi Payment Streaming on Stellar**
 
 _Programmable, real-time payment streams and recurring subscriptions._

backend/package.json

@@ -51,6 +51,7 @@
     "ts-node": "^10.9.2",
     "tsx": "^4.19.2",
     "typescript": "^5.9.3",
-    "vitest": "^2.1.8"
+    "vitest": "^2.1.8",
+    "@vitest/coverage-v8": "^2.1.8"
   }
 }

backend/vitest.config.ts

@@ -7,7 +7,13 @@ export default defineConfig({
         setupFiles: [],
         include: ['tests/**/*.{test,spec}.ts'],
         coverage: {
-            reporter: ['text', 'json', 'html'],
+            reporter: ['text', 'json', 'html', 'lcov'],
+            thresholds: {
+                lines: 60,
+                functions: 60,
+                branches: 60,
+                statements: 60,
+            }
         },
         testTimeout: 30000,
         hookTimeout: 30000,

codecov.yml

@@ -0,0 +1,15 @@
+coverage:
+  status:
+    project:
+      default:
+        target: auto
+        threshold: 1%
+    patch:
+      default:
+        target: auto
+        threshold: 0%
+
+comment:
+  layout: "reach, diff, flags, files"
+  behavior: default
+  require_changes: false