Add Cadence linter

.github/workflows/cadence_tests.yml

@@ -28,15 +28,17 @@ jobs:
           restore-keys: |
             ${{ runner.os }}-go-
       - name: Install Flow CLI
-        run: sh -ci "$(curl -fsSL https://raw.githubusercontent.com/onflow/flow-cli/master/install.sh)"
-      - name: Flow CLI Version
-        run: flow version
-      - name: Update PATH
-        run: echo "/root/.local/bin" >> $GITHUB_PATH
+        run: sh -ci "$(curl -fsSL https://raw.githubusercontent.com/onflow/flow-cli/master/install.sh)" -- v2.15.3
+      - name: Update PATH and show Flow version
+        run: |
+          echo "/root/.local/bin" >> $GITHUB_PATH
+          echo "$HOME/.local/bin" >> $GITHUB_PATH
+          which flow || true
+          flow version
       - name: Install dependencies
         run: flow deps install --skip-alias --skip-deployments
       - name: Run tests
-        run: flow test --cover --covercode="contracts" --coverprofile="coverage.lcov" ./cadence/tests/*_test.cdc
+        run: make ci
       - name: Upload coverage reports to Codecov
         uses: codecov/codecov-action@v3
         env:

Makefile

@@ -0,0 +1,10 @@
+.PHONY: test
+test:
+	flow test --cover --covercode="contracts" --coverprofile="coverage.lcov" ./cadence/tests/*_test.cdc
+
+.PHONY: lint
+lint:
+	find cadence -name "*.cdc" | xargs flow cadence lint --warnings-as-errors
+
+.PHONY: ci
+ci: lint test