add coverage to CI

.github/workflows/build.yml

@@ -23,6 +23,11 @@ jobs:
       - run: yarn test
       - run: node src/cli.js test
       - run: yarn lint
+      - run: yarn coverage
+      - name: Coveralls
+        uses: coverallsapp/github-action@master
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
       - name: Telegram Failure Notification
         uses: appleboy/telegram-action@0.0.7
         if: failure()

README.md

@@ -1,4 +1,4 @@
-# Tornado Cash Privacy Solution [![build status](https://github.com/tornadocash/tornado-core/actions/workflows/build.yml/badge.svg)](https://github.com/tornadocash/tornado-core/actions/workflows/build.yml)
+# Tornado Cash Privacy Solution [![build status](https://github.com/tornadocash/tornado-core/actions/workflows/build.yml/badge.svg)](https://github.com/tornadocash/tornado-core/actions/workflows/build.yml) [![Coverage Status](https://coveralls.io/repos/github/tornadocash/tornado-core/badge.svg?branch=master)](https://coveralls.io/github/tornadocash/tornado-core?branch=master)
 
 Tornado Cash is a non-custodial Ethereum and ERC20 privacy solution based on zkSNARKs. It improves transaction privacy by breaking the on-chain link between the recipient and destination addresses. It uses a smart contract that accepts ETH deposits that can be withdrawn by a different address. Whenever ETH is withdrawn by the new address, there is no way to link the withdrawal to the deposit, ensuring complete privacy.