TC-106 add contracts coverage

.gitignore

@@ -5,3 +5,6 @@ cache
 artifacts
 src/types
 .vscode
+coverage
+coverage.json
+

.prettierignore

@@ -5,4 +5,6 @@ artifacts-ovm
 cache
 cache-ovm
 contracts/Verifier*.sol
-src/types
+src/types
+coverage
+coverage.json

README.md

@@ -19,6 +19,7 @@ yarn
 yarn download
 yarn build
 yarn test
+yarn coverage
 ```
 
 ## Deploy

hardhat.config.js

@@ -3,6 +3,7 @@ require('@typechain/hardhat')
 require('@nomiclabs/hardhat-ethers')
 require('@nomiclabs/hardhat-waffle')
 require('@nomiclabs/hardhat-etherscan')
+require('solidity-coverage')
 require('dotenv').config()
 
 task('hasher', 'Compile Poseidon hasher', () => {

package.json

@@ -15,6 +15,7 @@
     "build": "npm run circuit && npm run compile",
     "deploy": "npx hardhat run scripts/deploy.js --network optimism",
     "test": "npx hardhat test",
+    "coverage": "npx hardhat coverage",
     "eslint": "eslint --ext .js --ignore-path .gitignore .",
     "prettier:check": "prettier --check . --config .prettierrc",
     "prettier:fix": "prettier --write . --config .prettierrc",
@@ -58,6 +59,7 @@
     "eslint-plugin-prettier": "^3.4.0",
     "prettier": "^2.3.1",
     "prettier-plugin-solidity": "^1.0.0-beta.13",
-    "solhint-plugin-prettier": "^0.0.5"
+    "solhint-plugin-prettier": "^0.0.5",
+    "solidity-coverage": "^0.7.21"
   }
 }