Add coverage

Author: ernestognw

.github/workflows/checks.yml

@@ -38,6 +38,15 @@ jobs:
       - name: Run tests and generate gas report
         run: npm run test
 
+  coverage:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Set up environment
+        uses: ./.github/actions/setup
+      - name: Run coverage
+        run: npm run coverage
+
   tests-foundry:
     runs-on: ubuntu-latest
     steps:

.solcover.js

@@ -0,0 +1,4 @@
+module.exports = {
+  skipFiles: ['mocks'],
+  istanbulReporter: ['html', 'lcov', 'text-summary'],
+};

hardhat.config.js

@@ -14,6 +14,7 @@ const { argv } = require('yargs/yargs')()
 require('@nomicfoundation/hardhat-chai-matchers');
 require('@nomicfoundation/hardhat-ethers');
 require('hardhat-exposed');
+require('solidity-coverage')
 require('./hardhat/remappings');
 
 module.exports = {

package.json

@@ -13,6 +13,7 @@
     "compile": "hardhat compile",
     "lint": "prettier --log-level warn --ignore-path .gitignore '{contracts,test}/**/*.sol' --check",
     "lint:fix": "prettier --log-level warn --ignore-path .gitignore '{contracts,test}/**/*.sol' --write",
+    "coverage": "hardhat coverage",
     "test": "hardhat test"
   },
   "homepage": "https://openzeppelin.com/contracts/",

test/utils/Masks.test.js

@@ -44,6 +44,16 @@ describe('Masks', function () {
     }
   });
 
+  describe('get', function () {
+    it('returns group for empty mask', async function () {
+      expect(await this.mock.$get(ethers.toBeHex(0, 32), 0)).to.be.false;
+    });
+
+    it('returns group for non-empty mask', async function () {
+      expect(await this.mock.$get(ethers.toBeHex(1, 32), 0)).to.be.true;
+    });
+  });
+
   describe('isEmpty', function () {
     it('returns true for empty mask', async function () {
       expect(await this.mock.$isEmpty(ethers.toBeHex(0, 32))).to.be.true;