chore: add test workflow

Author: remiroyc

.github/workflows/test.yml

@@ -0,0 +1,38 @@
+name: Tests
+
+on:
+  push:
+    branches: [main, dev]
+  pull_request:
+    branches: [main, dev]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v2
+
+    - name: Set up Node.js
+      uses: actions/setup-node@v2
+      with:
+        node-version: '14.x'
+
+    - name: Install dependencies
+      run: npm install
+
+    - name: Install Hardhat
+      run: npm install hardhat
+
+    - name: Compile contracts
+      run: npx hardhat compile
+
+    - name: Run tests
+      run: npx hardhat test
+
+    - name: Upload test results
+      uses: actions/upload-artifact@v2
+      with:
+        name: test-results
+        path: test-results.xml