Feature/unit tests (#184)

.github/workflows/build.yml

@@ -57,3 +57,26 @@ jobs:
       working-directory: ./core
       run: |
         yarn lint
+
+  test:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Setup Node
+      uses: actions/setup-node@v3
+      with:
+        cache: yarn
+        cache-dependency-path: core/yarn.lock
+        node-version: 16
+        
+    - name: Install
+      working-directory: ./core
+      run: |
+        yarn install --frozen-lockfile
+        
+    - name: Test
+      working-directory: ./core
+      run: |
+        yarn test