diff --git a/.github/workflows/test.yml-template b/.github/workflows/test.yml-template
new file mode 100644
index 00000000..44ac4e96
--- /dev/null
+++ b/.github/workflows/test.yml-template
@@ -0,0 +1,29 @@
+name: Test
+
+on:
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node-version: [20.x]
+
+    steps:
+      - uses: actions/checkout@v2
+      - name: Use Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v1
+        with:
+          node-version: ${{ matrix.node-version }}
+      - run: npm install
+      - run: npm start & sleep 5 && npm test
+      - name: Upload tests report(cypress mochaawesome merged HTML report)
+        if: ${{ always() }}
+        uses: actions/upload-artifact@v2
+        with:
+          name: report
+          path: reports
diff --git a/src/scripts/main.js b/src/scripts/main.js
index 2cdcd10c..eeaf93a8 100644
--- a/src/scripts/main.js
+++ b/src/scripts/main.js
@@ -18,10 +18,32 @@ const food = {
   },
 };
 
-const tree = document.querySelector('#tree');
-
 function createTree(element, data) {
-  // WRITE YOUR CODE HERE
+  if (!element || !data || Object.keys(data).length === 0) {
+    return;
+  }
+
+  const ul = document.createElement('ul');
+
+  for (const key in data) {
+    const li = document.createElement('li');
+
+    li.textContent = key;
+
+    createTree(li, data[key]);
+
+    ul.append(li);
+  }
+
+  element.append(ul);
+}
+
+let tree = document.querySelector('#tree');
+
+if (!tree) {
+  tree = document.createElement('div');
+  tree.id = 'tree';
+  document.body.append(tree);
 }
 
 createTree(tree, food);