diff --git a/.github/workflows/doxygen.yml b/.github/workflows/doxygen.yml
new file mode 100644
index 0000000..854d3a2
--- /dev/null
+++ b/.github/workflows/doxygen.yml
@@ -0,0 +1,29 @@
+name: 🚀Doxygen
+
+on:
+  pull_request:
+    types:
+      - opened
+
+jobs:
+  run:
+    name: 🚀 Doxygen
+    runs-on: ubuntu-latest
+    steps:
+      - name: 📥 Checkout
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+
+      - name: Install Deps
+        run: |
+          sudo apt install -y doxygen
+      - name: Generate Doxygen
+        shell: bash
+        run: |
+          doxygen Doxyfile
+      - name: Upload
+        uses: actions/upload-artifact@v2
+        with:
+          name: doxygen
+          path: html
diff --git a/.github/workflows/run.yml b/.github/workflows/run.yml
index cb4c50e..6c8a88f 100644
--- a/.github/workflows/run.yml
+++ b/.github/workflows/run.yml
@@ -1,7 +1,9 @@
 name: 🚀 Run
 
 on:
-  workflow_dispatch:
+  pull_request:
+    types:
+      - opened
 
 jobs:
   run:
@@ -16,4 +18,4 @@ jobs:
       - name: 🚀 Run
         shell: bash
         run: |
-          python3 main.py
+          python3 -m unittest test_tree.py
diff --git a/test_tree.py b/test_tree.py
new file mode 100644
index 0000000..db869bc
--- /dev/null
+++ b/test_tree.py
@@ -0,0 +1,23 @@
+import unittest
+from node import Node
+from tree import Tree
+
+class TestTree(unittest.TestCase):
+    def test_find_data_in_tree(self):
+        tree = Tree()
+        tree.add(5)
+        tree.add(3)
+        tree.add(7)
+        node = tree.find(3)
+        self.assertEqual(node.data, 3)
+
+    def test_find_data_not_in_tree(self):
+        tree = Tree()
+        tree.add(5)
+        tree.add(3)
+        tree.add(7)
+        node = tree.find(10)
+        self.assertIsNone(node)
+
+if __name__ == '__main__':
+    unittest.main()