diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
new file mode 100644
index 00000000..cc95d0d5
--- /dev/null
+++ b/.github/workflows/tests.yml
@@ -0,0 +1,21 @@
+name: Unit Tests
+
+on:
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+      
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.x'
+          
+      - name: Run tests
+        run: python -m unittest discover
\ No newline at end of file
diff --git a/laboratories/cicd-documentation/gigel.md b/laboratories/cicd-documentation/gigel.md
new file mode 100644
index 00000000..41dc3560
--- /dev/null
+++ b/laboratories/cicd-documentation/gigel.md
@@ -0,0 +1 @@
+# HI
\ No newline at end of file
diff --git a/laboratories/cicd-documentation/tree.py b/laboratories/cicd-documentation/tree.py
index 2639fcd1..e399b7bc 100644
--- a/laboratories/cicd-documentation/tree.py
+++ b/laboratories/cicd-documentation/tree.py
@@ -1,5 +1,5 @@
 from node import Node
-
+import unittest
 
 class Tree:
     """ Tree class for binary tree """
@@ -76,10 +76,33 @@ def _printInorderTree(self, node):
 
     def _printPreorderTree(self, node):
         # TODO
-        pass
+        if node is not None:
+            print(str(node.data) + ' ')
+            self._printPreorderTree(node.left)
+            self._printPostorderTree(node.right)
 
     def _printPostorderTree(self, node):
         # TODO
-        pass
+        if node is not None:
+            self._printPreorderTree(node.left)
+            self._printPostorderTree(node.right)
+            print(str(node.data) + ' ')
+
+
+class TestTreeFind(unittest.TestCase):
+    def setUp(self):
+        self.tree = Tree()
+        values = [50, 30, 70, 20, 40]
+        for v in values:
+            self.tree.add(v)
+
+    def test_find_non_existing_element(self):
+        result = self.tree.find(100)
+        self.assertIsNone(result, "Should be none")
 
+    def test_find_root(self):
+        result = self.tree.find(50)
+        self.assertEqual(result, self.tree.getRoot(), "Root was not found.")
 
+if __name__ == '__main__':
+    unittest.main()