diff --git a/scripts/tests/test_validate_format.py b/scripts/tests/test_validate_format.py
index 824e426f..4d32c80c 100644
--- a/scripts/tests/test_validate_format.py
+++ b/scripts/tests/test_validate_format.py
@@ -4,6 +4,7 @@ from email import message
 import unittest
 
 from validate.format import error_message
+from validate.format import get_categories_content
 
 
 class TestValidadeFormat(unittest.TestCase):
@@ -30,3 +31,32 @@ class TestValidadeFormat(unittest.TestCase):
         self.assertEqual(err_msg_ten, '(L011) This is a unit test')
         self.assertEqual(err_msg_hundred, '(L101) This is a unit test')
         self.assertEqual(err_msg_thousand, '(L1001) This is a unit test')
+
+    def test_if_get_categories_content_return_correct_data_of_categories(self):
+        fake_contents = [
+            '### A',
+            'API | Description | Auth | HTTPS | CORS |',
+            '|---|---|---|---|---|',
+            '| [AA](https://www.ex.com) | Desc | `apiKey` | Yes | Yes |',
+            '| [AB](https://www.ex.com) | Desc | `apiKey` | Yes | Yes |',
+            '',
+            '### B',
+            'API | Description | Auth | HTTPS | CORS |',
+            '|---|---|---|---|---|',
+            '| [BA](https://www.ex.com) | Desc | `apiKey` | Yes | Yes |',
+            '| [BB](https://www.ex.com) | Desc | `apiKey` | Yes | Yes |'
+        ]
+
+        result = get_categories_content(fake_contents)
+        self.assertIsInstance(result, tuple)
+
+        categories, category_line_num = result
+        self.assertIsInstance(categories, dict)
+        self.assertIsInstance(category_line_num, dict)
+        
+        expected_result = ({'A': ['AA', 'AB'], 'B': ['BA', 'BB']}, {'A': 0, 'B': 6})
+
+        for res, ex_res in zip(result, expected_result):
+
+            with self.subTest():
+                self.assertEqual(res, ex_res)