add more tests.

tests/unit/deep_get_by_type_test.py

@@ -0,0 +1,45 @@
+import unittest
+
+from deepgetter.deep_get import deep_get
+
+
+class TestGetByType(unittest.TestCase):
+    def test_with_basic_number(self):
+        """
+        Test basic number
+        """
+        data: int = 39
+        result = deep_get(data, '')
+        self.assertEqual(result, 39)
+
+    def test_with_number_in_dict(self):
+        """
+        Test basic number inside structure
+        """
+        data: dict = {
+            'value': 39,
+        }
+        result = deep_get(data, 'value')
+        self.assertEqual(result, 39)
+
+    def test_with_basic_str(self):
+        """
+        Test basic string
+        """
+        data: str = 'test str'
+        result = deep_get(data, '')
+        self.assertEqual(result, 'test str')
+
+    def test_with_str_in_dict(self):
+        """
+        Test basic string inside structure
+        """
+        data: dict = {
+            'value': 'test str',
+        }
+        result = deep_get(data, 'value')
+        self.assertEqual(result, 'test str')
+
+
+if __name__ == '__main__':
+    unittest.main()

tests/unit/deep_get_find_test.py → tests/unit/deep_get_find_in_deep_test.py

@@ -3,7 +3,7 @@
 from deepgetter.deep_get import deep_get
 
 
-class TestSum(unittest.TestCase):
+class TestFindInDeep(unittest.TestCase):
     def test_dict_with_0_lvl(self):
         """
         Test basic dictionary with no profundity level.
@@ -26,7 +26,7 @@ def test_dict_with_1_lvl(self):
 
     def test_dict_with_2_lvl(self):
         """
-        Test basic dictionary with two profundity levels.
+        Test basic dictionary with 2 profundity levels.
         """
         data: dict = {
             'value': {
@@ -36,6 +36,20 @@ def test_dict_with_2_lvl(self):
         result = deep_get(data, 'value.subdata')
         self.assertEqual(result, 39)
 
+    def test_dict_with_3_lvl(self):
+        """
+        Test basic dictionary with 3 profundity levels.
+        """
+        data: dict = {
+            'value': {
+                'sub-data': {
+                    'sub-sub-data': 39,
+                },
+            },
+        }
+        result = deep_get(data, 'value.sub-data.sub-sub-data')
+        self.assertEqual(result, 39)
+
 
 if __name__ == '__main__':
     unittest.main()