adding test for getNosec

tests/unit/core/test_get_nosec.py

@@ -0,0 +1,48 @@
+import unittest
+from bandit.core.utils import get_nosec
+
+class TestGetNosec(unittest.TestCase):
+    def test_nested_dict_nosec(self):
+        # Mock the nosec lines and context with nested dictionary annotations
+        nosec_lines = {
+            5: "# nosec B101",
+            10: {
+                15: "# nosec B303"
+            }
+        }
+        context = {
+            "lineno": 10,
+            "linerange": [15]
+        }
+
+        # Mock the expected result
+        expected_result = {15: "# nosec B303"}
+        print(expected_result)
+
+        # Call the function and check the result
+        result = get_nosec(nosec_lines, context)
+        self.assertEqual(result, expected_result)
+
+    def test_higher_nosec_ignored(self):
+        # Mock the nosec lines and context with a higher level nosec annotation
+        nosec_lines = {
+            5: "# nosec B101",
+            10: "# nosec B303"
+        }
+        # Mock the context with a nested dictionary annotation
+        context = {
+            "lineno": 10,
+            "linerange": [15]
+        }
+
+        # Mock the expected result
+        expected_result = "# nosec B303"
+        print(expected_result)
+
+        # Call the function and check the result
+        result = get_nosec(nosec_lines, context)
+        self.assertEqual(result, expected_result)
+
+
+if __name__ == '__main__':
+    unittest.main()