diff --git a/tests/test_jc_lib.py b/tests/test_jc_lib.py
index 609f1c3c..6b3ea2f0 100644
--- a/tests/test_jc_lib.py
+++ b/tests/test_jc_lib.py
@@ -1,3 +1,4 @@
+from copy import deepcopy
 import unittest
 from typing import Generator
 import jc.lib
@@ -74,5 +75,66 @@ class MyTests(unittest.TestCase):
     def test_lib_modname_to_cliname(self):
         self.assertEqual(jc.lib._modname_to_cliname('module_name'), 'module-name')
 
+    def test_lib_all_parser_info_show_deprecated(self):
+        # save old state
+        old_parsers = deepcopy(jc.lib.parsers)
+        old_get_parser = deepcopy(jc.lib._get_parser)
+
+        # mock data
+        class mock_parser_info:
+            name = "deprecated"
+            argument = "--deprecated"
+            version = "1.1"
+            description = "`deprecated` command parser"
+            author = "nobody"
+            author_email = "nobody@gmail.com"
+            compatible = ["linux", "darwin"]
+            magic_commands = ["deprecated"]
+            deprecated = True
+
+        class mock_parser:
+            info = mock_parser_info
+
+        jc.lib.parsers = ['deprecated']
+        jc.lib._get_parser = lambda x: mock_parser
+        result = jc.lib.all_parser_info(show_deprecated=True)
+
+        # reset
+        jc.lib.parsers = old_parsers
+        jc.lib._get_parser = old_get_parser
+
+        self.assertEqual(len(result), 1)
+
+    def test_lib_all_parser_info_show_hidden(self):
+        # save old state
+        old_parsers = deepcopy(jc.lib.parsers)
+        old_get_parser = deepcopy(jc.lib._get_parser)
+
+        # mock data
+        class mock_parser_info:
+            name = "deprecated"
+            argument = "--deprecated"
+            version = "1.1"
+            description = "`deprecated` command parser"
+            author = "nobody"
+            author_email = "nobody@gmail.com"
+            compatible = ["linux", "darwin"]
+            magic_commands = ["deprecated"]
+            hidden = True
+
+        class mock_parser:
+            info = mock_parser_info
+
+        jc.lib.parsers = ['deprecated']
+        jc.lib._get_parser = lambda x: mock_parser
+        result = jc.lib.all_parser_info(show_hidden=True)
+
+        # reset
+        jc.lib.parsers = old_parsers
+        jc.lib._get_parser = old_get_parser
+
+        self.assertEqual(len(result), 1)
+
+
 if __name__ == '__main__':
     unittest.main()
\ No newline at end of file