Fix test_lazy_choices_help failure on Python 3.14+

httpie/cli/argparser.py

@@ -76,9 +76,23 @@ def add_usage(self, usage, actions, groups, prefix=None):
         )
 
 
+class HelpNotCheckingArgumentParser(argparse.ArgumentParser):
+    """
+    This is ArgumentParser which does not check the help when adding arguments.
+    Effectively, it reverts the behavior added to Python 3.14
+    in https://github.com/python/cpython/pull/124899
+
+    It needs to be used to make LazyChoices actually lazy.
+
+    Using this fixes https://github.com/httpie/cli/issues/1641
+    """
+    def _check_help(self, *args, **kwargs):
+        pass
+
+
 # TODO: refactor and design type-annotated data structures
 #       for raw args + parsed args and keep things immutable.
-class BaseHTTPieArgumentParser(argparse.ArgumentParser):
+class BaseHTTPieArgumentParser(HelpNotCheckingArgumentParser):
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
         self.env = None

tests/test_cli_utils.py

@@ -1,6 +1,6 @@
 import pytest
-from argparse import ArgumentParser
 from unittest.mock import Mock
+from httpie.cli.argparser import HelpNotCheckingArgumentParser
 from httpie.cli.utils import LazyChoices
 
 
@@ -9,7 +9,10 @@ def test_lazy_choices():
     getter = mock.getter
     getter.return_value = ['a', 'b', 'c']
 
-    parser = ArgumentParser()
+    # On Python 3.14+ LazyChoices only works properly
+    # with our custom ArgumentParser.
+    # In httpie code base, all our argument parsers inherit from this class.
+    parser = HelpNotCheckingArgumentParser()
     parser.register('action', 'lazy_choices', LazyChoices)
     parser.add_argument(
         '--option',
@@ -57,7 +60,7 @@ def test_lazy_choices_help():
     help_formatter = mock.help_formatter
     help_formatter.return_value = '<my help>'
 
-    parser = ArgumentParser()
+    parser = HelpNotCheckingArgumentParser()
     parser.register('action', 'lazy_choices', LazyChoices)
     parser.add_argument(
         '--lazy-option',