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151becec2b
* Improve startup time with lazy loading some args * add some tests * Add changelog entry * Update CHANGELOG.md Co-authored-by: Jakub Roztocil <jakub@roztocil.co>
87 lines
2.2 KiB
Python
87 lines
2.2 KiB
Python
import pytest
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from argparse import ArgumentParser
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from unittest.mock import Mock
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from httpie.cli.utils import LazyChoices
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def test_lazy_choices():
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mock = Mock()
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getter = mock.getter
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getter.return_value = ['a', 'b', 'c']
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parser = ArgumentParser()
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parser.register('action', 'lazy_choices', LazyChoices)
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parser.add_argument(
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'--option',
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help="the regular option",
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default='a',
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metavar='SYMBOL',
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choices=['a', 'b'],
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)
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parser.add_argument(
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'--lazy-option',
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help="the lazy option",
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default='a',
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metavar='SYMBOL',
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action='lazy_choices',
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getter=getter,
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cache=False # for test purposes
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)
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# Parser initalization doesn't call it.
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getter.assert_not_called()
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# If we don't use --lazy-option, we don't retrieve it.
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parser.parse_args([])
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getter.assert_not_called()
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parser.parse_args(['--option', 'b'])
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getter.assert_not_called()
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# If we pass a value, it will retrieve to verify.
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parser.parse_args(['--lazy-option', 'c'])
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getter.assert_called()
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getter.reset_mock()
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with pytest.raises(SystemExit):
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parser.parse_args(['--lazy-option', 'z'])
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getter.assert_called()
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getter.reset_mock()
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def test_lazy_choices_help():
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mock = Mock()
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getter = mock.getter
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getter.return_value = ['a', 'b', 'c']
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help_formatter = mock.help_formatter
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help_formatter.return_value = '<my help>'
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parser = ArgumentParser()
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parser.register('action', 'lazy_choices', LazyChoices)
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parser.add_argument(
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'--lazy-option',
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default='a',
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metavar='SYMBOL',
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action='lazy_choices',
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getter=getter,
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help_formatter=help_formatter,
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cache=False # for test purposes
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)
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# Parser initalization doesn't call it.
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getter.assert_not_called()
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# If we don't use `--help`, we don't use it.
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parser.parse_args([])
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getter.assert_not_called()
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help_formatter.assert_not_called()
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parser.parse_args(['--lazy-option', 'b'])
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help_formatter.assert_not_called()
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# If we use --help, then we call it with styles
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with pytest.raises(SystemExit):
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parser.parse_args(['--help'])
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help_formatter.assert_called_once_with(['a', 'b', 'c'])
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