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100 lines
3.3 KiB
Python
100 lines
3.3 KiB
Python
"""Unit tests for the variables checker."""
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import sys
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import os
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import unittest
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from astroid import test_utils
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from pylint.checkers import variables
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from pylint.testutils import CheckerTestCase, linter, set_config, Message
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class VariablesCheckerTC(CheckerTestCase):
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CHECKER_CLASS = variables.VariablesChecker
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def test_bitbucket_issue_78(self):
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""" Issue 78 report a false positive for unused-module """
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module = test_utils.build_module("""
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from sys import path
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path += ['stuff']
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def func():
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other = 1
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return len(other)
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""")
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with self.assertNoMessages():
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self.walk(module)
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@set_config(ignored_modules=('argparse',))
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def test_no_name_in_module_skipped(self):
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"""Make sure that 'from ... import ...' does not emit a
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'no-name-in-module' with a module that is configured
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to be ignored.
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"""
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node = test_utils.extract_node("""
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from argparse import THIS_does_not_EXIST
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""")
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with self.assertNoMessages():
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self.checker.visit_from(node)
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@set_config(callbacks=('callback_', '_callback'))
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def test_custom_callback_string(self):
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""" Test the --calbacks option works. """
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def cleanup():
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self.checker._to_consume = _to_consume
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_to_consume = self.checker._to_consume
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self.checker._to_consume = []
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self.addCleanup(cleanup)
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node = test_utils.extract_node("""
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def callback_one(abc):
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''' should not emit unused-argument. '''
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""")
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with self.assertNoMessages():
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self.checker.visit_function(node)
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self.checker.leave_function(node)
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node = test_utils.extract_node("""
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def two_callback(abc, defg):
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''' should not emit unused-argument. '''
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""")
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with self.assertNoMessages():
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self.checker.visit_function(node)
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self.checker.leave_function(node)
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node = test_utils.extract_node("""
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def normal_func(abc):
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''' should emit unused-argument. '''
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""")
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with self.assertAddsMessages(
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Message('unused-argument', node=node['abc'], args='abc')):
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self.checker.visit_function(node)
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self.checker.leave_function(node)
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node = test_utils.extract_node("""
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def cb_func(abc):
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''' Previous callbacks are overriden. '''
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""")
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with self.assertAddsMessages(
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Message('unused-argument', node=node['abc'], args='abc')):
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self.checker.visit_function(node)
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self.checker.leave_function(node)
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class MissingSubmoduleTest(CheckerTestCase):
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CHECKER_CLASS = variables.VariablesChecker
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def test_package_all(self):
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regr_data = os.path.join(os.path.dirname(os.path.abspath(__file__)),
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'regrtest_data')
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sys.path.insert(0, regr_data)
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try:
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linter.check(os.path.join(regr_data, 'package_all'))
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got = linter.reporter.finalize().strip()
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self.assertEqual(got, "E: 3: Undefined variable name "
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"'missing' in __all__")
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finally:
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sys.path.pop(0)
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if __name__ == '__main__':
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unittest.main()
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