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82 lines
3.1 KiB
Python
82 lines
3.1 KiB
Python
'''Test warnings replacement in PyShell.py and run.py.
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This file could be expanded to include traceback overrides
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(in same two modules). If so, change name.
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Revise if output destination changes (http://bugs.python.org/issue18318).
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Make sure warnings module is left unaltered (http://bugs.python.org/issue18081).
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'''
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import unittest
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from test.support import captured_stderr
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import warnings
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# Try to capture default showwarning before Idle modules are imported.
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showwarning = warnings.showwarning
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# But if we run this file within idle, we are in the middle of the run.main loop
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# and default showwarnings has already been replaced.
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running_in_idle = 'idle' in showwarning.__name__
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from idlelib import run
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from idlelib import PyShell as shell
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# The following was generated from PyShell.idle_formatwarning
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# and checked as matching expectation.
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idlemsg = '''
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Warning (from warnings module):
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File "test_warning.py", line 99
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Line of code
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UserWarning: Test
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'''
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shellmsg = idlemsg + ">>> "
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class RunWarnTest(unittest.TestCase):
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@unittest.skipIf(running_in_idle, "Does not work when run within Idle.")
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def test_showwarnings(self):
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self.assertIs(warnings.showwarning, showwarning)
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run.capture_warnings(True)
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self.assertIs(warnings.showwarning, run.idle_showwarning_subproc)
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run.capture_warnings(False)
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self.assertIs(warnings.showwarning, showwarning)
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def test_run_show(self):
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with captured_stderr() as f:
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run.idle_showwarning_subproc(
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'Test', UserWarning, 'test_warning.py', 99, f, 'Line of code')
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# The following uses .splitlines to erase line-ending differences
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self.assertEqual(idlemsg.splitlines(), f.getvalue().splitlines())
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class ShellWarnTest(unittest.TestCase):
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@unittest.skipIf(running_in_idle, "Does not work when run within Idle.")
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def test_showwarnings(self):
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self.assertIs(warnings.showwarning, showwarning)
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shell.capture_warnings(True)
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self.assertIs(warnings.showwarning, shell.idle_showwarning)
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shell.capture_warnings(False)
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self.assertIs(warnings.showwarning, showwarning)
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def test_idle_formatter(self):
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# Will fail if format changed without regenerating idlemsg
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s = shell.idle_formatwarning(
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'Test', UserWarning, 'test_warning.py', 99, 'Line of code')
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self.assertEqual(idlemsg, s)
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def test_shell_show(self):
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with captured_stderr() as f:
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shell.idle_showwarning(
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'Test', UserWarning, 'test_warning.py', 99, f, 'Line of code')
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self.assertEqual(shellmsg.splitlines(), f.getvalue().splitlines())
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class ImportWarnTest(unittest.TestCase):
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def test_idlever(self):
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with warnings.catch_warnings(record=True) as w:
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warnings.simplefilter("always")
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import idlelib.idlever
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self.assertEqual(len(w), 1)
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self.assertTrue(issubclass(w[-1].category, DeprecationWarning))
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self.assertIn("version", str(w[-1].message))
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if __name__ == '__main__':
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unittest.main(verbosity=2, exit=False)
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