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Edit File : test_warning.py \| Size : 3.06 KB
'''Test warnings replacement in PyShell.py and run.py. This file could be expanded to include traceback overrides (in same two modules). If so, change name. Revise if output destination changes (http://bugs.python.org/issue18318). Make sure warnings module is left unaltered (http://bugs.python.org/issue18081). ''' import unittest from test.support import captured_stderr import warnings # Try to capture default showwarning before Idle modules are imported. showwarning = warnings.showwarning # But if we run this file within idle, we are in the middle of the run.main loop # and default showwarnings has already been replaced. running_in_idle = 'idle' in showwarning.__name__ from idlelib import run from idlelib import PyShell as shell # The following was generated from PyShell.idle_formatwarning # and checked as matching expectation. idlemsg = ''' Warning (from warnings module): File "test_warning.py", line 99 Line of code UserWarning: Test ''' shellmsg = idlemsg + ">>> " class RunWarnTest(unittest.TestCase): @unittest.skipIf(running_in_idle, "Does not work when run within Idle.") def test_showwarnings(self): self.assertIs(warnings.showwarning, showwarning) run.capture_warnings(True) self.assertIs(warnings.showwarning, run.idle_showwarning_subproc) run.capture_warnings(False) self.assertIs(warnings.showwarning, showwarning) def test_run_show(self): with captured_stderr() as f: run.idle_showwarning_subproc( 'Test', UserWarning, 'test_warning.py', 99, f, 'Line of code') # The following uses .splitlines to erase line-ending differences self.assertEqual(idlemsg.splitlines(), f.getvalue().splitlines()) class ShellWarnTest(unittest.TestCase): @unittest.skipIf(running_in_idle, "Does not work when run within Idle.") def test_showwarnings(self): self.assertIs(warnings.showwarning, showwarning) shell.capture_warnings(True) self.assertIs(warnings.showwarning, shell.idle_showwarning) shell.capture_warnings(False) self.assertIs(warnings.showwarning, showwarning) def test_idle_formatter(self): # Will fail if format changed without regenerating idlemsg s = shell.idle_formatwarning( 'Test', UserWarning, 'test_warning.py', 99, 'Line of code') self.assertEqual(idlemsg, s) def test_shell_show(self): with captured_stderr() as f: shell.idle_showwarning( 'Test', UserWarning, 'test_warning.py', 99, f, 'Line of code') self.assertEqual(shellmsg.splitlines(), f.getvalue().splitlines()) class ImportWarnTest(unittest.TestCase): def test_idlever(self): with warnings.catch_warnings(record=True) as w: warnings.simplefilter("always") import idlelib.idlever self.assertEqual(len(w), 1) self.assertTrue(issubclass(w[-1].category, DeprecationWarning)) self.assertIn("version", str(w[-1].message)) if __name__ == '__main__': unittest.main(verbosity=2, exit=False) Back

Edit File : test_warning.py | Size : 3.06 KB

'''Test warnings replacement in PyShell.py and run.py.

This file could be expanded to include traceback overrides
(in same two modules). If so, change name.
Revise if output destination changes (http://bugs.python.org/issue18318).
Make sure warnings module is left unaltered (http://bugs.python.org/issue18081).
'''

import unittest
from test.support import captured_stderr

import warnings
# Try to capture default showwarning before Idle modules are imported.
showwarning = warnings.showwarning
# But if we run this file within idle, we are in the middle of the run.main loop
# and default showwarnings has already been replaced.
running_in_idle = 'idle' in showwarning.__name__

from idlelib import run
from idlelib import PyShell as shell

# The following was generated from PyShell.idle_formatwarning
# and checked as matching expectation.
idlemsg = '''
Warning (from warnings module):
  File "test_warning.py", line 99
    Line of code
UserWarning: Test
'''
shellmsg = idlemsg + ">>> "

class RunWarnTest(unittest.TestCase):

@unittest.skipIf(running_in_idle, "Does not work when run within Idle.")
    def test_showwarnings(self):
        self.assertIs(warnings.showwarning, showwarning)
        run.capture_warnings(True)
        self.assertIs(warnings.showwarning, run.idle_showwarning_subproc)
        run.capture_warnings(False)
        self.assertIs(warnings.showwarning, showwarning)

def test_run_show(self):
        with captured_stderr() as f:
            run.idle_showwarning_subproc(
                    'Test', UserWarning, 'test_warning.py', 99, f, 'Line of code')
            # The following uses .splitlines to erase line-ending differences
            self.assertEqual(idlemsg.splitlines(), f.getvalue().splitlines())

class ShellWarnTest(unittest.TestCase):

@unittest.skipIf(running_in_idle, "Does not work when run within Idle.")
    def test_showwarnings(self):
        self.assertIs(warnings.showwarning, showwarning)
        shell.capture_warnings(True)
        self.assertIs(warnings.showwarning, shell.idle_showwarning)
        shell.capture_warnings(False)
        self.assertIs(warnings.showwarning, showwarning)

def test_idle_formatter(self):
        # Will fail if format changed without regenerating idlemsg
        s = shell.idle_formatwarning(
                'Test', UserWarning, 'test_warning.py', 99, 'Line of code')
        self.assertEqual(idlemsg, s)

def test_shell_show(self):
        with captured_stderr() as f:
            shell.idle_showwarning(
                    'Test', UserWarning, 'test_warning.py', 99, f, 'Line of code')
            self.assertEqual(shellmsg.splitlines(), f.getvalue().splitlines())

class ImportWarnTest(unittest.TestCase):
    def test_idlever(self):
        with warnings.catch_warnings(record=True) as w:
            warnings.simplefilter("always")
            import idlelib.idlever
            self.assertEqual(len(w), 1)
            self.assertTrue(issubclass(w[-1].category, DeprecationWarning))
            self.assertIn("version", str(w[-1].message))

if __name__ == '__main__':
    unittest.main(verbosity=2, exit=False)

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