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e73e7a7abd
Frames of methods in code and codeop modules was show with non-default sys.excepthook. Save correct tracebacks in sys.last_traceback and update __traceback__ attribute of sys.last_value and sys.last_exc.
317 lines
13 KiB
Python
317 lines
13 KiB
Python
"Test InteractiveConsole and InteractiveInterpreter from code module"
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import sys
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import traceback
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import unittest
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from textwrap import dedent
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from contextlib import ExitStack
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from unittest import mock
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from test.support import import_helper
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code = import_helper.import_module('code')
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class MockSys:
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def mock_sys(self):
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"Mock system environment for InteractiveConsole"
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# use exit stack to match patch context managers to addCleanup
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stack = ExitStack()
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self.addCleanup(stack.close)
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self.infunc = stack.enter_context(mock.patch('code.input',
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create=True))
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self.stdout = stack.enter_context(mock.patch('code.sys.stdout'))
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self.stderr = stack.enter_context(mock.patch('code.sys.stderr'))
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prepatch = mock.patch('code.sys', wraps=code.sys, spec=code.sys)
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self.sysmod = stack.enter_context(prepatch)
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if sys.excepthook is sys.__excepthook__:
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self.sysmod.excepthook = self.sysmod.__excepthook__
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del self.sysmod.ps1
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del self.sysmod.ps2
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class TestInteractiveConsole(unittest.TestCase, MockSys):
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maxDiff = None
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def setUp(self):
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self.console = code.InteractiveConsole()
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self.mock_sys()
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def test_ps1(self):
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self.infunc.side_effect = EOFError('Finished')
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self.console.interact()
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self.assertEqual(self.sysmod.ps1, '>>> ')
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self.sysmod.ps1 = 'custom1> '
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self.console.interact()
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self.assertEqual(self.sysmod.ps1, 'custom1> ')
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def test_ps2(self):
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self.infunc.side_effect = EOFError('Finished')
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self.console.interact()
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self.assertEqual(self.sysmod.ps2, '... ')
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self.sysmod.ps1 = 'custom2> '
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self.console.interact()
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self.assertEqual(self.sysmod.ps1, 'custom2> ')
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def test_console_stderr(self):
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self.infunc.side_effect = ["'antioch'", "", EOFError('Finished')]
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self.console.interact()
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for call in list(self.stdout.method_calls):
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if 'antioch' in ''.join(call[1]):
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break
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else:
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raise AssertionError("no console stdout")
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def test_syntax_error(self):
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self.infunc.side_effect = ["def f():",
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" x = ?",
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"",
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EOFError('Finished')]
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self.console.interact()
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output = ''.join(''.join(call[1]) for call in self.stderr.method_calls)
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output = output[output.index('(InteractiveConsole)'):]
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output = output[:output.index('\nnow exiting')]
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self.assertEqual(output.splitlines()[1:], [
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' File "<console>", line 2',
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' x = ?',
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' ^',
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'SyntaxError: invalid syntax'])
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self.assertIs(self.sysmod.last_type, SyntaxError)
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self.assertIs(type(self.sysmod.last_value), SyntaxError)
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self.assertIsNone(self.sysmod.last_traceback)
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self.assertIsNone(self.sysmod.last_value.__traceback__)
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self.assertIs(self.sysmod.last_exc, self.sysmod.last_value)
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def test_indentation_error(self):
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self.infunc.side_effect = [" 1", EOFError('Finished')]
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self.console.interact()
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output = ''.join(''.join(call[1]) for call in self.stderr.method_calls)
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output = output[output.index('(InteractiveConsole)'):]
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output = output[:output.index('\nnow exiting')]
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self.assertEqual(output.splitlines()[1:], [
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' File "<console>", line 1',
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' 1',
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'IndentationError: unexpected indent'])
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self.assertIs(self.sysmod.last_type, IndentationError)
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self.assertIs(type(self.sysmod.last_value), IndentationError)
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self.assertIsNone(self.sysmod.last_traceback)
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self.assertIsNone(self.sysmod.last_value.__traceback__)
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self.assertIs(self.sysmod.last_exc, self.sysmod.last_value)
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def test_unicode_error(self):
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self.infunc.side_effect = ["'\ud800'", EOFError('Finished')]
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self.console.interact()
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output = ''.join(''.join(call[1]) for call in self.stderr.method_calls)
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output = output[output.index('(InteractiveConsole)'):]
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output = output[output.index('\n') + 1:]
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self.assertTrue(output.startswith('UnicodeEncodeError: '), output)
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self.assertIs(self.sysmod.last_type, UnicodeEncodeError)
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self.assertIs(type(self.sysmod.last_value), UnicodeEncodeError)
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self.assertIsNone(self.sysmod.last_traceback)
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self.assertIsNone(self.sysmod.last_value.__traceback__)
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self.assertIs(self.sysmod.last_exc, self.sysmod.last_value)
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def test_sysexcepthook(self):
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self.infunc.side_effect = ["def f():",
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" raise ValueError('BOOM!')",
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"",
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"f()",
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EOFError('Finished')]
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hook = mock.Mock()
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self.sysmod.excepthook = hook
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self.console.interact()
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hook.assert_called()
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hook.assert_called_with(self.sysmod.last_type,
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self.sysmod.last_value,
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self.sysmod.last_traceback)
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self.assertIs(self.sysmod.last_type, ValueError)
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self.assertIs(type(self.sysmod.last_value), ValueError)
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self.assertIs(self.sysmod.last_traceback, self.sysmod.last_value.__traceback__)
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self.assertIs(self.sysmod.last_exc, self.sysmod.last_value)
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self.assertEqual(traceback.format_exception(self.sysmod.last_exc), [
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'Traceback (most recent call last):\n',
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' File "<console>", line 1, in <module>\n',
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' File "<console>", line 2, in f\n',
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'ValueError: BOOM!\n'])
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def test_sysexcepthook_syntax_error(self):
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self.infunc.side_effect = ["def f():",
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" x = ?",
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"",
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EOFError('Finished')]
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hook = mock.Mock()
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self.sysmod.excepthook = hook
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self.console.interact()
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hook.assert_called()
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hook.assert_called_with(self.sysmod.last_type,
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self.sysmod.last_value,
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self.sysmod.last_traceback)
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self.assertIs(self.sysmod.last_type, SyntaxError)
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self.assertIs(type(self.sysmod.last_value), SyntaxError)
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self.assertIsNone(self.sysmod.last_traceback)
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self.assertIsNone(self.sysmod.last_value.__traceback__)
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self.assertIs(self.sysmod.last_exc, self.sysmod.last_value)
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self.assertEqual(traceback.format_exception(self.sysmod.last_exc), [
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' File "<console>", line 2\n',
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' x = ?\n',
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' ^\n',
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'SyntaxError: invalid syntax\n'])
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def test_sysexcepthook_indentation_error(self):
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self.infunc.side_effect = [" 1", EOFError('Finished')]
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hook = mock.Mock()
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self.sysmod.excepthook = hook
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self.console.interact()
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hook.assert_called()
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hook.assert_called_with(self.sysmod.last_type,
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self.sysmod.last_value,
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self.sysmod.last_traceback)
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self.assertIs(self.sysmod.last_type, IndentationError)
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self.assertIs(type(self.sysmod.last_value), IndentationError)
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self.assertIsNone(self.sysmod.last_traceback)
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self.assertIsNone(self.sysmod.last_value.__traceback__)
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self.assertIs(self.sysmod.last_exc, self.sysmod.last_value)
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self.assertEqual(traceback.format_exception(self.sysmod.last_exc), [
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' File "<console>", line 1\n',
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' 1\n',
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'IndentationError: unexpected indent\n'])
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def test_sysexcepthook_crashing_doesnt_close_repl(self):
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self.infunc.side_effect = ["1/0", "a = 123", "print(a)", EOFError('Finished')]
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self.sysmod.excepthook = 1
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self.console.interact()
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self.assertEqual(['write', ('123', ), {}], self.stdout.method_calls[0])
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error = "".join(call.args[0] for call in self.stderr.method_calls if call[0] == 'write')
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self.assertIn("Error in sys.excepthook:", error)
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self.assertEqual(error.count("'int' object is not callable"), 1)
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self.assertIn("Original exception was:", error)
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self.assertIn("division by zero", error)
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def test_sysexcepthook_raising_BaseException(self):
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self.infunc.side_effect = ["1/0", "a = 123", "print(a)", EOFError('Finished')]
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s = "not so fast"
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def raise_base(*args, **kwargs):
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raise BaseException(s)
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self.sysmod.excepthook = raise_base
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self.console.interact()
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self.assertEqual(['write', ('123', ), {}], self.stdout.method_calls[0])
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error = "".join(call.args[0] for call in self.stderr.method_calls if call[0] == 'write')
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self.assertIn("Error in sys.excepthook:", error)
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self.assertEqual(error.count("not so fast"), 1)
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self.assertIn("Original exception was:", error)
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self.assertIn("division by zero", error)
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def test_sysexcepthook_raising_SystemExit_gets_through(self):
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self.infunc.side_effect = ["1/0"]
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def raise_base(*args, **kwargs):
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raise SystemExit
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self.sysmod.excepthook = raise_base
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with self.assertRaises(SystemExit):
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self.console.interact()
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def test_banner(self):
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# with banner
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self.infunc.side_effect = EOFError('Finished')
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self.console.interact(banner='Foo')
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self.assertEqual(len(self.stderr.method_calls), 3)
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banner_call = self.stderr.method_calls[0]
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self.assertEqual(banner_call, ['write', ('Foo\n',), {}])
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# no banner
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self.stderr.reset_mock()
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self.infunc.side_effect = EOFError('Finished')
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self.console.interact(banner='')
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self.assertEqual(len(self.stderr.method_calls), 2)
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def test_exit_msg(self):
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# default exit message
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self.infunc.side_effect = EOFError('Finished')
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self.console.interact(banner='')
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self.assertEqual(len(self.stderr.method_calls), 2)
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err_msg = self.stderr.method_calls[1]
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expected = 'now exiting InteractiveConsole...\n'
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self.assertEqual(err_msg, ['write', (expected,), {}])
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# no exit message
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self.stderr.reset_mock()
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self.infunc.side_effect = EOFError('Finished')
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self.console.interact(banner='', exitmsg='')
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self.assertEqual(len(self.stderr.method_calls), 1)
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# custom exit message
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self.stderr.reset_mock()
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message = (
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'bye! \N{GREEK SMALL LETTER ZETA}\N{CYRILLIC SMALL LETTER ZHE}'
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)
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self.infunc.side_effect = EOFError('Finished')
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self.console.interact(banner='', exitmsg=message)
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self.assertEqual(len(self.stderr.method_calls), 2)
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err_msg = self.stderr.method_calls[1]
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expected = message + '\n'
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self.assertEqual(err_msg, ['write', (expected,), {}])
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def test_cause_tb(self):
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self.infunc.side_effect = ["raise ValueError('') from AttributeError",
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EOFError('Finished')]
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self.console.interact()
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output = ''.join(''.join(call[1]) for call in self.stderr.method_calls)
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expected = dedent("""
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AttributeError
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The above exception was the direct cause of the following exception:
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Traceback (most recent call last):
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File "<console>", line 1, in <module>
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ValueError
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""")
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self.assertIn(expected, output)
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self.assertIs(self.sysmod.last_type, ValueError)
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self.assertIs(type(self.sysmod.last_value), ValueError)
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self.assertIs(self.sysmod.last_traceback, self.sysmod.last_value.__traceback__)
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self.assertIsNotNone(self.sysmod.last_traceback)
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self.assertIs(self.sysmod.last_exc, self.sysmod.last_value)
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def test_context_tb(self):
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self.infunc.side_effect = ["try: ham\nexcept: eggs\n",
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EOFError('Finished')]
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self.console.interact()
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output = ''.join(''.join(call[1]) for call in self.stderr.method_calls)
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expected = dedent("""
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Traceback (most recent call last):
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File "<console>", line 1, in <module>
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NameError: name 'ham' is not defined
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During handling of the above exception, another exception occurred:
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Traceback (most recent call last):
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File "<console>", line 2, in <module>
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NameError: name 'eggs' is not defined
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""")
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self.assertIn(expected, output)
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self.assertIs(self.sysmod.last_type, NameError)
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self.assertIs(type(self.sysmod.last_value), NameError)
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self.assertIs(self.sysmod.last_traceback, self.sysmod.last_value.__traceback__)
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self.assertIsNotNone(self.sysmod.last_traceback)
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self.assertIs(self.sysmod.last_exc, self.sysmod.last_value)
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class TestInteractiveConsoleLocalExit(unittest.TestCase, MockSys):
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def setUp(self):
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self.console = code.InteractiveConsole(local_exit=True)
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self.mock_sys()
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@unittest.skipIf(sys.flags.no_site, "exit() isn't defined unless there's a site module")
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def test_exit(self):
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# default exit message
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self.infunc.side_effect = ["exit()"]
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self.console.interact(banner='')
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self.assertEqual(len(self.stderr.method_calls), 2)
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err_msg = self.stderr.method_calls[1]
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expected = 'now exiting InteractiveConsole...\n'
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self.assertEqual(err_msg, ['write', (expected,), {}])
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if __name__ == "__main__":
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unittest.main()
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