Preview: test_run.py
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/opt/alt/python37/lib64/python3.7/idlelib/idle_test/test_run.py
"Test run, coverage 42%."
from idlelib import run
import unittest
from unittest import mock
from test.support import captured_stderr
import io
import sys
class RunTest(unittest.TestCase):
def test_print_exception_unhashable(self):
class UnhashableException(Exception):
def __eq__(self, other):
return True
ex1 = UnhashableException('ex1')
ex2 = UnhashableException('ex2')
try:
raise ex2 from ex1
except UnhashableException:
try:
raise ex1
except UnhashableException:
with captured_stderr() as output:
with mock.patch.object(run,
'cleanup_traceback') as ct:
ct.side_effect = lambda t, e: t
run.print_exception()
tb = output.getvalue().strip().splitlines()
self.assertEqual(11, len(tb))
self.assertIn('UnhashableException: ex2', tb[3])
self.assertIn('UnhashableException: ex1', tb[10])
# StdioFile tests.
class S(str):
def __str__(self):
return '%s:str' % type(self).__name__
def __unicode__(self):
return '%s:unicode' % type(self).__name__
def __len__(self):
return 3
def __iter__(self):
return iter('abc')
def __getitem__(self, *args):
return '%s:item' % type(self).__name__
def __getslice__(self, *args):
return '%s:slice' % type(self).__name__
class MockShell:
def __init__(self):
self.reset()
def write(self, *args):
self.written.append(args)
def readline(self):
return self.lines.pop()
def close(self):
pass
def reset(self):
self.written = []
def push(self, lines):
self.lines = list(lines)[::-1]
class StdInputFilesTest(unittest.TestCase):
def test_misc(self):
shell = MockShell()
f = run.StdInputFile(shell, 'stdin')
self.assertIsInstance(f, io.TextIOBase)
self.assertEqual(f.encoding, 'utf-8')
self.assertEqual(f.errors, 'strict')
self.assertIsNone(f.newlines)
self.assertEqual(f.name, '<stdin>')
self.assertFalse(f.closed)
self.assertTrue(f.isatty())
self.assertTrue(f.readable())
self.assertFalse(f.writable())
self.assertFalse(f.seekable())
def test_unsupported(self):
shell = MockShell()
f = run.StdInputFile(shell, 'stdin')
self.assertRaises(OSError, f.fileno)
self.assertRaises(OSError, f.tell)
self.assertRaises(OSError, f.seek, 0)
self.assertRaises(OSError, f.write, 'x')
self.assertRaises(OSError, f.writelines, ['x'])
def test_read(self):
shell = MockShell()
f = run.StdInputFile(shell, 'stdin')
shell.push(['one\n', 'two\n', ''])
self.assertEqual(f.read(), 'one\ntwo\n')
shell.push(['one\n', 'two\n', ''])
self.assertEqual(f.read(-1), 'one\ntwo\n')
shell.push(['one\n', 'two\n', ''])
self.assertEqual(f.read(None), 'one\ntwo\n')
shell.push(['one\n', 'two\n', 'three\n', ''])
self.assertEqual(f.read(2), 'on')
self.assertEqual(f.read(3), 'e\nt')
self.assertEqual(f.read(10), 'wo\nthree\n')
shell.push(['one\n', 'two\n'])
self.assertEqual(f.read(0), '')
self.assertRaises(TypeError, f.read, 1.5)
self.assertRaises(TypeError, f.read, '1')
self.assertRaises(TypeError, f.read, 1, 1)
def test_readline(self):
shell = MockShell()
f = run.StdInputFile(shell, 'stdin')
shell.push(['one\n', 'two\n', 'three\n', 'four\n'])
self.assertEqual(f.readline(), 'one\n')
self.assertEqual(f.readline(-1), 'two\n')
self.assertEqual(f.readline(None), 'three\n')
shell.push(['one\ntwo\n'])
self.assertEqual(f.readline(), 'one\n')
self.assertEqual(f.readline(), 'two\n')
shell.push(['one', 'two', 'three'])
self.assertEqual(f.readline(), 'one')
self.assertEqual(f.readline(), 'two')
shell.push(['one\n', 'two\n', 'three\n'])
self.assertEqual(f.readline(2), 'on')
self.assertEqual(f.readline(1), 'e')
self.assertEqual(f.readline(1), '\n')
self.assertEqual(f.readline(10), 'two\n')
shell.push(['one\n', 'two\n'])
self.assertEqual(f.readline(0), '')
self.assertRaises(TypeError, f.readlines, 1.5)
self.assertRaises(TypeError, f.readlines, '1')
self.assertRaises(TypeError, f.readlines, 1, 1)
def test_readlines(self):
shell = MockShell()
f = run.StdInputFile(shell, 'stdin')
shell.push(['one\n', 'two\n', ''])
self.assertEqual(f.readlines(), ['one\n', 'two\n'])
shell.push(['one\n', 'two\n', ''])
self.assertEqual(f.readlines(-1), ['one\n', 'two\n'])
shell.push(['one\n', 'two\n', ''])
self.assertEqual(f.readlines(None), ['one\n', 'two\n'])
shell.push(['one\n', 'two\n', ''])
self.assertEqual(f.readlines(0), ['one\n', 'two\n'])
shell.push(['one\n', 'two\n', ''])
self.assertEqual(f.readlines(3), ['one\n'])
shell.push(['one\n', 'two\n', ''])
self.assertEqual(f.readlines(4), ['one\n', 'two\n'])
shell.push(['one\n', 'two\n', ''])
self.assertRaises(TypeError, f.readlines, 1.5)
self.assertRaises(TypeError, f.readlines, '1')
self.assertRaises(TypeError, f.readlines, 1, 1)
def test_close(self):
shell = MockShell()
f = run.StdInputFile(shell, 'stdin')
shell.push(['one\n', 'two\n', ''])
self.assertFalse(f.closed)
self.assertEqual(f.readline(), 'one\n')
f.close()
self.assertFalse(f.closed)
self.assertEqual(f.readline(), 'two\n')
self.assertRaises(TypeError, f.close, 1)
class StdOutputFilesTest(unittest.TestCase):
def test_misc(self):
shell = MockShell()
f = run.StdOutputFile(shell, 'stdout')
self.assertIsInstance(f, io.TextIOBase)
self.assertEqual(f.encoding, 'utf-8')
self.assertEqual(f.errors, 'strict')
self.assertIsNone(f.newlines)
self.assertEqual(f.name, '<stdout>')
self.assertFalse(f.closed)
self.assertTrue(f.isatty())
self.assertFalse(f.readable())
self.assertTrue(f.writable())
self.assertFalse(f.seekable())
def test_unsupported(self):
shell = MockShell()
f = run.StdOutputFile(shell, 'stdout')
self.assertRaises(OSError, f.fileno)
self.assertRaises(OSError, f.tell)
self.assertRaises(OSError, f.seek, 0)
self.assertRaises(OSError, f.read, 0)
self.assertRaises(OSError, f.readline, 0)
def test_write(self):
shell = MockShell()
f = run.StdOutputFile(shell, 'stdout')
f.write('test')
self.assertEqual(shell.written, [('test', 'stdout')])
shell.reset()
f.write('t\xe8\u015b\U0001d599')
self.assertEqual(shell.written, [('t\xe8\u015b\U0001d599', 'stdout')])
shell.reset()
f.write(S('t\xe8\u015b\U0001d599'))
self.assertEqual(shell.written, [('t\xe8\u015b\U0001d599', 'stdout')])
self.assertEqual(type(shell.written[0][0]), str)
shell.reset()
self.assertRaises(TypeError, f.write)
self.assertEqual(shell.written, [])
self.assertRaises(TypeError, f.write, b'test')
self.assertRaises(TypeError, f.write, 123)
self.assertEqual(shell.written, [])
self.assertRaises(TypeError, f.write, 'test', 'spam')
self.assertEqual(shell.written, [])
def test_write_stderr_nonencodable(self):
shell = MockShell()
f = run.StdOutputFile(shell, 'stderr', 'iso-8859-15', 'backslashreplace')
f.write('t\xe8\u015b\U0001d599\xa4')
self.assertEqual(shell.written, [('t\xe8\\u015b\\U0001d599\\xa4', 'stderr')])
shell.reset()
f.write(S('t\xe8\u015b\U0001d599\xa4'))
self.assertEqual(shell.written, [('t\xe8\\u015b\\U0001d599\\xa4', 'stderr')])
self.assertEqual(type(shell.written[0][0]), str)
shell.reset()
self.assertRaises(TypeError, f.write)
self.assertEqual(shell.written, [])
self.assertRaises(TypeError, f.write, b'test')
self.assertRaises(TypeError, f.write, 123)
self.assertEqual(shell.written, [])
self.assertRaises(TypeError, f.write, 'test', 'spam')
self.assertEqual(shell.written, [])
def test_writelines(self):
shell = MockShell()
f = run.StdOutputFile(shell, 'stdout')
f.writelines([])
self.assertEqual(shell.written, [])
shell.reset()
f.writelines(['one\n', 'two'])
self.assertEqual(shell.written,
[('one\n', 'stdout'), ('two', 'stdout')])
shell.reset()
f.writelines(['on\xe8\n', 'tw\xf2'])
self.assertEqual(shell.written,
[('on\xe8\n', 'stdout'), ('tw\xf2', 'stdout')])
shell.reset()
f.writelines([S('t\xe8st')])
self.assertEqual(shell.written, [('t\xe8st', 'stdout')])
self.assertEqual(type(shell.written[0][0]), str)
shell.reset()
self.assertRaises(TypeError, f.writelines)
self.assertEqual(shell.written, [])
self.assertRaises(TypeError, f.writelines, 123)
self.assertEqual(shell.written, [])
self.assertRaises(TypeError, f.writelines, [b'test'])
self.assertRaises(TypeError, f.writelines, [123])
self.assertEqual(shell.written, [])
self.assertRaises(TypeError, f.writelines, [], [])
self.assertEqual(shell.written, [])
def test_close(self):
shell = MockShell()
f = run.StdOutputFile(shell, 'stdout')
self.assertFalse(f.closed)
f.write('test')
f.close()
self.assertTrue(f.closed)
self.assertRaises(ValueError, f.write, 'x')
self.assertEqual(shell.written, [('test', 'stdout')])
f.close()
self.assertRaises(TypeError, f.close, 1)
class TestSysRecursionLimitWrappers(unittest.TestCase):
def test_bad_setrecursionlimit_calls(self):
run.install_recursionlimit_wrappers()
self.addCleanup(run.uninstall_recursionlimit_wrappers)
f = sys.setrecursionlimit
self.assertRaises(TypeError, f, limit=100)
self.assertRaises(TypeError, f, 100, 1000)
self.assertRaises(ValueError, f, 0)
def test_roundtrip(self):
run.install_recursionlimit_wrappers()
self.addCleanup(run.uninstall_recursionlimit_wrappers)
# check that setting the recursion limit works
orig_reclimit = sys.getrecursionlimit()
self.addCleanup(sys.setrecursionlimit, orig_reclimit)
sys.setrecursionlimit(orig_reclimit + 3)
# check that the new limit is returned by sys.getrecursionlimit()
new_reclimit = sys.getrecursionlimit()
self.assertEqual(new_reclimit, orig_reclimit + 3)
def test_default_recursion_limit_preserved(self):
orig_reclimit = sys.getrecursionlimit()
run.install_recursionlimit_wrappers()
self.addCleanup(run.uninstall_recursionlimit_wrappers)
new_reclimit = sys.getrecursionlimit()
self.assertEqual(new_reclimit, orig_reclimit)
def test_fixdoc(self):
def func(): "docstring"
run.fixdoc(func, "more")
self.assertEqual(func.__doc__, "docstring\n\nmore")
func.__doc__ = None
run.fixdoc(func, "more")
self.assertEqual(func.__doc__, "more")
if __name__ == '__main__':
unittest.main(verbosity=2)
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