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test_io.py
import unittest import io from idlelib.PyShell import PseudoInputFile, PseudoOutputFile from test import test_support as support class Base(object): 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 S(Base, str): pass class U(Base, unicode): pass class BA(Base, bytearray): pass 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 PseudeOutputFilesTest(unittest.TestCase): def test_misc(self): shell = MockShell() f = PseudoOutputFile(shell, 'stdout', 'utf-8') self.assertIsInstance(f, io.TextIOBase) self.assertEqual(f.encoding, 'utf-8') self.assertIsNone(f.errors) 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 = PseudoOutputFile(shell, 'stdout', 'utf-8') self.assertRaises(IOError, f.fileno) self.assertRaises(IOError, f.tell) self.assertRaises(IOError, f.seek, 0) self.assertRaises(IOError, f.read, 0) self.assertRaises(IOError, f.readline, 0) def test_write(self): shell = MockShell() f = PseudoOutputFile(shell, 'stdout', 'utf-8') f.write('test') self.assertEqual(shell.written, [('test', 'stdout')]) shell.reset() f.write('t\xe8st') self.assertEqual(shell.written, [('t\xe8st', 'stdout')]) shell.reset() f.write(u't\xe8st') self.assertEqual(shell.written, [(u't\xe8st', 'stdout')]) shell.reset() f.write(S('t\xe8st')) self.assertEqual(shell.written, [('t\xe8st', 'stdout')]) self.assertEqual(type(shell.written[0][0]), str) shell.reset() f.write(BA('t\xe8st')) self.assertEqual(shell.written, [('t\xe8st', 'stdout')]) self.assertEqual(type(shell.written[0][0]), str) shell.reset() f.write(U(u't\xe8st')) self.assertEqual(shell.written, [(u't\xe8st', 'stdout')]) self.assertEqual(type(shell.written[0][0]), unicode) shell.reset() self.assertRaises(TypeError, f.write) self.assertEqual(shell.written, []) 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 = PseudoOutputFile(shell, 'stdout', 'utf-8') 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([u'on\xe8\n', u'tw\xf2']) self.assertEqual(shell.written, [(u'on\xe8\n', 'stdout'), (u'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() f.writelines([BA('t\xe8st')]) self.assertEqual(shell.written, [('t\xe8st', 'stdout')]) self.assertEqual(type(shell.written[0][0]), str) shell.reset() f.writelines([U(u't\xe8st')]) self.assertEqual(shell.written, [(u't\xe8st', 'stdout')]) self.assertEqual(type(shell.written[0][0]), unicode) 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, [123]) self.assertEqual(shell.written, []) self.assertRaises(TypeError, f.writelines, [], []) self.assertEqual(shell.written, []) def test_close(self): shell = MockShell() f = PseudoOutputFile(shell, 'stdout', 'utf-8') 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 PseudeInputFilesTest(unittest.TestCase): def test_misc(self): shell = MockShell() f = PseudoInputFile(shell, 'stdin', 'utf-8') self.assertIsInstance(f, io.TextIOBase) self.assertEqual(f.encoding, 'utf-8') self.assertIsNone(f.errors) 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 = PseudoInputFile(shell, 'stdin', 'utf-8') self.assertRaises(IOError, f.fileno) self.assertRaises(IOError, f.tell) self.assertRaises(IOError, f.seek, 0) self.assertRaises(IOError, f.write, 'x') self.assertRaises(IOError, f.writelines, ['x']) def test_read(self): shell = MockShell() f = PseudoInputFile(shell, 'stdin', 'utf-8') 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 = PseudoInputFile(shell, 'stdin', 'utf-8') 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 = PseudoInputFile(shell, 'stdin', 'utf-8') 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 = PseudoInputFile(shell, 'stdin', 'utf-8') 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) def test_main(): support.run_unittest(PseudeOutputFilesTest, PseudeInputFilesTest) if __name__ == '__main__': test_main()
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