mirror of https://github.com/python/cpython
142 lines
4.3 KiB
Python
142 lines
4.3 KiB
Python
'''Tests for WindowsConsoleIO
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'''
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import io
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import unittest
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import sys
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if sys.platform != 'win32':
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raise unittest.SkipTest("test only relevant on win32")
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from _testconsole import write_input
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ConIO = io._WindowsConsoleIO
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class WindowsConsoleIOTests(unittest.TestCase):
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def test_abc(self):
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self.assertTrue(issubclass(ConIO, io.RawIOBase))
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self.assertFalse(issubclass(ConIO, io.BufferedIOBase))
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self.assertFalse(issubclass(ConIO, io.TextIOBase))
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def test_open_fd(self):
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try:
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f = ConIO(0)
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except ValueError:
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# cannot open console because it's not a real console
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pass
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else:
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self.assertTrue(f.readable())
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self.assertFalse(f.writable())
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self.assertEqual(0, f.fileno())
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f.close() # multiple close should not crash
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f.close()
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try:
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f = ConIO(1, 'w')
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except ValueError:
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# cannot open console because it's not a real console
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pass
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else:
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self.assertFalse(f.readable())
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self.assertTrue(f.writable())
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self.assertEqual(1, f.fileno())
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f.close()
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f.close()
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try:
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f = ConIO(2, 'w')
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except ValueError:
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# cannot open console because it's not a real console
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pass
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else:
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self.assertFalse(f.readable())
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self.assertTrue(f.writable())
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self.assertEqual(2, f.fileno())
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f.close()
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f.close()
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def test_open_name(self):
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f = ConIO("CON")
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self.assertTrue(f.readable())
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self.assertFalse(f.writable())
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self.assertIsNotNone(f.fileno())
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f.close() # multiple close should not crash
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f.close()
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f = ConIO('CONIN$')
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self.assertTrue(f.readable())
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self.assertFalse(f.writable())
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self.assertIsNotNone(f.fileno())
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f.close()
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f.close()
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f = ConIO('CONOUT$', 'w')
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self.assertFalse(f.readable())
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self.assertTrue(f.writable())
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self.assertIsNotNone(f.fileno())
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f.close()
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f.close()
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def assertStdinRoundTrip(self, text):
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stdin = open('CONIN$', 'r')
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old_stdin = sys.stdin
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try:
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sys.stdin = stdin
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write_input(
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stdin.buffer.raw,
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(text + '\r\n').encode('utf-16-le', 'surrogatepass')
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)
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actual = input()
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finally:
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sys.stdin = old_stdin
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self.assertEqual(actual, text)
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def test_input(self):
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# ASCII
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self.assertStdinRoundTrip('abc123')
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# Non-ASCII
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self.assertStdinRoundTrip('ϼўТλФЙ')
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# Combining characters
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self.assertStdinRoundTrip('A͏B ﬖ̳AA̝')
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# Non-BMP
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self.assertStdinRoundTrip('\U00100000\U0010ffff\U0010fffd')
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def test_partial_reads(self):
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# Test that reading less than 1 full character works when stdin
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# contains multibyte UTF-8 sequences
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source = 'ϼўТλФЙ\r\n'.encode('utf-16-le')
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expected = 'ϼўТλФЙ\r\n'.encode('utf-8')
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for read_count in range(1, 16):
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stdin = open('CONIN$', 'rb', buffering=0)
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write_input(stdin, source)
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actual = b''
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while not actual.endswith(b'\n'):
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b = stdin.read(read_count)
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actual += b
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self.assertEqual(actual, expected, 'stdin.read({})'.format(read_count))
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stdin.close()
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def test_partial_surrogate_reads(self):
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# Test that reading less than 1 full character works when stdin
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# contains surrogate pairs that cannot be decoded to UTF-8 without
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# reading an extra character.
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source = '\U00101FFF\U00101001\r\n'.encode('utf-16-le')
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expected = '\U00101FFF\U00101001\r\n'.encode('utf-8')
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for read_count in range(1, 16):
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stdin = open('CONIN$', 'rb', buffering=0)
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write_input(stdin, source)
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actual = b''
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while not actual.endswith(b'\n'):
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b = stdin.read(read_count)
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actual += b
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self.assertEqual(actual, expected, 'stdin.read({})'.format(read_count))
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stdin.close()
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if __name__ == "__main__":
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unittest.main()
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