| 1 | n/a | """Unit tests for memory-based file-like objects. |
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| 2 | n/a | StringIO -- for unicode strings |
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| 3 | n/a | BytesIO -- for bytes |
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| 4 | n/a | """ |
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| 5 | n/a | |
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| 6 | n/a | import unittest |
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| 7 | n/a | from test import support |
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| 8 | n/a | |
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| 9 | n/a | import io |
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| 10 | n/a | import _pyio as pyio |
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| 11 | n/a | import pickle |
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| 12 | n/a | import sys |
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| 13 | n/a | |
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| 14 | n/a | class MemorySeekTestMixin: |
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| 15 | n/a | |
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| 16 | n/a | def testInit(self): |
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| 17 | n/a | buf = self.buftype("1234567890") |
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| 18 | n/a | bytesIo = self.ioclass(buf) |
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| 19 | n/a | |
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| 20 | n/a | def testRead(self): |
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| 21 | n/a | buf = self.buftype("1234567890") |
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| 22 | n/a | bytesIo = self.ioclass(buf) |
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| 23 | n/a | |
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| 24 | n/a | self.assertEqual(buf[:1], bytesIo.read(1)) |
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| 25 | n/a | self.assertEqual(buf[1:5], bytesIo.read(4)) |
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| 26 | n/a | self.assertEqual(buf[5:], bytesIo.read(900)) |
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| 27 | n/a | self.assertEqual(self.EOF, bytesIo.read()) |
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| 28 | n/a | |
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| 29 | n/a | def testReadNoArgs(self): |
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| 30 | n/a | buf = self.buftype("1234567890") |
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| 31 | n/a | bytesIo = self.ioclass(buf) |
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| 32 | n/a | |
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| 33 | n/a | self.assertEqual(buf, bytesIo.read()) |
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| 34 | n/a | self.assertEqual(self.EOF, bytesIo.read()) |
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| 35 | n/a | |
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| 36 | n/a | def testSeek(self): |
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| 37 | n/a | buf = self.buftype("1234567890") |
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| 38 | n/a | bytesIo = self.ioclass(buf) |
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| 39 | n/a | |
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| 40 | n/a | bytesIo.read(5) |
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| 41 | n/a | bytesIo.seek(0) |
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| 42 | n/a | self.assertEqual(buf, bytesIo.read()) |
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| 43 | n/a | |
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| 44 | n/a | bytesIo.seek(3) |
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| 45 | n/a | self.assertEqual(buf[3:], bytesIo.read()) |
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| 46 | n/a | self.assertRaises(TypeError, bytesIo.seek, 0.0) |
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| 47 | n/a | |
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| 48 | n/a | def testTell(self): |
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| 49 | n/a | buf = self.buftype("1234567890") |
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| 50 | n/a | bytesIo = self.ioclass(buf) |
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| 51 | n/a | |
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| 52 | n/a | self.assertEqual(0, bytesIo.tell()) |
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| 53 | n/a | bytesIo.seek(5) |
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| 54 | n/a | self.assertEqual(5, bytesIo.tell()) |
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| 55 | n/a | bytesIo.seek(10000) |
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| 56 | n/a | self.assertEqual(10000, bytesIo.tell()) |
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| 57 | n/a | |
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| 58 | n/a | |
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| 59 | n/a | class MemoryTestMixin: |
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| 60 | n/a | |
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| 61 | n/a | def test_detach(self): |
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| 62 | n/a | buf = self.ioclass() |
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| 63 | n/a | self.assertRaises(self.UnsupportedOperation, buf.detach) |
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| 64 | n/a | |
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| 65 | n/a | def write_ops(self, f, t): |
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| 66 | n/a | self.assertEqual(f.write(t("blah.")), 5) |
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| 67 | n/a | self.assertEqual(f.seek(0), 0) |
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| 68 | n/a | self.assertEqual(f.write(t("Hello.")), 6) |
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| 69 | n/a | self.assertEqual(f.tell(), 6) |
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| 70 | n/a | self.assertEqual(f.seek(5), 5) |
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| 71 | n/a | self.assertEqual(f.tell(), 5) |
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| 72 | n/a | self.assertEqual(f.write(t(" world\n\n\n")), 9) |
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| 73 | n/a | self.assertEqual(f.seek(0), 0) |
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| 74 | n/a | self.assertEqual(f.write(t("h")), 1) |
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| 75 | n/a | self.assertEqual(f.truncate(12), 12) |
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| 76 | n/a | self.assertEqual(f.tell(), 1) |
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| 77 | n/a | |
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| 78 | n/a | def test_write(self): |
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| 79 | n/a | buf = self.buftype("hello world\n") |
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| 80 | n/a | memio = self.ioclass(buf) |
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| 81 | n/a | |
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| 82 | n/a | self.write_ops(memio, self.buftype) |
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| 83 | n/a | self.assertEqual(memio.getvalue(), buf) |
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| 84 | n/a | memio = self.ioclass() |
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| 85 | n/a | self.write_ops(memio, self.buftype) |
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| 86 | n/a | self.assertEqual(memio.getvalue(), buf) |
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| 87 | n/a | self.assertRaises(TypeError, memio.write, None) |
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| 88 | n/a | memio.close() |
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| 89 | n/a | self.assertRaises(ValueError, memio.write, self.buftype("")) |
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| 90 | n/a | |
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| 91 | n/a | def test_writelines(self): |
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| 92 | n/a | buf = self.buftype("1234567890") |
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| 93 | n/a | memio = self.ioclass() |
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| 94 | n/a | |
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| 95 | n/a | self.assertEqual(memio.writelines([buf] * 100), None) |
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| 96 | n/a | self.assertEqual(memio.getvalue(), buf * 100) |
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| 97 | n/a | memio.writelines([]) |
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| 98 | n/a | self.assertEqual(memio.getvalue(), buf * 100) |
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| 99 | n/a | memio = self.ioclass() |
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| 100 | n/a | self.assertRaises(TypeError, memio.writelines, [buf] + [1]) |
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| 101 | n/a | self.assertEqual(memio.getvalue(), buf) |
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| 102 | n/a | self.assertRaises(TypeError, memio.writelines, None) |
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| 103 | n/a | memio.close() |
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| 104 | n/a | self.assertRaises(ValueError, memio.writelines, []) |
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| 105 | n/a | |
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| 106 | n/a | def test_writelines_error(self): |
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| 107 | n/a | memio = self.ioclass() |
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| 108 | n/a | def error_gen(): |
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| 109 | n/a | yield self.buftype('spam') |
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| 110 | n/a | raise KeyboardInterrupt |
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| 111 | n/a | |
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| 112 | n/a | self.assertRaises(KeyboardInterrupt, memio.writelines, error_gen()) |
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| 113 | n/a | |
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| 114 | n/a | def test_truncate(self): |
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| 115 | n/a | buf = self.buftype("1234567890") |
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| 116 | n/a | memio = self.ioclass(buf) |
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| 117 | n/a | |
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| 118 | n/a | self.assertRaises(ValueError, memio.truncate, -1) |
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| 119 | n/a | memio.seek(6) |
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| 120 | n/a | self.assertEqual(memio.truncate(), 6) |
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| 121 | n/a | self.assertEqual(memio.getvalue(), buf[:6]) |
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| 122 | n/a | self.assertEqual(memio.truncate(4), 4) |
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| 123 | n/a | self.assertEqual(memio.getvalue(), buf[:4]) |
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| 124 | n/a | self.assertEqual(memio.tell(), 6) |
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| 125 | n/a | memio.seek(0, 2) |
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| 126 | n/a | memio.write(buf) |
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| 127 | n/a | self.assertEqual(memio.getvalue(), buf[:4] + buf) |
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| 128 | n/a | pos = memio.tell() |
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| 129 | n/a | self.assertEqual(memio.truncate(None), pos) |
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| 130 | n/a | self.assertEqual(memio.tell(), pos) |
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| 131 | n/a | self.assertRaises(TypeError, memio.truncate, '0') |
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| 132 | n/a | memio.close() |
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| 133 | n/a | self.assertRaises(ValueError, memio.truncate, 0) |
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| 134 | n/a | |
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| 135 | n/a | def test_init(self): |
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| 136 | n/a | buf = self.buftype("1234567890") |
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| 137 | n/a | memio = self.ioclass(buf) |
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| 138 | n/a | self.assertEqual(memio.getvalue(), buf) |
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| 139 | n/a | memio = self.ioclass(None) |
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| 140 | n/a | self.assertEqual(memio.getvalue(), self.EOF) |
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| 141 | n/a | memio.__init__(buf * 2) |
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| 142 | n/a | self.assertEqual(memio.getvalue(), buf * 2) |
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| 143 | n/a | memio.__init__(buf) |
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| 144 | n/a | self.assertEqual(memio.getvalue(), buf) |
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| 145 | n/a | self.assertRaises(TypeError, memio.__init__, []) |
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| 146 | n/a | |
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| 147 | n/a | def test_read(self): |
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| 148 | n/a | buf = self.buftype("1234567890") |
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| 149 | n/a | memio = self.ioclass(buf) |
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| 150 | n/a | |
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| 151 | n/a | self.assertEqual(memio.read(0), self.EOF) |
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| 152 | n/a | self.assertEqual(memio.read(1), buf[:1]) |
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| 153 | n/a | self.assertEqual(memio.read(4), buf[1:5]) |
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| 154 | n/a | self.assertEqual(memio.read(900), buf[5:]) |
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| 155 | n/a | self.assertEqual(memio.read(), self.EOF) |
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| 156 | n/a | memio.seek(0) |
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| 157 | n/a | self.assertEqual(memio.read(), buf) |
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| 158 | n/a | self.assertEqual(memio.read(), self.EOF) |
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| 159 | n/a | self.assertEqual(memio.tell(), 10) |
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| 160 | n/a | memio.seek(0) |
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| 161 | n/a | self.assertEqual(memio.read(-1), buf) |
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| 162 | n/a | memio.seek(0) |
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| 163 | n/a | self.assertEqual(type(memio.read()), type(buf)) |
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| 164 | n/a | memio.seek(100) |
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| 165 | n/a | self.assertEqual(type(memio.read()), type(buf)) |
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| 166 | n/a | memio.seek(0) |
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| 167 | n/a | self.assertEqual(memio.read(None), buf) |
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| 168 | n/a | self.assertRaises(TypeError, memio.read, '') |
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| 169 | n/a | memio.seek(len(buf) + 1) |
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| 170 | n/a | self.assertEqual(memio.read(1), self.EOF) |
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| 171 | n/a | memio.seek(len(buf) + 1) |
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| 172 | n/a | self.assertEqual(memio.read(), self.EOF) |
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| 173 | n/a | memio.close() |
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| 174 | n/a | self.assertRaises(ValueError, memio.read) |
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| 175 | n/a | |
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| 176 | n/a | def test_readline(self): |
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| 177 | n/a | buf = self.buftype("1234567890\n") |
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| 178 | n/a | memio = self.ioclass(buf * 2) |
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| 179 | n/a | |
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| 180 | n/a | self.assertEqual(memio.readline(0), self.EOF) |
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| 181 | n/a | self.assertEqual(memio.readline(), buf) |
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| 182 | n/a | self.assertEqual(memio.readline(), buf) |
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| 183 | n/a | self.assertEqual(memio.readline(), self.EOF) |
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| 184 | n/a | memio.seek(0) |
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| 185 | n/a | self.assertEqual(memio.readline(5), buf[:5]) |
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| 186 | n/a | self.assertEqual(memio.readline(5), buf[5:10]) |
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| 187 | n/a | self.assertEqual(memio.readline(5), buf[10:15]) |
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| 188 | n/a | memio.seek(0) |
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| 189 | n/a | self.assertEqual(memio.readline(-1), buf) |
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| 190 | n/a | memio.seek(0) |
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| 191 | n/a | self.assertEqual(memio.readline(0), self.EOF) |
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| 192 | n/a | # Issue #24989: Buffer overread |
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| 193 | n/a | memio.seek(len(buf) * 2 + 1) |
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| 194 | n/a | self.assertEqual(memio.readline(), self.EOF) |
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| 195 | n/a | |
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| 196 | n/a | buf = self.buftype("1234567890\n") |
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| 197 | n/a | memio = self.ioclass((buf * 3)[:-1]) |
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| 198 | n/a | self.assertEqual(memio.readline(), buf) |
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| 199 | n/a | self.assertEqual(memio.readline(), buf) |
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| 200 | n/a | self.assertEqual(memio.readline(), buf[:-1]) |
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| 201 | n/a | self.assertEqual(memio.readline(), self.EOF) |
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| 202 | n/a | memio.seek(0) |
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| 203 | n/a | self.assertEqual(type(memio.readline()), type(buf)) |
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| 204 | n/a | self.assertEqual(memio.readline(), buf) |
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| 205 | n/a | self.assertRaises(TypeError, memio.readline, '') |
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| 206 | n/a | memio.close() |
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| 207 | n/a | self.assertRaises(ValueError, memio.readline) |
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| 208 | n/a | |
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| 209 | n/a | def test_readlines(self): |
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| 210 | n/a | buf = self.buftype("1234567890\n") |
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| 211 | n/a | memio = self.ioclass(buf * 10) |
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| 212 | n/a | |
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| 213 | n/a | self.assertEqual(memio.readlines(), [buf] * 10) |
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| 214 | n/a | memio.seek(5) |
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| 215 | n/a | self.assertEqual(memio.readlines(), [buf[5:]] + [buf] * 9) |
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| 216 | n/a | memio.seek(0) |
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| 217 | n/a | self.assertEqual(memio.readlines(15), [buf] * 2) |
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| 218 | n/a | memio.seek(0) |
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| 219 | n/a | self.assertEqual(memio.readlines(-1), [buf] * 10) |
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| 220 | n/a | memio.seek(0) |
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| 221 | n/a | self.assertEqual(memio.readlines(0), [buf] * 10) |
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| 222 | n/a | memio.seek(0) |
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| 223 | n/a | self.assertEqual(type(memio.readlines()[0]), type(buf)) |
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| 224 | n/a | memio.seek(0) |
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| 225 | n/a | self.assertEqual(memio.readlines(None), [buf] * 10) |
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| 226 | n/a | self.assertRaises(TypeError, memio.readlines, '') |
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| 227 | n/a | # Issue #24989: Buffer overread |
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| 228 | n/a | memio.seek(len(buf) * 10 + 1) |
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| 229 | n/a | self.assertEqual(memio.readlines(), []) |
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| 230 | n/a | memio.close() |
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| 231 | n/a | self.assertRaises(ValueError, memio.readlines) |
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| 232 | n/a | |
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| 233 | n/a | def test_iterator(self): |
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| 234 | n/a | buf = self.buftype("1234567890\n") |
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| 235 | n/a | memio = self.ioclass(buf * 10) |
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| 236 | n/a | |
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| 237 | n/a | self.assertEqual(iter(memio), memio) |
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| 238 | n/a | self.assertTrue(hasattr(memio, '__iter__')) |
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| 239 | n/a | self.assertTrue(hasattr(memio, '__next__')) |
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| 240 | n/a | i = 0 |
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| 241 | n/a | for line in memio: |
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| 242 | n/a | self.assertEqual(line, buf) |
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| 243 | n/a | i += 1 |
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| 244 | n/a | self.assertEqual(i, 10) |
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| 245 | n/a | memio.seek(0) |
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| 246 | n/a | i = 0 |
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| 247 | n/a | for line in memio: |
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| 248 | n/a | self.assertEqual(line, buf) |
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| 249 | n/a | i += 1 |
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| 250 | n/a | self.assertEqual(i, 10) |
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| 251 | n/a | # Issue #24989: Buffer overread |
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| 252 | n/a | memio.seek(len(buf) * 10 + 1) |
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| 253 | n/a | self.assertEqual(list(memio), []) |
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| 254 | n/a | memio = self.ioclass(buf * 2) |
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| 255 | n/a | memio.close() |
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| 256 | n/a | self.assertRaises(ValueError, memio.__next__) |
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| 257 | n/a | |
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| 258 | n/a | def test_getvalue(self): |
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| 259 | n/a | buf = self.buftype("1234567890") |
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| 260 | n/a | memio = self.ioclass(buf) |
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| 261 | n/a | |
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| 262 | n/a | self.assertEqual(memio.getvalue(), buf) |
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| 263 | n/a | memio.read() |
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| 264 | n/a | self.assertEqual(memio.getvalue(), buf) |
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| 265 | n/a | self.assertEqual(type(memio.getvalue()), type(buf)) |
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| 266 | n/a | memio = self.ioclass(buf * 1000) |
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| 267 | n/a | self.assertEqual(memio.getvalue()[-3:], self.buftype("890")) |
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| 268 | n/a | memio = self.ioclass(buf) |
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| 269 | n/a | memio.close() |
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| 270 | n/a | self.assertRaises(ValueError, memio.getvalue) |
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| 271 | n/a | |
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| 272 | n/a | def test_seek(self): |
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| 273 | n/a | buf = self.buftype("1234567890") |
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| 274 | n/a | memio = self.ioclass(buf) |
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| 275 | n/a | |
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| 276 | n/a | memio.read(5) |
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| 277 | n/a | self.assertRaises(ValueError, memio.seek, -1) |
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| 278 | n/a | self.assertRaises(ValueError, memio.seek, 1, -1) |
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| 279 | n/a | self.assertRaises(ValueError, memio.seek, 1, 3) |
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| 280 | n/a | self.assertEqual(memio.seek(0), 0) |
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| 281 | n/a | self.assertEqual(memio.seek(0, 0), 0) |
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| 282 | n/a | self.assertEqual(memio.read(), buf) |
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| 283 | n/a | self.assertEqual(memio.seek(3), 3) |
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| 284 | n/a | self.assertEqual(memio.seek(0, 1), 3) |
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| 285 | n/a | self.assertEqual(memio.read(), buf[3:]) |
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| 286 | n/a | self.assertEqual(memio.seek(len(buf)), len(buf)) |
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| 287 | n/a | self.assertEqual(memio.read(), self.EOF) |
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| 288 | n/a | memio.seek(len(buf) + 1) |
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| 289 | n/a | self.assertEqual(memio.read(), self.EOF) |
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| 290 | n/a | self.assertEqual(memio.seek(0, 2), len(buf)) |
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| 291 | n/a | self.assertEqual(memio.read(), self.EOF) |
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| 292 | n/a | memio.close() |
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| 293 | n/a | self.assertRaises(ValueError, memio.seek, 0) |
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| 294 | n/a | |
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| 295 | n/a | def test_overseek(self): |
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| 296 | n/a | buf = self.buftype("1234567890") |
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| 297 | n/a | memio = self.ioclass(buf) |
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| 298 | n/a | |
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| 299 | n/a | self.assertEqual(memio.seek(len(buf) + 1), 11) |
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| 300 | n/a | self.assertEqual(memio.read(), self.EOF) |
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| 301 | n/a | self.assertEqual(memio.tell(), 11) |
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| 302 | n/a | self.assertEqual(memio.getvalue(), buf) |
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| 303 | n/a | memio.write(self.EOF) |
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| 304 | n/a | self.assertEqual(memio.getvalue(), buf) |
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| 305 | n/a | memio.write(buf) |
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| 306 | n/a | self.assertEqual(memio.getvalue(), buf + self.buftype('\0') + buf) |
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| 307 | n/a | |
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| 308 | n/a | def test_tell(self): |
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| 309 | n/a | buf = self.buftype("1234567890") |
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| 310 | n/a | memio = self.ioclass(buf) |
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| 311 | n/a | |
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| 312 | n/a | self.assertEqual(memio.tell(), 0) |
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| 313 | n/a | memio.seek(5) |
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| 314 | n/a | self.assertEqual(memio.tell(), 5) |
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| 315 | n/a | memio.seek(10000) |
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| 316 | n/a | self.assertEqual(memio.tell(), 10000) |
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| 317 | n/a | memio.close() |
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| 318 | n/a | self.assertRaises(ValueError, memio.tell) |
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| 319 | n/a | |
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| 320 | n/a | def test_flush(self): |
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| 321 | n/a | buf = self.buftype("1234567890") |
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| 322 | n/a | memio = self.ioclass(buf) |
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| 323 | n/a | |
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| 324 | n/a | self.assertEqual(memio.flush(), None) |
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| 325 | n/a | |
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| 326 | n/a | def test_flags(self): |
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| 327 | n/a | memio = self.ioclass() |
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| 328 | n/a | |
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| 329 | n/a | self.assertEqual(memio.writable(), True) |
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| 330 | n/a | self.assertEqual(memio.readable(), True) |
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| 331 | n/a | self.assertEqual(memio.seekable(), True) |
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| 332 | n/a | self.assertEqual(memio.isatty(), False) |
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| 333 | n/a | self.assertEqual(memio.closed, False) |
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| 334 | n/a | memio.close() |
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| 335 | n/a | self.assertRaises(ValueError, memio.writable) |
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| 336 | n/a | self.assertRaises(ValueError, memio.readable) |
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| 337 | n/a | self.assertRaises(ValueError, memio.seekable) |
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| 338 | n/a | self.assertRaises(ValueError, memio.isatty) |
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| 339 | n/a | self.assertEqual(memio.closed, True) |
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| 340 | n/a | |
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| 341 | n/a | def test_subclassing(self): |
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| 342 | n/a | buf = self.buftype("1234567890") |
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| 343 | n/a | def test1(): |
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| 344 | n/a | class MemIO(self.ioclass): |
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| 345 | n/a | pass |
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| 346 | n/a | m = MemIO(buf) |
|---|
| 347 | n/a | return m.getvalue() |
|---|
| 348 | n/a | def test2(): |
|---|
| 349 | n/a | class MemIO(self.ioclass): |
|---|
| 350 | n/a | def __init__(me, a, b): |
|---|
| 351 | n/a | self.ioclass.__init__(me, a) |
|---|
| 352 | n/a | m = MemIO(buf, None) |
|---|
| 353 | n/a | return m.getvalue() |
|---|
| 354 | n/a | self.assertEqual(test1(), buf) |
|---|
| 355 | n/a | self.assertEqual(test2(), buf) |
|---|
| 356 | n/a | |
|---|
| 357 | n/a | def test_instance_dict_leak(self): |
|---|
| 358 | n/a | # Test case for issue #6242. |
|---|
| 359 | n/a | # This will be caught by regrtest.py -R if this leak. |
|---|
| 360 | n/a | for _ in range(100): |
|---|
| 361 | n/a | memio = self.ioclass() |
|---|
| 362 | n/a | memio.foo = 1 |
|---|
| 363 | n/a | |
|---|
| 364 | n/a | def test_pickling(self): |
|---|
| 365 | n/a | buf = self.buftype("1234567890") |
|---|
| 366 | n/a | memio = self.ioclass(buf) |
|---|
| 367 | n/a | memio.foo = 42 |
|---|
| 368 | n/a | memio.seek(2) |
|---|
| 369 | n/a | |
|---|
| 370 | n/a | class PickleTestMemIO(self.ioclass): |
|---|
| 371 | n/a | def __init__(me, initvalue, foo): |
|---|
| 372 | n/a | self.ioclass.__init__(me, initvalue) |
|---|
| 373 | n/a | me.foo = foo |
|---|
| 374 | n/a | # __getnewargs__ is undefined on purpose. This checks that PEP 307 |
|---|
| 375 | n/a | # is used to provide pickling support. |
|---|
| 376 | n/a | |
|---|
| 377 | n/a | # Pickle expects the class to be on the module level. Here we use a |
|---|
| 378 | n/a | # little hack to allow the PickleTestMemIO class to derive from |
|---|
| 379 | n/a | # self.ioclass without having to define all combinations explicitly on |
|---|
| 380 | n/a | # the module-level. |
|---|
| 381 | n/a | import __main__ |
|---|
| 382 | n/a | PickleTestMemIO.__module__ = '__main__' |
|---|
| 383 | n/a | PickleTestMemIO.__qualname__ = PickleTestMemIO.__name__ |
|---|
| 384 | n/a | __main__.PickleTestMemIO = PickleTestMemIO |
|---|
| 385 | n/a | submemio = PickleTestMemIO(buf, 80) |
|---|
| 386 | n/a | submemio.seek(2) |
|---|
| 387 | n/a | |
|---|
| 388 | n/a | # We only support pickle protocol 2 and onward since we use extended |
|---|
| 389 | n/a | # __reduce__ API of PEP 307 to provide pickling support. |
|---|
| 390 | n/a | for proto in range(2, pickle.HIGHEST_PROTOCOL + 1): |
|---|
| 391 | n/a | for obj in (memio, submemio): |
|---|
| 392 | n/a | obj2 = pickle.loads(pickle.dumps(obj, protocol=proto)) |
|---|
| 393 | n/a | self.assertEqual(obj.getvalue(), obj2.getvalue()) |
|---|
| 394 | n/a | self.assertEqual(obj.__class__, obj2.__class__) |
|---|
| 395 | n/a | self.assertEqual(obj.foo, obj2.foo) |
|---|
| 396 | n/a | self.assertEqual(obj.tell(), obj2.tell()) |
|---|
| 397 | n/a | obj2.close() |
|---|
| 398 | n/a | self.assertRaises(ValueError, pickle.dumps, obj2, proto) |
|---|
| 399 | n/a | del __main__.PickleTestMemIO |
|---|
| 400 | n/a | |
|---|
| 401 | n/a | |
|---|
| 402 | n/a | class PyBytesIOTest(MemoryTestMixin, MemorySeekTestMixin, unittest.TestCase): |
|---|
| 403 | n/a | # Test _pyio.BytesIO; class also inherited for testing C implementation |
|---|
| 404 | n/a | |
|---|
| 405 | n/a | UnsupportedOperation = pyio.UnsupportedOperation |
|---|
| 406 | n/a | |
|---|
| 407 | n/a | @staticmethod |
|---|
| 408 | n/a | def buftype(s): |
|---|
| 409 | n/a | return s.encode("ascii") |
|---|
| 410 | n/a | ioclass = pyio.BytesIO |
|---|
| 411 | n/a | EOF = b"" |
|---|
| 412 | n/a | |
|---|
| 413 | n/a | def test_getbuffer(self): |
|---|
| 414 | n/a | memio = self.ioclass(b"1234567890") |
|---|
| 415 | n/a | buf = memio.getbuffer() |
|---|
| 416 | n/a | self.assertEqual(bytes(buf), b"1234567890") |
|---|
| 417 | n/a | memio.seek(5) |
|---|
| 418 | n/a | buf = memio.getbuffer() |
|---|
| 419 | n/a | self.assertEqual(bytes(buf), b"1234567890") |
|---|
| 420 | n/a | # Trying to change the size of the BytesIO while a buffer is exported |
|---|
| 421 | n/a | # raises a BufferError. |
|---|
| 422 | n/a | self.assertRaises(BufferError, memio.write, b'x' * 100) |
|---|
| 423 | n/a | self.assertRaises(BufferError, memio.truncate) |
|---|
| 424 | n/a | self.assertRaises(BufferError, memio.close) |
|---|
| 425 | n/a | self.assertFalse(memio.closed) |
|---|
| 426 | n/a | # Mutating the buffer updates the BytesIO |
|---|
| 427 | n/a | buf[3:6] = b"abc" |
|---|
| 428 | n/a | self.assertEqual(bytes(buf), b"123abc7890") |
|---|
| 429 | n/a | self.assertEqual(memio.getvalue(), b"123abc7890") |
|---|
| 430 | n/a | # After the buffer gets released, we can resize and close the BytesIO |
|---|
| 431 | n/a | # again |
|---|
| 432 | n/a | del buf |
|---|
| 433 | n/a | support.gc_collect() |
|---|
| 434 | n/a | memio.truncate() |
|---|
| 435 | n/a | memio.close() |
|---|
| 436 | n/a | self.assertRaises(ValueError, memio.getbuffer) |
|---|
| 437 | n/a | |
|---|
| 438 | n/a | def test_read1(self): |
|---|
| 439 | n/a | buf = self.buftype("1234567890") |
|---|
| 440 | n/a | self.assertEqual(self.ioclass(buf).read1(), buf) |
|---|
| 441 | n/a | self.assertEqual(self.ioclass(buf).read1(-1), buf) |
|---|
| 442 | n/a | |
|---|
| 443 | n/a | def test_readinto(self): |
|---|
| 444 | n/a | buf = self.buftype("1234567890") |
|---|
| 445 | n/a | memio = self.ioclass(buf) |
|---|
| 446 | n/a | |
|---|
| 447 | n/a | b = bytearray(b"hello") |
|---|
| 448 | n/a | self.assertEqual(memio.readinto(b), 5) |
|---|
| 449 | n/a | self.assertEqual(b, b"12345") |
|---|
| 450 | n/a | self.assertEqual(memio.readinto(b), 5) |
|---|
| 451 | n/a | self.assertEqual(b, b"67890") |
|---|
| 452 | n/a | self.assertEqual(memio.readinto(b), 0) |
|---|
| 453 | n/a | self.assertEqual(b, b"67890") |
|---|
| 454 | n/a | b = bytearray(b"hello world") |
|---|
| 455 | n/a | memio.seek(0) |
|---|
| 456 | n/a | self.assertEqual(memio.readinto(b), 10) |
|---|
| 457 | n/a | self.assertEqual(b, b"1234567890d") |
|---|
| 458 | n/a | b = bytearray(b"") |
|---|
| 459 | n/a | memio.seek(0) |
|---|
| 460 | n/a | self.assertEqual(memio.readinto(b), 0) |
|---|
| 461 | n/a | self.assertEqual(b, b"") |
|---|
| 462 | n/a | self.assertRaises(TypeError, memio.readinto, '') |
|---|
| 463 | n/a | import array |
|---|
| 464 | n/a | a = array.array('b', b"hello world") |
|---|
| 465 | n/a | memio = self.ioclass(buf) |
|---|
| 466 | n/a | memio.readinto(a) |
|---|
| 467 | n/a | self.assertEqual(a.tobytes(), b"1234567890d") |
|---|
| 468 | n/a | memio.close() |
|---|
| 469 | n/a | self.assertRaises(ValueError, memio.readinto, b) |
|---|
| 470 | n/a | memio = self.ioclass(b"123") |
|---|
| 471 | n/a | b = bytearray() |
|---|
| 472 | n/a | memio.seek(42) |
|---|
| 473 | n/a | memio.readinto(b) |
|---|
| 474 | n/a | self.assertEqual(b, b"") |
|---|
| 475 | n/a | |
|---|
| 476 | n/a | def test_relative_seek(self): |
|---|
| 477 | n/a | buf = self.buftype("1234567890") |
|---|
| 478 | n/a | memio = self.ioclass(buf) |
|---|
| 479 | n/a | |
|---|
| 480 | n/a | self.assertEqual(memio.seek(-1, 1), 0) |
|---|
| 481 | n/a | self.assertEqual(memio.seek(3, 1), 3) |
|---|
| 482 | n/a | self.assertEqual(memio.seek(-4, 1), 0) |
|---|
| 483 | n/a | self.assertEqual(memio.seek(-1, 2), 9) |
|---|
| 484 | n/a | self.assertEqual(memio.seek(1, 1), 10) |
|---|
| 485 | n/a | self.assertEqual(memio.seek(1, 2), 11) |
|---|
| 486 | n/a | memio.seek(-3, 2) |
|---|
| 487 | n/a | self.assertEqual(memio.read(), buf[-3:]) |
|---|
| 488 | n/a | memio.seek(0) |
|---|
| 489 | n/a | memio.seek(1, 1) |
|---|
| 490 | n/a | self.assertEqual(memio.read(), buf[1:]) |
|---|
| 491 | n/a | |
|---|
| 492 | n/a | def test_unicode(self): |
|---|
| 493 | n/a | memio = self.ioclass() |
|---|
| 494 | n/a | |
|---|
| 495 | n/a | self.assertRaises(TypeError, self.ioclass, "1234567890") |
|---|
| 496 | n/a | self.assertRaises(TypeError, memio.write, "1234567890") |
|---|
| 497 | n/a | self.assertRaises(TypeError, memio.writelines, ["1234567890"]) |
|---|
| 498 | n/a | |
|---|
| 499 | n/a | def test_bytes_array(self): |
|---|
| 500 | n/a | buf = b"1234567890" |
|---|
| 501 | n/a | import array |
|---|
| 502 | n/a | a = array.array('b', list(buf)) |
|---|
| 503 | n/a | memio = self.ioclass(a) |
|---|
| 504 | n/a | self.assertEqual(memio.getvalue(), buf) |
|---|
| 505 | n/a | self.assertEqual(memio.write(a), 10) |
|---|
| 506 | n/a | self.assertEqual(memio.getvalue(), buf) |
|---|
| 507 | n/a | |
|---|
| 508 | n/a | def test_issue5449(self): |
|---|
| 509 | n/a | buf = self.buftype("1234567890") |
|---|
| 510 | n/a | self.ioclass(initial_bytes=buf) |
|---|
| 511 | n/a | self.assertRaises(TypeError, self.ioclass, buf, foo=None) |
|---|
| 512 | n/a | |
|---|
| 513 | n/a | |
|---|
| 514 | n/a | class TextIOTestMixin: |
|---|
| 515 | n/a | |
|---|
| 516 | n/a | def test_newlines_property(self): |
|---|
| 517 | n/a | memio = self.ioclass(newline=None) |
|---|
| 518 | n/a | # The C StringIO decodes newlines in write() calls, but the Python |
|---|
| 519 | n/a | # implementation only does when reading. This function forces them to |
|---|
| 520 | n/a | # be decoded for testing. |
|---|
| 521 | n/a | def force_decode(): |
|---|
| 522 | n/a | memio.seek(0) |
|---|
| 523 | n/a | memio.read() |
|---|
| 524 | n/a | self.assertEqual(memio.newlines, None) |
|---|
| 525 | n/a | memio.write("a\n") |
|---|
| 526 | n/a | force_decode() |
|---|
| 527 | n/a | self.assertEqual(memio.newlines, "\n") |
|---|
| 528 | n/a | memio.write("b\r\n") |
|---|
| 529 | n/a | force_decode() |
|---|
| 530 | n/a | self.assertEqual(memio.newlines, ("\n", "\r\n")) |
|---|
| 531 | n/a | memio.write("c\rd") |
|---|
| 532 | n/a | force_decode() |
|---|
| 533 | n/a | self.assertEqual(memio.newlines, ("\r", "\n", "\r\n")) |
|---|
| 534 | n/a | |
|---|
| 535 | n/a | def test_relative_seek(self): |
|---|
| 536 | n/a | memio = self.ioclass() |
|---|
| 537 | n/a | |
|---|
| 538 | n/a | self.assertRaises(OSError, memio.seek, -1, 1) |
|---|
| 539 | n/a | self.assertRaises(OSError, memio.seek, 3, 1) |
|---|
| 540 | n/a | self.assertRaises(OSError, memio.seek, -3, 1) |
|---|
| 541 | n/a | self.assertRaises(OSError, memio.seek, -1, 2) |
|---|
| 542 | n/a | self.assertRaises(OSError, memio.seek, 1, 1) |
|---|
| 543 | n/a | self.assertRaises(OSError, memio.seek, 1, 2) |
|---|
| 544 | n/a | |
|---|
| 545 | n/a | def test_textio_properties(self): |
|---|
| 546 | n/a | memio = self.ioclass() |
|---|
| 547 | n/a | |
|---|
| 548 | n/a | # These are just dummy values but we nevertheless check them for fear |
|---|
| 549 | n/a | # of unexpected breakage. |
|---|
| 550 | n/a | self.assertIsNone(memio.encoding) |
|---|
| 551 | n/a | self.assertIsNone(memio.errors) |
|---|
| 552 | n/a | self.assertFalse(memio.line_buffering) |
|---|
| 553 | n/a | |
|---|
| 554 | n/a | def test_newline_default(self): |
|---|
| 555 | n/a | memio = self.ioclass("a\nb\r\nc\rd") |
|---|
| 556 | n/a | self.assertEqual(list(memio), ["a\n", "b\r\n", "c\rd"]) |
|---|
| 557 | n/a | self.assertEqual(memio.getvalue(), "a\nb\r\nc\rd") |
|---|
| 558 | n/a | |
|---|
| 559 | n/a | memio = self.ioclass() |
|---|
| 560 | n/a | self.assertEqual(memio.write("a\nb\r\nc\rd"), 8) |
|---|
| 561 | n/a | memio.seek(0) |
|---|
| 562 | n/a | self.assertEqual(list(memio), ["a\n", "b\r\n", "c\rd"]) |
|---|
| 563 | n/a | self.assertEqual(memio.getvalue(), "a\nb\r\nc\rd") |
|---|
| 564 | n/a | |
|---|
| 565 | n/a | def test_newline_none(self): |
|---|
| 566 | n/a | # newline=None |
|---|
| 567 | n/a | memio = self.ioclass("a\nb\r\nc\rd", newline=None) |
|---|
| 568 | n/a | self.assertEqual(list(memio), ["a\n", "b\n", "c\n", "d"]) |
|---|
| 569 | n/a | memio.seek(0) |
|---|
| 570 | n/a | self.assertEqual(memio.read(1), "a") |
|---|
| 571 | n/a | self.assertEqual(memio.read(2), "\nb") |
|---|
| 572 | n/a | self.assertEqual(memio.read(2), "\nc") |
|---|
| 573 | n/a | self.assertEqual(memio.read(1), "\n") |
|---|
| 574 | n/a | self.assertEqual(memio.getvalue(), "a\nb\nc\nd") |
|---|
| 575 | n/a | |
|---|
| 576 | n/a | memio = self.ioclass(newline=None) |
|---|
| 577 | n/a | self.assertEqual(2, memio.write("a\n")) |
|---|
| 578 | n/a | self.assertEqual(3, memio.write("b\r\n")) |
|---|
| 579 | n/a | self.assertEqual(3, memio.write("c\rd")) |
|---|
| 580 | n/a | memio.seek(0) |
|---|
| 581 | n/a | self.assertEqual(memio.read(), "a\nb\nc\nd") |
|---|
| 582 | n/a | self.assertEqual(memio.getvalue(), "a\nb\nc\nd") |
|---|
| 583 | n/a | |
|---|
| 584 | n/a | memio = self.ioclass("a\r\nb", newline=None) |
|---|
| 585 | n/a | self.assertEqual(memio.read(3), "a\nb") |
|---|
| 586 | n/a | |
|---|
| 587 | n/a | def test_newline_empty(self): |
|---|
| 588 | n/a | # newline="" |
|---|
| 589 | n/a | memio = self.ioclass("a\nb\r\nc\rd", newline="") |
|---|
| 590 | n/a | self.assertEqual(list(memio), ["a\n", "b\r\n", "c\r", "d"]) |
|---|
| 591 | n/a | memio.seek(0) |
|---|
| 592 | n/a | self.assertEqual(memio.read(4), "a\nb\r") |
|---|
| 593 | n/a | self.assertEqual(memio.read(2), "\nc") |
|---|
| 594 | n/a | self.assertEqual(memio.read(1), "\r") |
|---|
| 595 | n/a | self.assertEqual(memio.getvalue(), "a\nb\r\nc\rd") |
|---|
| 596 | n/a | |
|---|
| 597 | n/a | memio = self.ioclass(newline="") |
|---|
| 598 | n/a | self.assertEqual(2, memio.write("a\n")) |
|---|
| 599 | n/a | self.assertEqual(2, memio.write("b\r")) |
|---|
| 600 | n/a | self.assertEqual(2, memio.write("\nc")) |
|---|
| 601 | n/a | self.assertEqual(2, memio.write("\rd")) |
|---|
| 602 | n/a | memio.seek(0) |
|---|
| 603 | n/a | self.assertEqual(list(memio), ["a\n", "b\r\n", "c\r", "d"]) |
|---|
| 604 | n/a | self.assertEqual(memio.getvalue(), "a\nb\r\nc\rd") |
|---|
| 605 | n/a | |
|---|
| 606 | n/a | def test_newline_lf(self): |
|---|
| 607 | n/a | # newline="\n" |
|---|
| 608 | n/a | memio = self.ioclass("a\nb\r\nc\rd", newline="\n") |
|---|
| 609 | n/a | self.assertEqual(list(memio), ["a\n", "b\r\n", "c\rd"]) |
|---|
| 610 | n/a | self.assertEqual(memio.getvalue(), "a\nb\r\nc\rd") |
|---|
| 611 | n/a | |
|---|
| 612 | n/a | memio = self.ioclass(newline="\n") |
|---|
| 613 | n/a | self.assertEqual(memio.write("a\nb\r\nc\rd"), 8) |
|---|
| 614 | n/a | memio.seek(0) |
|---|
| 615 | n/a | self.assertEqual(list(memio), ["a\n", "b\r\n", "c\rd"]) |
|---|
| 616 | n/a | self.assertEqual(memio.getvalue(), "a\nb\r\nc\rd") |
|---|
| 617 | n/a | |
|---|
| 618 | n/a | def test_newline_cr(self): |
|---|
| 619 | n/a | # newline="\r" |
|---|
| 620 | n/a | memio = self.ioclass("a\nb\r\nc\rd", newline="\r") |
|---|
| 621 | n/a | self.assertEqual(memio.read(), "a\rb\r\rc\rd") |
|---|
| 622 | n/a | memio.seek(0) |
|---|
| 623 | n/a | self.assertEqual(list(memio), ["a\r", "b\r", "\r", "c\r", "d"]) |
|---|
| 624 | n/a | self.assertEqual(memio.getvalue(), "a\rb\r\rc\rd") |
|---|
| 625 | n/a | |
|---|
| 626 | n/a | memio = self.ioclass(newline="\r") |
|---|
| 627 | n/a | self.assertEqual(memio.write("a\nb\r\nc\rd"), 8) |
|---|
| 628 | n/a | memio.seek(0) |
|---|
| 629 | n/a | self.assertEqual(list(memio), ["a\r", "b\r", "\r", "c\r", "d"]) |
|---|
| 630 | n/a | memio.seek(0) |
|---|
| 631 | n/a | self.assertEqual(memio.readlines(), ["a\r", "b\r", "\r", "c\r", "d"]) |
|---|
| 632 | n/a | self.assertEqual(memio.getvalue(), "a\rb\r\rc\rd") |
|---|
| 633 | n/a | |
|---|
| 634 | n/a | def test_newline_crlf(self): |
|---|
| 635 | n/a | # newline="\r\n" |
|---|
| 636 | n/a | memio = self.ioclass("a\nb\r\nc\rd", newline="\r\n") |
|---|
| 637 | n/a | self.assertEqual(memio.read(), "a\r\nb\r\r\nc\rd") |
|---|
| 638 | n/a | memio.seek(0) |
|---|
| 639 | n/a | self.assertEqual(list(memio), ["a\r\n", "b\r\r\n", "c\rd"]) |
|---|
| 640 | n/a | memio.seek(0) |
|---|
| 641 | n/a | self.assertEqual(memio.readlines(), ["a\r\n", "b\r\r\n", "c\rd"]) |
|---|
| 642 | n/a | self.assertEqual(memio.getvalue(), "a\r\nb\r\r\nc\rd") |
|---|
| 643 | n/a | |
|---|
| 644 | n/a | memio = self.ioclass(newline="\r\n") |
|---|
| 645 | n/a | self.assertEqual(memio.write("a\nb\r\nc\rd"), 8) |
|---|
| 646 | n/a | memio.seek(0) |
|---|
| 647 | n/a | self.assertEqual(list(memio), ["a\r\n", "b\r\r\n", "c\rd"]) |
|---|
| 648 | n/a | self.assertEqual(memio.getvalue(), "a\r\nb\r\r\nc\rd") |
|---|
| 649 | n/a | |
|---|
| 650 | n/a | def test_issue5265(self): |
|---|
| 651 | n/a | # StringIO can duplicate newlines in universal newlines mode |
|---|
| 652 | n/a | memio = self.ioclass("a\r\nb\r\n", newline=None) |
|---|
| 653 | n/a | self.assertEqual(memio.read(5), "a\nb\n") |
|---|
| 654 | n/a | self.assertEqual(memio.getvalue(), "a\nb\n") |
|---|
| 655 | n/a | |
|---|
| 656 | n/a | def test_newline_argument(self): |
|---|
| 657 | n/a | self.assertRaises(TypeError, self.ioclass, newline=b"\n") |
|---|
| 658 | n/a | self.assertRaises(ValueError, self.ioclass, newline="error") |
|---|
| 659 | n/a | # These should not raise an error |
|---|
| 660 | n/a | for newline in (None, "", "\n", "\r", "\r\n"): |
|---|
| 661 | n/a | self.ioclass(newline=newline) |
|---|
| 662 | n/a | |
|---|
| 663 | n/a | |
|---|
| 664 | n/a | class PyStringIOTest(MemoryTestMixin, MemorySeekTestMixin, |
|---|
| 665 | n/a | TextIOTestMixin, unittest.TestCase): |
|---|
| 666 | n/a | buftype = str |
|---|
| 667 | n/a | ioclass = pyio.StringIO |
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| 668 | n/a | UnsupportedOperation = pyio.UnsupportedOperation |
|---|
| 669 | n/a | EOF = "" |
|---|
| 670 | n/a | |
|---|
| 671 | n/a | def test_lone_surrogates(self): |
|---|
| 672 | n/a | # Issue #20424 |
|---|
| 673 | n/a | memio = self.ioclass('\ud800') |
|---|
| 674 | n/a | self.assertEqual(memio.read(), '\ud800') |
|---|
| 675 | n/a | |
|---|
| 676 | n/a | memio = self.ioclass() |
|---|
| 677 | n/a | memio.write('\ud800') |
|---|
| 678 | n/a | self.assertEqual(memio.getvalue(), '\ud800') |
|---|
| 679 | n/a | |
|---|
| 680 | n/a | |
|---|
| 681 | n/a | class PyStringIOPickleTest(TextIOTestMixin, unittest.TestCase): |
|---|
| 682 | n/a | """Test if pickle restores properly the internal state of StringIO. |
|---|
| 683 | n/a | """ |
|---|
| 684 | n/a | buftype = str |
|---|
| 685 | n/a | UnsupportedOperation = pyio.UnsupportedOperation |
|---|
| 686 | n/a | EOF = "" |
|---|
| 687 | n/a | |
|---|
| 688 | n/a | class ioclass(pyio.StringIO): |
|---|
| 689 | n/a | def __new__(cls, *args, **kwargs): |
|---|
| 690 | n/a | return pickle.loads(pickle.dumps(pyio.StringIO(*args, **kwargs))) |
|---|
| 691 | n/a | def __init__(self, *args, **kwargs): |
|---|
| 692 | n/a | pass |
|---|
| 693 | n/a | |
|---|
| 694 | n/a | |
|---|
| 695 | n/a | class CBytesIOTest(PyBytesIOTest): |
|---|
| 696 | n/a | ioclass = io.BytesIO |
|---|
| 697 | n/a | UnsupportedOperation = io.UnsupportedOperation |
|---|
| 698 | n/a | |
|---|
| 699 | n/a | def test_getstate(self): |
|---|
| 700 | n/a | memio = self.ioclass() |
|---|
| 701 | n/a | state = memio.__getstate__() |
|---|
| 702 | n/a | self.assertEqual(len(state), 3) |
|---|
| 703 | n/a | bytearray(state[0]) # Check if state[0] supports the buffer interface. |
|---|
| 704 | n/a | self.assertIsInstance(state[1], int) |
|---|
| 705 | n/a | if state[2] is not None: |
|---|
| 706 | n/a | self.assertIsInstance(state[2], dict) |
|---|
| 707 | n/a | memio.close() |
|---|
| 708 | n/a | self.assertRaises(ValueError, memio.__getstate__) |
|---|
| 709 | n/a | |
|---|
| 710 | n/a | def test_setstate(self): |
|---|
| 711 | n/a | # This checks whether __setstate__ does proper input validation. |
|---|
| 712 | n/a | memio = self.ioclass() |
|---|
| 713 | n/a | memio.__setstate__((b"no error", 0, None)) |
|---|
| 714 | n/a | memio.__setstate__((bytearray(b"no error"), 0, None)) |
|---|
| 715 | n/a | memio.__setstate__((b"no error", 0, {'spam': 3})) |
|---|
| 716 | n/a | self.assertRaises(ValueError, memio.__setstate__, (b"", -1, None)) |
|---|
| 717 | n/a | self.assertRaises(TypeError, memio.__setstate__, ("unicode", 0, None)) |
|---|
| 718 | n/a | self.assertRaises(TypeError, memio.__setstate__, (b"", 0.0, None)) |
|---|
| 719 | n/a | self.assertRaises(TypeError, memio.__setstate__, (b"", 0, 0)) |
|---|
| 720 | n/a | self.assertRaises(TypeError, memio.__setstate__, (b"len-test", 0)) |
|---|
| 721 | n/a | self.assertRaises(TypeError, memio.__setstate__) |
|---|
| 722 | n/a | self.assertRaises(TypeError, memio.__setstate__, 0) |
|---|
| 723 | n/a | memio.close() |
|---|
| 724 | n/a | self.assertRaises(ValueError, memio.__setstate__, (b"closed", 0, None)) |
|---|
| 725 | n/a | |
|---|
| 726 | n/a | check_sizeof = support.check_sizeof |
|---|
| 727 | n/a | |
|---|
| 728 | n/a | @support.cpython_only |
|---|
| 729 | n/a | def test_sizeof(self): |
|---|
| 730 | n/a | basesize = support.calcobjsize('P2n2Pn') |
|---|
| 731 | n/a | check = self.check_sizeof |
|---|
| 732 | n/a | self.assertEqual(object.__sizeof__(io.BytesIO()), basesize) |
|---|
| 733 | n/a | check(io.BytesIO(), basesize ) |
|---|
| 734 | n/a | check(io.BytesIO(b'a' * 1000), basesize + sys.getsizeof(b'a' * 1000)) |
|---|
| 735 | n/a | |
|---|
| 736 | n/a | # Various tests of copy-on-write behaviour for BytesIO. |
|---|
| 737 | n/a | |
|---|
| 738 | n/a | def _test_cow_mutation(self, mutation): |
|---|
| 739 | n/a | # Common code for all BytesIO copy-on-write mutation tests. |
|---|
| 740 | n/a | imm = b' ' * 1024 |
|---|
| 741 | n/a | old_rc = sys.getrefcount(imm) |
|---|
| 742 | n/a | memio = self.ioclass(imm) |
|---|
| 743 | n/a | self.assertEqual(sys.getrefcount(imm), old_rc + 1) |
|---|
| 744 | n/a | mutation(memio) |
|---|
| 745 | n/a | self.assertEqual(sys.getrefcount(imm), old_rc) |
|---|
| 746 | n/a | |
|---|
| 747 | n/a | @support.cpython_only |
|---|
| 748 | n/a | def test_cow_truncate(self): |
|---|
| 749 | n/a | # Ensure truncate causes a copy. |
|---|
| 750 | n/a | def mutation(memio): |
|---|
| 751 | n/a | memio.truncate(1) |
|---|
| 752 | n/a | self._test_cow_mutation(mutation) |
|---|
| 753 | n/a | |
|---|
| 754 | n/a | @support.cpython_only |
|---|
| 755 | n/a | def test_cow_write(self): |
|---|
| 756 | n/a | # Ensure write that would not cause a resize still results in a copy. |
|---|
| 757 | n/a | def mutation(memio): |
|---|
| 758 | n/a | memio.seek(0) |
|---|
| 759 | n/a | memio.write(b'foo') |
|---|
| 760 | n/a | self._test_cow_mutation(mutation) |
|---|
| 761 | n/a | |
|---|
| 762 | n/a | @support.cpython_only |
|---|
| 763 | n/a | def test_cow_setstate(self): |
|---|
| 764 | n/a | # __setstate__ should cause buffer to be released. |
|---|
| 765 | n/a | memio = self.ioclass(b'foooooo') |
|---|
| 766 | n/a | state = memio.__getstate__() |
|---|
| 767 | n/a | def mutation(memio): |
|---|
| 768 | n/a | memio.__setstate__(state) |
|---|
| 769 | n/a | self._test_cow_mutation(mutation) |
|---|
| 770 | n/a | |
|---|
| 771 | n/a | @support.cpython_only |
|---|
| 772 | n/a | def test_cow_mutable(self): |
|---|
| 773 | n/a | # BytesIO should accept only Bytes for copy-on-write sharing, since |
|---|
| 774 | n/a | # arbitrary buffer-exporting objects like bytearray() aren't guaranteed |
|---|
| 775 | n/a | # to be immutable. |
|---|
| 776 | n/a | ba = bytearray(1024) |
|---|
| 777 | n/a | old_rc = sys.getrefcount(ba) |
|---|
| 778 | n/a | memio = self.ioclass(ba) |
|---|
| 779 | n/a | self.assertEqual(sys.getrefcount(ba), old_rc) |
|---|
| 780 | n/a | |
|---|
| 781 | n/a | class CStringIOTest(PyStringIOTest): |
|---|
| 782 | n/a | ioclass = io.StringIO |
|---|
| 783 | n/a | UnsupportedOperation = io.UnsupportedOperation |
|---|
| 784 | n/a | |
|---|
| 785 | n/a | # XXX: For the Python version of io.StringIO, this is highly |
|---|
| 786 | n/a | # dependent on the encoding used for the underlying buffer. |
|---|
| 787 | n/a | def test_widechar(self): |
|---|
| 788 | n/a | buf = self.buftype("\U0002030a\U00020347") |
|---|
| 789 | n/a | memio = self.ioclass(buf) |
|---|
| 790 | n/a | |
|---|
| 791 | n/a | self.assertEqual(memio.getvalue(), buf) |
|---|
| 792 | n/a | self.assertEqual(memio.write(buf), len(buf)) |
|---|
| 793 | n/a | self.assertEqual(memio.tell(), len(buf)) |
|---|
| 794 | n/a | self.assertEqual(memio.getvalue(), buf) |
|---|
| 795 | n/a | self.assertEqual(memio.write(buf), len(buf)) |
|---|
| 796 | n/a | self.assertEqual(memio.tell(), len(buf) * 2) |
|---|
| 797 | n/a | self.assertEqual(memio.getvalue(), buf + buf) |
|---|
| 798 | n/a | |
|---|
| 799 | n/a | def test_getstate(self): |
|---|
| 800 | n/a | memio = self.ioclass() |
|---|
| 801 | n/a | state = memio.__getstate__() |
|---|
| 802 | n/a | self.assertEqual(len(state), 4) |
|---|
| 803 | n/a | self.assertIsInstance(state[0], str) |
|---|
| 804 | n/a | self.assertIsInstance(state[1], str) |
|---|
| 805 | n/a | self.assertIsInstance(state[2], int) |
|---|
| 806 | n/a | if state[3] is not None: |
|---|
| 807 | n/a | self.assertIsInstance(state[3], dict) |
|---|
| 808 | n/a | memio.close() |
|---|
| 809 | n/a | self.assertRaises(ValueError, memio.__getstate__) |
|---|
| 810 | n/a | |
|---|
| 811 | n/a | def test_setstate(self): |
|---|
| 812 | n/a | # This checks whether __setstate__ does proper input validation. |
|---|
| 813 | n/a | memio = self.ioclass() |
|---|
| 814 | n/a | memio.__setstate__(("no error", "\n", 0, None)) |
|---|
| 815 | n/a | memio.__setstate__(("no error", "", 0, {'spam': 3})) |
|---|
| 816 | n/a | self.assertRaises(ValueError, memio.__setstate__, ("", "f", 0, None)) |
|---|
| 817 | n/a | self.assertRaises(ValueError, memio.__setstate__, ("", "", -1, None)) |
|---|
| 818 | n/a | self.assertRaises(TypeError, memio.__setstate__, (b"", "", 0, None)) |
|---|
| 819 | n/a | self.assertRaises(TypeError, memio.__setstate__, ("", b"", 0, None)) |
|---|
| 820 | n/a | self.assertRaises(TypeError, memio.__setstate__, ("", "", 0.0, None)) |
|---|
| 821 | n/a | self.assertRaises(TypeError, memio.__setstate__, ("", "", 0, 0)) |
|---|
| 822 | n/a | self.assertRaises(TypeError, memio.__setstate__, ("len-test", 0)) |
|---|
| 823 | n/a | self.assertRaises(TypeError, memio.__setstate__) |
|---|
| 824 | n/a | self.assertRaises(TypeError, memio.__setstate__, 0) |
|---|
| 825 | n/a | memio.close() |
|---|
| 826 | n/a | self.assertRaises(ValueError, memio.__setstate__, ("closed", "", 0, None)) |
|---|
| 827 | n/a | |
|---|
| 828 | n/a | |
|---|
| 829 | n/a | class CStringIOPickleTest(PyStringIOPickleTest): |
|---|
| 830 | n/a | UnsupportedOperation = io.UnsupportedOperation |
|---|
| 831 | n/a | |
|---|
| 832 | n/a | class ioclass(io.StringIO): |
|---|
| 833 | n/a | def __new__(cls, *args, **kwargs): |
|---|
| 834 | n/a | return pickle.loads(pickle.dumps(io.StringIO(*args, **kwargs))) |
|---|
| 835 | n/a | def __init__(self, *args, **kwargs): |
|---|
| 836 | n/a | pass |
|---|
| 837 | n/a | |
|---|
| 838 | n/a | |
|---|
| 839 | n/a | if __name__ == '__main__': |
|---|
| 840 | n/a | unittest.main() |
|---|
