Mercurial > hg
annotate contrib/python-zstandard/tests/test_buffer_util.py @ 51838:3b8d92f71d92 default tip
archive: defer opening the output until a file is matched
Before, if no file is matched, an error is thrown, but the archive is
created anyway. When using hgweb, an error 500 is returned as the
response body already exists when the error is seen.
Afterwards, the archive is created before the first match is emitted.
If no match is found, no archive is created. This is more consistent
behavior as an empty archive is not a representable in all output
formats, e.g. tar archives.
author | Joerg Sonnenberger <joerg@bec.de> |
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date | Wed, 15 Nov 2023 22:11:34 +0100 |
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1 import struct |
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2 import unittest |
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3 |
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4 import zstandard as zstd |
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5 |
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6 from .common import TestCase |
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7 |
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8 ss = struct.Struct("=QQ") |
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9 |
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10 |
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11 class TestBufferWithSegments(TestCase): |
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12 def test_arguments(self): |
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13 if not hasattr(zstd, "BufferWithSegments"): |
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14 self.skipTest("BufferWithSegments not available") |
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15 |
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16 with self.assertRaises(TypeError): |
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17 zstd.BufferWithSegments() |
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18 |
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19 with self.assertRaises(TypeError): |
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20 zstd.BufferWithSegments(b"foo") |
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21 |
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22 # Segments data should be a multiple of 16. |
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23 with self.assertRaisesRegex( |
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24 ValueError, "segments array size is not a multiple of 16" |
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25 ): |
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26 zstd.BufferWithSegments(b"foo", b"\x00\x00") |
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27 |
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28 def test_invalid_offset(self): |
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29 if not hasattr(zstd, "BufferWithSegments"): |
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30 self.skipTest("BufferWithSegments not available") |
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31 |
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32 with self.assertRaisesRegex( |
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33 ValueError, "offset within segments array references memory" |
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34 ): |
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35 zstd.BufferWithSegments(b"foo", ss.pack(0, 4)) |
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36 |
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37 def test_invalid_getitem(self): |
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38 if not hasattr(zstd, "BufferWithSegments"): |
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39 self.skipTest("BufferWithSegments not available") |
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40 |
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41 b = zstd.BufferWithSegments(b"foo", ss.pack(0, 3)) |
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42 |
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43 with self.assertRaisesRegex(IndexError, "offset must be non-negative"): |
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44 test = b[-10] |
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45 |
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46 with self.assertRaisesRegex(IndexError, "offset must be less than 1"): |
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47 test = b[1] |
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48 |
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49 with self.assertRaisesRegex(IndexError, "offset must be less than 1"): |
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50 test = b[2] |
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51 |
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52 def test_single(self): |
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53 if not hasattr(zstd, "BufferWithSegments"): |
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54 self.skipTest("BufferWithSegments not available") |
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55 |
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56 b = zstd.BufferWithSegments(b"foo", ss.pack(0, 3)) |
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57 self.assertEqual(len(b), 1) |
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58 self.assertEqual(b.size, 3) |
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59 self.assertEqual(b.tobytes(), b"foo") |
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60 |
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61 self.assertEqual(len(b[0]), 3) |
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62 self.assertEqual(b[0].offset, 0) |
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63 self.assertEqual(b[0].tobytes(), b"foo") |
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64 |
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65 def test_multiple(self): |
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66 if not hasattr(zstd, "BufferWithSegments"): |
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67 self.skipTest("BufferWithSegments not available") |
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68 |
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69 b = zstd.BufferWithSegments( |
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70 b"foofooxfooxy", |
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71 b"".join([ss.pack(0, 3), ss.pack(3, 4), ss.pack(7, 5)]), |
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72 ) |
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73 self.assertEqual(len(b), 3) |
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74 self.assertEqual(b.size, 12) |
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75 self.assertEqual(b.tobytes(), b"foofooxfooxy") |
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76 |
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77 self.assertEqual(b[0].tobytes(), b"foo") |
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78 self.assertEqual(b[1].tobytes(), b"foox") |
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79 self.assertEqual(b[2].tobytes(), b"fooxy") |
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80 |
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81 |
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82 class TestBufferWithSegmentsCollection(TestCase): |
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83 def test_empty_constructor(self): |
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84 if not hasattr(zstd, "BufferWithSegmentsCollection"): |
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85 self.skipTest("BufferWithSegmentsCollection not available") |
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86 |
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87 with self.assertRaisesRegex( |
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88 ValueError, "must pass at least 1 argument" |
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89 ): |
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90 zstd.BufferWithSegmentsCollection() |
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91 |
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92 def test_argument_validation(self): |
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93 if not hasattr(zstd, "BufferWithSegmentsCollection"): |
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94 self.skipTest("BufferWithSegmentsCollection not available") |
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95 |
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96 with self.assertRaisesRegex( |
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97 TypeError, "arguments must be BufferWithSegments" |
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98 ): |
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99 zstd.BufferWithSegmentsCollection(None) |
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100 |
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101 with self.assertRaisesRegex( |
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102 TypeError, "arguments must be BufferWithSegments" |
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103 ): |
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104 zstd.BufferWithSegmentsCollection( |
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105 zstd.BufferWithSegments(b"foo", ss.pack(0, 3)), None |
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106 ) |
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107 |
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108 with self.assertRaisesRegex( |
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109 ValueError, "ZstdBufferWithSegments cannot be empty" |
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110 ): |
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111 zstd.BufferWithSegmentsCollection(zstd.BufferWithSegments(b"", b"")) |
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112 |
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113 def test_length(self): |
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114 if not hasattr(zstd, "BufferWithSegmentsCollection"): |
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115 self.skipTest("BufferWithSegmentsCollection not available") |
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116 |
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117 b1 = zstd.BufferWithSegments(b"foo", ss.pack(0, 3)) |
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118 b2 = zstd.BufferWithSegments( |
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119 b"barbaz", b"".join([ss.pack(0, 3), ss.pack(3, 3)]) |
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120 ) |
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121 |
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122 c = zstd.BufferWithSegmentsCollection(b1) |
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123 self.assertEqual(len(c), 1) |
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124 self.assertEqual(c.size(), 3) |
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125 |
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126 c = zstd.BufferWithSegmentsCollection(b2) |
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127 self.assertEqual(len(c), 2) |
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128 self.assertEqual(c.size(), 6) |
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129 |
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130 c = zstd.BufferWithSegmentsCollection(b1, b2) |
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131 self.assertEqual(len(c), 3) |
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132 self.assertEqual(c.size(), 9) |
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133 |
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134 def test_getitem(self): |
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135 if not hasattr(zstd, "BufferWithSegmentsCollection"): |
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136 self.skipTest("BufferWithSegmentsCollection not available") |
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137 |
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138 b1 = zstd.BufferWithSegments(b"foo", ss.pack(0, 3)) |
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139 b2 = zstd.BufferWithSegments( |
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140 b"barbaz", b"".join([ss.pack(0, 3), ss.pack(3, 3)]) |
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141 ) |
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142 |
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143 c = zstd.BufferWithSegmentsCollection(b1, b2) |
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144 |
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145 with self.assertRaisesRegex(IndexError, "offset must be less than 3"): |
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146 c[3] |
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147 |
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148 with self.assertRaisesRegex(IndexError, "offset must be less than 3"): |
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149 c[4] |
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150 |
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151 self.assertEqual(c[0].tobytes(), b"foo") |
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152 self.assertEqual(c[1].tobytes(), b"bar") |
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153 self.assertEqual(c[2].tobytes(), b"baz") |