Mercurial > hg
annotate tests/test-cappedreader.py @ 46858:85e3a630cad9
revlog: move the details of revlog "v2" index inside revlog.utils.constants
the revlog module is quite large and this kind of format information would handy
for other module. So let us start to gather this information about the format in
a more appropriate place.
We update various reference to this information to use the new "source of truth"
in the process.
Differential Revision: https://phab.mercurial-scm.org/D10305
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
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date | Mon, 05 Apr 2021 12:21:12 +0200 |
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children | 6000f5b25c9b |
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1 from __future__ import absolute_import, print_function |
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2 |
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3 import io |
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4 import unittest |
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5 |
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6 from mercurial import util |
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7 |
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8 |
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9 class CappedReaderTests(unittest.TestCase): |
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10 def testreadfull(self): |
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11 source = io.BytesIO(b'x' * 100) |
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12 |
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13 reader = util.cappedreader(source, 10) |
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14 res = reader.read(10) |
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15 self.assertEqual(res, b'x' * 10) |
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16 self.assertEqual(source.tell(), 10) |
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17 source.seek(0) |
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18 |
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19 reader = util.cappedreader(source, 15) |
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20 res = reader.read(16) |
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21 self.assertEqual(res, b'x' * 15) |
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22 self.assertEqual(source.tell(), 15) |
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23 source.seek(0) |
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24 |
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25 reader = util.cappedreader(source, 100) |
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26 res = reader.read(100) |
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27 self.assertEqual(res, b'x' * 100) |
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28 self.assertEqual(source.tell(), 100) |
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29 source.seek(0) |
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30 |
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31 reader = util.cappedreader(source, 50) |
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32 res = reader.read() |
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33 self.assertEqual(res, b'x' * 50) |
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34 self.assertEqual(source.tell(), 50) |
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35 source.seek(0) |
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36 |
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37 def testreadnegative(self): |
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38 source = io.BytesIO(b'x' * 100) |
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39 |
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40 reader = util.cappedreader(source, 20) |
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41 res = reader.read(-1) |
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42 self.assertEqual(res, b'x' * 20) |
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43 self.assertEqual(source.tell(), 20) |
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44 source.seek(0) |
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45 |
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46 reader = util.cappedreader(source, 100) |
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47 res = reader.read(-1) |
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48 self.assertEqual(res, b'x' * 100) |
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49 self.assertEqual(source.tell(), 100) |
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50 source.seek(0) |
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51 |
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52 def testreadmultiple(self): |
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53 source = io.BytesIO(b'x' * 100) |
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54 |
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55 reader = util.cappedreader(source, 10) |
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56 for i in range(10): |
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57 res = reader.read(1) |
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58 self.assertEqual(res, b'x') |
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59 self.assertEqual(source.tell(), i + 1) |
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60 |
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61 self.assertEqual(source.tell(), 10) |
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62 res = reader.read(1) |
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63 self.assertEqual(res, b'') |
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64 self.assertEqual(source.tell(), 10) |
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65 source.seek(0) |
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66 |
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67 reader = util.cappedreader(source, 45) |
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68 for i in range(4): |
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69 res = reader.read(10) |
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70 self.assertEqual(res, b'x' * 10) |
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71 self.assertEqual(source.tell(), (i + 1) * 10) |
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72 |
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73 res = reader.read(10) |
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74 self.assertEqual(res, b'x' * 5) |
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75 self.assertEqual(source.tell(), 45) |
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76 |
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77 def readlimitpasteof(self): |
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78 source = io.BytesIO(b'x' * 100) |
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79 |
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80 reader = util.cappedreader(source, 1024) |
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81 res = reader.read(1000) |
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82 self.assertEqual(res, b'x' * 100) |
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83 self.assertEqual(source.tell(), 100) |
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84 res = reader.read(1000) |
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85 self.assertEqual(res, b'') |
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86 self.assertEqual(source.tell(), 100) |
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87 |
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88 |
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89 if __name__ == '__main__': |
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90 import silenttestrunner |
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91 |
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92 silenttestrunner.main(__name__) |