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annotate tests/test-rust-revlog.py @ 52799:4e34e8fd46d4

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rust-pyo3-revlog: nodemap based index methods They are rather straightforward, except for `_index_get_rev` that takes care of not initializing a nodetree on some conditions. In `_index_partialmatch`, we solve the todo that was in the `hg-cpython`, since we introduced the `py_node_for_rev` helper earlier. The new test method in `test-rust-revlog.py` provides comparison with the `hg-cpython` implementation of `InnerRevlog`.
author Georges Racinet <georges.racinet@cloudcrane.io>
date Wed, 25 Dec 2024 16:16:22 +0100
parents 07740bd86fd9
children e5f89bd1a5ee
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1 import struct
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2
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3 from mercurial.node import (
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4 bin as node_bin,
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5 hex,
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6 )
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7 from mercurial import error
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8
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9 try:
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10 from mercurial import rustext
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11
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12 rustext.__name__ # trigger immediate actual import
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13 except ImportError:
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14 rustext = None
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15 else:
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16 # this would fail already without appropriate ancestor.__package__
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17 from mercurial.rustext.ancestor import LazyAncestors
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18
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19 from mercurial.testing import revlog as revlogtesting
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21 header = struct.unpack(">I", revlogtesting.data_non_inlined[:4])[0]
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23
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24 class RustInnerRevlogTestMixin:
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25 """Common tests for both Rust Python bindings."""
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26
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27 node_hex0 = b'd1f4bbb0befc13bd8cd39d0fcdd93b8c078c4a2f'
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28 node0 = node_bin(node_hex0)
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29 bogus_node_hex = b'cafe' * 10
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30 bogus_node = node_bin(bogus_node_hex)
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32 def test_index_nodemap(self):
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33 idx = self.parserustindex()
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34 self.assertTrue(idx.has_node(self.node0))
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35 self.assertFalse(idx.has_node(self.bogus_node))
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37 self.assertEqual(idx.get_rev(self.node0), 0)
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38 self.assertEqual(idx.get_rev(self.node0), 0)
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40 self.assertEqual(idx.rev(self.node0), 0)
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41 with self.assertRaises(error.RevlogError) as exc_info:
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42 idx.rev(self.bogus_node)
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43 self.assertEqual(exc_info.exception.args, (None,))
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45 self.assertEqual(idx.partialmatch(self.node_hex0[:3]), self.node0)
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46 self.assertIsNone(idx.partialmatch(self.bogus_node_hex[:3]))
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47 self.assertEqual(idx.shortest(self.node0), 1)
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49
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50 # Conditional skipping done by the base class
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51 class RustInnerRevlogTest(
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52 revlogtesting.RustRevlogBasedTestBase, RustInnerRevlogTestMixin
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53 ):
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54 """For reference"""
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55
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56 def test_heads(self):
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57 idx = self.parserustindex()
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58 self.assertEqual(idx.headrevs(), [3])
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59
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60 def test_len(self):
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61 idx = self.parserustindex()
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62 self.assertEqual(len(idx), 4)
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63
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64 def test_ancestors(self):
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65 rustidx = self.parserustindex()
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66 lazy = LazyAncestors(rustidx, [3], 0, True)
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67 # we have two more references to the index:
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68 # - in its inner iterator for __contains__ and __bool__
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69 # - in the LazyAncestors instance itself (to spawn new iterators)
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70 self.assertTrue(2 in lazy)
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71 self.assertTrue(bool(lazy))
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72 self.assertEqual(list(lazy), [3, 2, 1, 0])
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73 # a second time to validate that we spawn new iterators
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74 self.assertEqual(list(lazy), [3, 2, 1, 0])
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75
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76 # let's check bool for an empty one
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77 self.assertFalse(LazyAncestors(rustidx, [0], 0, False))
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78
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79 def test_standalone_nodetree(self):
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80 idx = self.parserustindex()
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81 nt = self.nodetree(idx)
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82 for i in range(4):
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83 nt.insert(i)
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84
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85 bin_nodes = [entry[7] for entry in idx]
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86 hex_nodes = [hex(n) for n in bin_nodes]
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87
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88 for i, node in enumerate(hex_nodes):
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89 self.assertEqual(nt.prefix_rev_lookup(node), i)
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90 self.assertEqual(nt.prefix_rev_lookup(node[:5]), i)
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91
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92 # all 4 revisions in idx (standard data set) have different
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93 # first nybbles in their Node IDs,
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94 # hence `nt.shortest()` should return 1 for them, except when
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95 # the leading nybble is 0 (ambiguity with NULL_NODE)
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96 for i, (bin_node, hex_node) in enumerate(zip(bin_nodes, hex_nodes)):
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97 shortest = nt.shortest(bin_node)
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98 expected = 2 if hex_node[0] == ord('0') else 1
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99 self.assertEqual(shortest, expected)
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100 self.assertEqual(nt.prefix_rev_lookup(hex_node[:shortest]), i)
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101
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102 # test invalidation (generation poisoning) detection
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103 del idx[3]
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104 self.assertTrue(nt.is_invalidated())
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105
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106
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107 # Conditional skipping done by the base class
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108 class PyO3InnerRevlogTest(
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109 revlogtesting.PyO3RevlogBasedTestBase, RustInnerRevlogTestMixin
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110 ):
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111 """Testing new PyO3 bindings, by comparison with rust-cpython bindings."""
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112
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113
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114 if __name__ == '__main__':
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115 import silenttestrunner
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116
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117 silenttestrunner.main(__name__)