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annotate tests/test_revmap_migrate.py @ 1473:623af04c6e06

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tests: new test about revmap two-way migrations The test makes sure the bi-directional migration happens transparently, and without data loss.
author Jun Wu <quark@fb.com>
date Wed, 15 Jun 2016 18:25:39 +0100
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children 8937f19586fe
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623af04c6e06 tests: new test about revmap two-way migrations
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1 import test_util
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2
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3 from mercurial import util as hgutil
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4 from hgsubversion import svnmeta, maps
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5 from mercurial.node import hex
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6
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7 class TestRevMapMigrate(test_util.TestBase):
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8
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9 def _test_revmap_migrate(self, fromclass, toclass):
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10 # revmap interfaces to test
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11 getters = [
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12 lambda x: x.branchedits('the_branch', 3),
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13 lambda x: x.branchedits('the_branch', 4),
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14 lambda x: x.branchedits('the_branch', 5),
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15 lambda x: x.branchedits('the_branch', 6),
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16 lambda x: x.branchedits(None, 5),
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17 lambda x: x.branchedits('non_existed', 10),
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18 lambda x: x.branchmaxrevnum('the_branch', 3),
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19 lambda x: x.branchmaxrevnum('the_branch', 4),
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20 lambda x: x.branchmaxrevnum('the_branch', 5),
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21 lambda x: x.branchmaxrevnum('the_branch', 6),
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22 lambda x: x.branchmaxrevnum(None, 5),
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23 lambda x: x.branchmaxrevnum('non_existed', 10),
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24 lambda x: list(x.revhashes(3)),
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25 lambda x: list(x.revhashes(4)),
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26 lambda x: list(x.revhashes(42)),
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27 lambda x: list(x.revhashes(105)),
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28 lambda x: x.firstpulled,
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29 lambda x: x.lastpulled,
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30 lambda x: x.lasthash,
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31 ]
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32
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33 svnmeta.SVNMeta._defaultrevmapclass = fromclass
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34 repo = self._load_fixture_and_fetch('two_heads.svndump')
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35 meta = svnmeta.SVNMeta(repo)
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36 self.assertEqual(meta.revmap.__class__, fromclass)
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37 origrevmap = meta.revmap
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38
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39 # insert fake special (duplicated, with '\0') data
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40 origrevmap[103, None] = b'\0' * 20
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41 origrevmap[104, None] = b'\0' * 18 + b'cd'
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42 origrevmap[105, None] = b'ab\0cdefghijklmnopqrs'
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43 origrevmap[104, None] = b'\0' * 18 + b'\xff\0'
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44 origrevmap[105, 'ab'] = origrevmap[105, None]
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45
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46 origvalues = [f(meta.revmap) for f in getters]
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47
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48 # migrate to another format (transparently)
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49 svnmeta.SVNMeta._defaultrevmapclass = toclass
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50 meta = svnmeta.SVNMeta(repo)
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51 self.assertEqual(meta.revmap.__class__, toclass)
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52
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53 # enable iteration otherwise we cannot use iteritems
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54 origrevmap._allowiter = True
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55 for k, v in origrevmap.iteritems():
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56 newv = meta.revmap[k]
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57 self.assertEqual(newv, v)
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58 self.assertEqual(len(newv), 20)
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59 self.assertEqual(meta.revmap[meta.revmap.hashes()[v]], v)
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60
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61 newvalues = [f(meta.revmap) for f in getters]
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62 self.assertEqual(origvalues, newvalues)
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63
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64 def test_revmap_migrate_up(self):
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65 self._test_revmap_migrate(maps.RevMap, maps.SqliteRevMap)
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66
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67 def test_revmap_migrate_down(self):
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68 self._test_revmap_migrate(maps.SqliteRevMap, maps.RevMap)