Mercurial > hg
annotate tests/test-ctxmanager.py @ 32017:9f7ba0daada1
obsolescence: add test for the "branch replacement" logic during push, case D5
Mercurial checks for the introduction of new heads on push. Evolution comes
into play to detect if existing branches on the server are being replaced by
some of the new one we push.
This changeset adds test for the improved "branch replacement" logic introduce
in an earlier commits. This tests initially lived in the evolve extensions.
Since we now have the code handling this logic in core, it make sense to have
the tests in core too.
See inline documentation for details about the test case added in this
changeset.
author | Pierre-Yves David <pierre-yves.david@ens-lyon.org> |
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date | Sat, 15 Apr 2017 02:54:27 +0200 |
parents | 441491aba8c3 |
children | 68c43a416585 |
rev | line source |
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1 from __future__ import absolute_import |
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2 |
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3 import silenttestrunner |
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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 class contextmanager(object): |
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9 def __init__(self, name, trace): |
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10 self.name = name |
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11 self.entered = False |
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12 self.exited = False |
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13 self.trace = trace |
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14 |
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15 def __enter__(self): |
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16 self.entered = True |
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17 self.trace(('enter', self.name)) |
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18 return self |
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19 |
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20 def __exit__(self, exc_type, exc_val, exc_tb): |
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21 self.exited = exc_type, exc_val, exc_tb |
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22 self.trace(('exit', self.name)) |
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23 |
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24 def __repr__(self): |
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25 return '<ctx %r>' % self.name |
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26 |
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27 class ctxerror(Exception): |
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28 pass |
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29 |
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30 class raise_on_enter(contextmanager): |
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31 def __enter__(self): |
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32 self.trace(('raise', self.name)) |
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33 raise ctxerror(self.name) |
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34 |
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35 class raise_on_exit(contextmanager): |
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36 def __exit__(self, exc_type, exc_val, exc_tb): |
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37 self.trace(('raise', self.name)) |
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38 raise ctxerror(self.name) |
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39 |
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40 def ctxmgr(name, trace): |
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41 return lambda: contextmanager(name, trace) |
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42 |
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43 class test_ctxmanager(unittest.TestCase): |
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44 def test_basics(self): |
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45 trace = [] |
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46 addtrace = trace.append |
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47 with util.ctxmanager(ctxmgr('a', addtrace), ctxmgr('b', addtrace)) as c: |
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48 a, b = c.enter() |
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49 c.atexit(addtrace, ('atexit', 'x')) |
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50 c.atexit(addtrace, ('atexit', 'y')) |
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51 self.assertEqual(trace, [('enter', 'a'), ('enter', 'b'), |
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52 ('atexit', 'y'), ('atexit', 'x'), |
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53 ('exit', 'b'), ('exit', 'a')]) |
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54 |
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55 def test_raise_on_enter(self): |
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56 trace = [] |
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57 addtrace = trace.append |
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58 def go(): |
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59 with util.ctxmanager(ctxmgr('a', addtrace), |
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60 lambda: raise_on_enter('b', addtrace)) as c: |
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61 c.enter() |
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62 addtrace('unreachable') |
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63 self.assertRaises(ctxerror, go) |
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64 self.assertEqual(trace, [('enter', 'a'), ('raise', 'b'), ('exit', 'a')]) |
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65 |
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66 def test_raise_on_exit(self): |
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67 trace = [] |
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68 addtrace = trace.append |
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69 def go(): |
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70 with util.ctxmanager(ctxmgr('a', addtrace), |
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71 lambda: raise_on_exit('b', addtrace)) as c: |
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72 c.enter() |
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73 addtrace('running') |
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74 self.assertRaises(ctxerror, go) |
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75 self.assertEqual(trace, [('enter', 'a'), ('enter', 'b'), 'running', |
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76 ('raise', 'b'), ('exit', 'a')]) |
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77 |
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78 if __name__ == '__main__': |
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79 silenttestrunner.main(__name__) |