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14928
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1 import sys, os, subprocess
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2
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3 try:
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4 subprocess.check_call(['%s/hghave' % os.environ['TESTDIR'], 'cacheable'])
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5 except subprocess.CalledProcessError:
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6 sys.exit(80)
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7
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8 from mercurial import util, scmutil, extensions
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9
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10 filecache = scmutil.filecache
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11
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12 class fakerepo(object):
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13 def __init__(self):
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14 self._filecache = {}
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15
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16 def join(self, p):
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17 return p
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18
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19 def sjoin(self, p):
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20 return p
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21
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22 @filecache('x')
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23 def cached(self):
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24 print 'creating'
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25
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26 def invalidate(self):
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27 for k in self._filecache:
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28 try:
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29 delattr(self, k)
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30 except AttributeError:
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31 pass
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32
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33 def basic(repo):
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34 # file doesn't exist, calls function
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35 repo.cached
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36
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37 repo.invalidate()
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38 # file still doesn't exist, uses cache
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39 repo.cached
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40
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41 # create empty file
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42 f = open('x', 'w')
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43 f.close()
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44 repo.invalidate()
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45 # should recreate the object
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46 repo.cached
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47
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48 f = open('x', 'w')
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49 f.write('a')
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50 f.close()
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51 repo.invalidate()
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52 # should recreate the object
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53 repo.cached
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54
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55 repo.invalidate()
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56 # stats file again, nothing changed, reuses object
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57 repo.cached
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58
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59 # atomic replace file, size doesn't change
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60 # hopefully st_mtime doesn't change as well so this doesn't use the cache
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61 # because of inode change
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62 f = scmutil.opener('.')('x', 'w', atomictemp=True)
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63 f.write('b')
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64 f.rename()
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65
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66 repo.invalidate()
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67 repo.cached
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68
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69 def fakeuncacheable():
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70 def wrapcacheable(orig, *args, **kwargs):
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71 return False
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72
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73 def wrapinit(orig, *args, **kwargs):
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74 pass
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75
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76 originit = extensions.wrapfunction(util.cachestat, '__init__', wrapinit)
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77 origcacheable = extensions.wrapfunction(util.cachestat, 'cacheable', wrapcacheable)
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78
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79 try:
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80 os.remove('x')
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81 except:
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82 pass
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83
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84 basic(fakerepo())
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85
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86 util.cachestat.cacheable = origcacheable
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87 util.cachestat.__init__ = originit
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88
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89 print 'basic:'
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90 print
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91 basic(fakerepo())
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92 print
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93 print 'fakeuncacheable:'
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94 print
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95 fakeuncacheable()
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