tests: launch hghave with python interpreter without relying on hash-bang

tests/test-filecache.py

@@ -1,94 +1,94
 import sys, os, subprocess
 
-if subprocess.call(['%s/hghave' % os.environ['TESTDIR'], 'cacheable']):
+if subprocess.call(['python', '%s/hghave' % os.environ['TESTDIR'], 'cacheable']):
     sys.exit(80)
 
 from mercurial import util, scmutil, extensions
 
 filecache = scmutil.filecache
 
 class fakerepo(object):
     def __init__(self):
         self._filecache = {}
 
     def join(self, p):
         return p
 
     def sjoin(self, p):
         return p
 
     @filecache('x')
     def cached(self):
         print 'creating'
 
     def invalidate(self):
         for k in self._filecache:
             try:
                 delattr(self, k)
             except AttributeError:
                 pass
 
 def basic(repo):
     # file doesn't exist, calls function
     repo.cached
 
     repo.invalidate()
     # file still doesn't exist, uses cache
     repo.cached
 
     # create empty file
     f = open('x', 'w')
     f.close()
     repo.invalidate()
     # should recreate the object
     repo.cached
 
     f = open('x', 'w')
     f.write('a')
     f.close()
     repo.invalidate()
     # should recreate the object
     repo.cached
 
     repo.invalidate()
     # stats file again, nothing changed, reuses object
     repo.cached
 
     # atomic replace file, size doesn't change
     # hopefully st_mtime doesn't change as well so this doesn't use the cache
     # because of inode change
     f = scmutil.opener('.')('x', 'w', atomictemp=True)
     f.write('b')
     f.close()
 
     repo.invalidate()
     repo.cached
 
 def fakeuncacheable():
     def wrapcacheable(orig, *args, **kwargs):
         return False
 
     def wrapinit(orig, *args, **kwargs):
         pass
 
     originit = extensions.wrapfunction(util.cachestat, '__init__', wrapinit)
     origcacheable = extensions.wrapfunction(util.cachestat, 'cacheable',
                                             wrapcacheable)
 
     try:
         os.remove('x')
     except:
         pass
 
     basic(fakerepo())
 
     util.cachestat.cacheable = origcacheable
     util.cachestat.__init__ = originit
 
 print 'basic:'
 print
 basic(fakerepo())
 print
 print 'fakeuncacheable:'
 print
 fakeuncacheable()