"""test behavior of propertycache and unfiltered propertycache

The repoview overlay is quite complexe. We test the behavior of

property cache of both localrepo and repoview to prevent

regression."""

import os, subprocess

import mercurial.localrepo

import mercurial.repoview

import mercurial.util

import mercurial.hg

import mercurial.ui as uimod

# create some special property cache that trace they call

calllog = []

@mercurial.util.propertycache

def testcachedfoobar(repo):

    name = repo.filtername

    if name is None:

        name = ''

    val = len(name)

    calllog.append(val)

    return val

#plug them on repo

mercurial.localrepo.localrepository.testcachedfoobar = testcachedfoobar

# create an empty repo. and instanciate it. It is important to run

# those test on the real object to detect regression.

repopath = os.path.join(os.environ['TESTTMP'], 'repo')

subprocess.check_call(['hg', 'init', repopath])

ui = uimod.ui()

repo = mercurial.hg.repository(ui, path=repopath).unfiltered()

print ''

print '=== property cache ==='

print ''

print 'calllog:', calllog

print 'cached value (unfiltered):',

print vars(repo).get('testcachedfoobar', 'NOCACHE')

print ''

print '= first access on unfiltered, should do a call'

print 'access:', repo.testcachedfoobar

print 'calllog:', calllog

print 'cached value (unfiltered):',

print vars(repo).get('testcachedfoobar', 'NOCACHE')

print ''

print '= second access on unfiltered, should not do call'

print 'access', repo.testcachedfoobar

print 'calllog:', calllog

print 'cached value (unfiltered):',

print vars(repo).get('testcachedfoobar', 'NOCACHE')

print ''

print '= first access on "visible" view, should do a call'

visibleview = repo.filtered('visible')

print 'cached value ("visible" view):',

print vars(visibleview).get('testcachedfoobar', 'NOCACHE')

print 'access:', visibleview.testcachedfoobar

print 'calllog:', calllog

print 'cached value (unfiltered):',

print vars(repo).get('testcachedfoobar', 'NOCACHE')

print 'cached value ("visible" view):',

print vars(visibleview).get('testcachedfoobar', 'NOCACHE')

print ''

print '= second access on "visible view", should not do call'

print 'access:', visibleview.testcachedfoobar

print 'calllog:', calllog

print 'cached value (unfiltered):',

print vars(repo).get('testcachedfoobar', 'NOCACHE')

print 'cached value ("visible" view):',

print vars(visibleview).get('testcachedfoobar', 'NOCACHE')

print ''

print '= no effect on other view'

immutableview = repo.filtered('immutable')

print 'cached value ("immutable" view):',

print vars(immutableview).get('testcachedfoobar', 'NOCACHE')

print 'access:', immutableview.testcachedfoobar

print 'calllog:', calllog

print 'cached value (unfiltered):',

print vars(repo).get('testcachedfoobar', 'NOCACHE')

print 'cached value ("visible" view):',

print vars(visibleview).get('testcachedfoobar', 'NOCACHE')

print 'cached value ("immutable" view):',

print vars(immutableview).get('testcachedfoobar', 'NOCACHE')