tests/test-propertycache.py

grep: extract main search loop as searcher method

Still displayer part is in commands.grep(), the core grep logic is now
reusable. I'll revisit the displayer stuff later since it will be another
long series.

"""test behavior of propertycache and unfiltered propertycache

The repoview overlay is quite complex. We test the behavior of
property cache of both localrepo and repoview to prevent
regression."""

from __future__ import absolute_import, print_function
import os
import subprocess

from mercurial import (
    hg,
    localrepo,
    pycompat,
    ui as uimod,
    util,
)

from mercurial.utils import procutil

# create some special property cache that trace they call

calllog = []


@util.propertycache
def testcachedfoobar(repo):
    name = repo.filtername
    if name is None:
        name = ''
    val = len(name)
    calllog.append(val)
    return val


unficalllog = []


@localrepo.unfilteredpropertycache
def testcachedunfifoobar(repo):
    name = repo.filtername
    if name is None:
        name = ''
    val = 100 + len(name)
    unficalllog.append(val)
    return val


# plug them on repo
localrepo.localrepository.testcachedfoobar = testcachedfoobar
localrepo.localrepository.testcachedunfifoobar = testcachedunfifoobar


# Create an empty repo and instantiate it. It is important to run
# these tests on the real object to detect regression.
repopath = pycompat.fsencode(os.path.join(os.environ['TESTTMP'], 'repo'))
assert (
    subprocess.call(
        pycompat.rapply(procutil.tonativestr, [b'hg', b'init', repopath])
    )
    == 0
)

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


print('')
print('=== property cache ===')
print('')
print('calllog:', calllog)
print(
    'cached value (unfiltered):', 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):', 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):', 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):',
    vars(visibleview).get('testcachedfoobar', 'NOCACHE'),
)
print('access:', visibleview.testcachedfoobar)
print('calllog:', calllog)
print(
    'cached value (unfiltered):', vars(repo).get('testcachedfoobar', 'NOCACHE')
)
print(
    'cached value ("visible" view):',
    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):', vars(repo).get('testcachedfoobar', 'NOCACHE')
)
print(
    'cached value ("visible" view):',
    vars(visibleview).get('testcachedfoobar', 'NOCACHE'),
)

print('')
print('= no effect on other view')
immutableview = repo.filtered('immutable')
print(
    'cached value ("immutable" view):',
    vars(immutableview).get('testcachedfoobar', 'NOCACHE'),
)
print('access:', immutableview.testcachedfoobar)
print('calllog:', calllog)
print(
    'cached value (unfiltered):', vars(repo).get('testcachedfoobar', 'NOCACHE')
)
print(
    'cached value ("visible" view):',
    vars(visibleview).get('testcachedfoobar', 'NOCACHE'),
)
print(
    'cached value ("immutable" view):',
    vars(immutableview).get('testcachedfoobar', 'NOCACHE'),
)

# unfiltered property cache test
print('')
print('')
print('=== unfiltered property cache ===')
print('')
print('unficalllog:', unficalllog)
print(
    'cached value (unfiltered):      ',
    vars(repo).get('testcachedunfifoobar', 'NOCACHE'),
)
print(
    'cached value ("visible" view):  ',
    vars(visibleview).get('testcachedunfifoobar', 'NOCACHE'),
)
print(
    'cached value ("immutable" view):',
    vars(immutableview).get('testcachedunfifoobar', 'NOCACHE'),
)

print('')
print('= first access on unfiltered, should do a call')
print('access (unfiltered):', repo.testcachedunfifoobar)
print('unficalllog:', unficalllog)
print(
    'cached value (unfiltered):      ',
    vars(repo).get('testcachedunfifoobar', 'NOCACHE'),
)

print('')
print('= second access on unfiltered, should not do call')
print('access (unfiltered):', repo.testcachedunfifoobar)
print('unficalllog:', unficalllog)
print(
    'cached value (unfiltered):      ',
    vars(repo).get('testcachedunfifoobar', 'NOCACHE'),
)

print('')
print('= access on view should use the unfiltered cache')
print('access (unfiltered):      ', repo.testcachedunfifoobar)
print('access ("visible" view):  ', visibleview.testcachedunfifoobar)
print('access ("immutable" view):', immutableview.testcachedunfifoobar)
print('unficalllog:', unficalllog)
print(
    'cached value (unfiltered):      ',
    vars(repo).get('testcachedunfifoobar', 'NOCACHE'),
)
print(
    'cached value ("visible" view):  ',
    vars(visibleview).get('testcachedunfifoobar', 'NOCACHE'),
)
print(
    'cached value ("immutable" view):',
    vars(immutableview).get('testcachedunfifoobar', 'NOCACHE'),
)

print('')
print('= even if we clear the unfiltered cache')
del repo.__dict__['testcachedunfifoobar']
print(
    'cached value (unfiltered):      ',
    vars(repo).get('testcachedunfifoobar', 'NOCACHE'),
)
print(
    'cached value ("visible" view):  ',
    vars(visibleview).get('testcachedunfifoobar', 'NOCACHE'),
)
print(
    'cached value ("immutable" view):',
    vars(immutableview).get('testcachedunfifoobar', 'NOCACHE'),
)
print('unficalllog:', unficalllog)
print('access ("visible" view):  ', visibleview.testcachedunfifoobar)
print('unficalllog:', unficalllog)
print(
    'cached value (unfiltered):      ',
    vars(repo).get('testcachedunfifoobar', 'NOCACHE'),
)
print(
    'cached value ("visible" view):  ',
    vars(visibleview).get('testcachedunfifoobar', 'NOCACHE'),
)
print(
    'cached value ("immutable" view):',
    vars(immutableview).get('testcachedunfifoobar', 'NOCACHE'),
)
print('access ("immutable" view):', immutableview.testcachedunfifoobar)
print('unficalllog:', unficalllog)
print(
    'cached value (unfiltered):      ',
    vars(repo).get('testcachedunfifoobar', 'NOCACHE'),
)
print(
    'cached value ("visible" view):  ',
    vars(visibleview).get('testcachedunfifoobar', 'NOCACHE'),
)
print(
    'cached value ("immutable" view):',
    vars(immutableview).get('testcachedunfifoobar', 'NOCACHE'),
)
print('access (unfiltered):      ', repo.testcachedunfifoobar)
print('unficalllog:', unficalllog)
print(
    'cached value (unfiltered):      ',
    vars(repo).get('testcachedunfifoobar', 'NOCACHE'),
)
print(
    'cached value ("visible" view):  ',
    vars(visibleview).get('testcachedunfifoobar', 'NOCACHE'),
)
print(
    'cached value ("immutable" view):',
    vars(immutableview).get('testcachedunfifoobar', 'NOCACHE'),
)