tests/test-minifileset.py

merge: use constants for merge state record types

merge.py is using multiple discrete sets of 1 and 2 letter constants
to define types and behavior. To the uninitiated, the code is very
difficult to reason about. I didn't even realize there were multiple
sets of constants in play initially!

We begin our sanity injection with merge state records. The record
types (which are serialized to disk) are now defined in RECORD_*
constants.

Differential Revision: https://phab.mercurial-scm.org/D2698

from __future__ import absolute_import
from __future__ import print_function

import os
import sys

# make it runnable directly without run-tests.py
sys.path[0:0] = [os.path.join(os.path.dirname(__file__), '..')]

from mercurial import minifileset

def check(text, truecases, falsecases):
    f = minifileset.compile(text)
    for args in truecases:
        if not f(*args):
            print('unexpected: %r should include %r' % (text, args))
    for args in falsecases:
        if f(*args):
            print('unexpected: %r should exclude %r' % (text, args))

check('all()', [('a.php', 123), ('b.txt', 0)], [])
check('none()', [], [('a.php', 123), ('b.txt', 0)])
check('!!!!((!(!!all())))', [], [('a.php', 123), ('b.txt', 0)])

check('"path:a" & (**.b | **.c)', [('a/b.b', 0), ('a/c.c', 0)], [('b/c.c', 0)])
check('(path:a & **.b) | **.c',
      [('a/b.b', 0), ('a/c.c', 0), ('b/c.c', 0)], [])

check('**.bin - size("<20B")', [('b.bin', 21)], [('a.bin', 11), ('b.txt', 21)])

check('!!**.bin or size(">20B") + "path:bin" or !size(">10")',
      [('a.bin', 11), ('b.txt', 21), ('bin/abc', 11)],
      [('a.notbin', 11), ('b.txt', 11), ('bin2/abc', 11)])

check('(**.php and size(">10KB")) | **.zip | ("path:bin" & !"path:bin/README") '
      ' | size(">1M")',
      [('a.php', 15000), ('a.zip', 0), ('bin/a', 0), ('bin/README', 1e7)],
      [('a.php', 5000), ('b.zip2', 0), ('t/bin/a', 0), ('bin/README', 1)])