view tests/test-dispatch.py @ 20833:47d43e2323c5

revset: fix generatorset race condition

If two things were iterating over a generatorset at the same time, they could
miss out on the things the other was generating, resulting in incomplete
results. This fixes it by making it possible for two things to iterate at once,
by always checking the _genlist at the beginning of each iteration.

I was only able to repro it with pending changes from my other commits, but they
aren't ready yet. So I'm unable to add a test for now.

import os
from mercurial import dispatch

def testdispatch(cmd):
    """Simple wrapper around dispatch.dispatch()

    Prints command and result value, but does not handle quoting.
    """
    print "running: %s" % (cmd,)
    req = dispatch.request(cmd.split())
    result = dispatch.dispatch(req)
    print "result: %r" % (result,)


testdispatch("init test1")
os.chdir('test1')

# create file 'foo', add and commit
f = open('foo', 'wb')
f.write('foo\n')
f.close()
testdispatch("add foo")
testdispatch("commit -m commit1 -d 2000-01-01 foo")

# append to file 'foo' and commit
f = open('foo', 'ab')
f.write('bar\n')
f.close()
testdispatch("commit -m commit2 -d 2000-01-02 foo")

# check 88803a69b24 (fancyopts modified command table)
testdispatch("log -r 0")
testdispatch("log -r tip")