view tests/test-ui-color.py @ 18694:6a012704c841

mergetools: vimdiff issue a warning explaining how to abort

Adds a message displayed at each vimdiff invocation:

  merge conflict detected, type ":cq" to abort

Vimdiff is very confusing for non-vim user (not to speak about vim user confused
anyway. However it is very likely that vimdiff is picked as the mergetool of
choice when using the default config:
- vim is available on all UNIX system.
- Its one of the rare non graphical merge tools.

import os, sys
from hgext import color
from mercurial import dispatch, ui

# ensure errors aren't buffered
testui = color.colorui()
testui.pushbuffer()
testui.write(('buffered\n'))
testui.warn(('warning\n'))
testui.write_err('error\n')
print repr(testui.popbuffer())

# test dispatch.dispatch with the same ui object
hgrc = open(os.environ["HGRCPATH"], 'w')
hgrc.write('[extensions]\n')
hgrc.write('color=\n')
hgrc.close()

ui_ = ui.ui()
ui_.setconfig('ui', 'formatted', 'True')

# we're not interested in the output, so write that to devnull
ui_.fout = open(os.devnull, 'w')

# call some arbitrary command just so we go through
# color's wrapped _runcommand twice.
def runcmd():
    dispatch.dispatch(dispatch.request(['version', '-q'], ui_))

runcmd()
print "colored? " + str(issubclass(ui_.__class__, color.colorui))
runcmd()
print "colored? " + str(issubclass(ui_.__class__, color.colorui))