view tests/test-help @ 10189:e451e599fbcf

patch: support diff data loss detection and upgrade

In worst case, generating diff in upgrade mode can be two times more expensive
than generating it in git mode directly: we may have to regenerate the whole
diff again whenever a git feature is detected. Also, the first diff attempt is
completely buffered instead of being streamed. That said, even without having
profiled it yet, I am convinced we can fast-path the upgrade mode if necessary
were it to be used in regular diff commands, and not only in mq where avoiding
data loss is worth the price.

#!/bin/sh

hg
hg -q
hg help
hg -q help

echo %% test short command list with verbose option
hg -v help shortlist | sed 's/[(]version [^)]*[)]/(version xxx)/'

hg add -h

echo %% test help option with version option
hg add -h --version | sed 's/[(]version [^)]*[)]/(version xxx)/'

hg add --skjdfks

echo %% test ambiguous command help
hg help ad

echo %% test command without options
hg help verify

hg help diff
hg help status
hg -q help status
hg help foo
hg skjdfks

cat > helpext.py <<EOF
import os
from mercurial import commands

def nohelp(ui, *args, **kwargs):
    pass

cmdtable = {
    "nohelp": (nohelp, [], "hg nohelp"),
}

commands.norepo += ' nohelp'
EOF
abspath=`pwd`/helpext.py

echo '[extensions]' >> $HGRCPATH
echo "helpext = $abspath" >> $HGRCPATH

echo %% test command with no help text
hg help nohelp

echo %% test that default list of commands omits extension commands
hg help

echo %% test list of commands with command with no help text
hg help helpext

echo %% test a help topic
hg help revs

exit 0