tests/testlib/exchange-obsmarker-util.sh

strip: introduce a soft strip option

This is the first user-accessible way to use the archived phase introduced in
4.8. This implements a feature discussed during the Stockholm sprint, using
the archived phase for hiding changesets.

The archived phase behaves exactly as stripping: changesets are no longer
visible, but pulling/unbundling them will make then reappear. The only notable
difference is that unlike hard stripping, soft stripping does not affect
obsmarkers.

The next changeset will make use of the archived phase for history rewriting
command. However, having a way to manually trigger the feature first seems a
necessary step before exposing users to this phase; there is a way to
un-archived changesets (unbundling), so there must be a way to archive them
again.

Adding a flag to strip is a good way to provide access to the feature without
taking a too big risk on the final UI we want. The flag is experimental so it
won't be exposed by default.

Using the archived phase is faster and less traumatic for the repository than
actually stripping changesets.

#!/bin/sh
# setup config and various utility to test obsolescence marker exchanges tests

cat >> $TESTTMP/prune.sh << EOF
rev=\`hg log --hidden --template '{node}\n' --rev "\$3"\`

hg debugobsolete --record-parents \$1 "\$2" \$rev \
   && hg up --quiet 'max((::.) - obsolete())'
EOF

cat >> $HGRCPATH <<EOF
[web]
# We test http pull and push, drop authentication requirement
push_ssl = false
allow_push = *

[ui]
# simpler log output
logtemplate ="{node|short} ({phase}): {desc}\n"

[phases]
# non publishing server
publish=False

[experimental]
# reduce output changes
bundle2-output-capture=True
# enable evolution
evolution=true

[extensions]
# we need to strip some changeset for some test cases
hgext.strip=

[devel]
strip-obsmarkers = no

[alias]
# fix date used to create obsolete markers.
debugobsolete=debugobsolete -d '0 0'
# poor man substiture to the evolve 'hg prune'. using prune makes the test clearer and 
prune = !sh $TESTTMP/prune.sh \$1 "\$2" "\$3"
EOF

mkcommit() {
   echo "$1" > "$1"
   hg add "$1"
   hg ci -m "$1"
}
getid() {
   hg log --hidden --template '{node}\n' --rev "$1"
}

setuprepos() {
    echo creating test repo for test case $1
    mkdir $1
    cd $1
    echo - pulldest
    hg init pushdest
    cd pushdest
    mkcommit O
    hg phase --public .
    cd ..
    echo - main
    hg clone -q pushdest main
    echo - pushdest
    hg clone -q main pulldest
    echo 'cd into `main` and proceed with env setup'
}

inspect_obsmarkers (){
    # This exist as its own function to help the evolve extension reuse the tests as is.
    # The evolve extensions version will includes more advances query (eg:
    # related to obsmarkers discovery) to this.
    echo 'obsstore content'
    echo '================'
    hg debugobsolete
}

dotest() {
    # dotest TESTNAME [TARGETNODE] [PUSHFLAGS+]
    #
    # test exchange for the given test case.
    #
    # This function performs push and pull in all directions through all
    # protocols and display the resulting obsolescence markers on all sides.

    testcase=$1
    shift
    target="$1"
    if [ $# -gt 0 ]; then
        shift
    fi
    targetnode=""
    desccall=""
    cd $testcase
    echo "## Running testcase $testcase"
    if [ -n "$target" ]; then
        desccall="desc("\'"$target"\'")"
        targetnode="`hg -R main id -qr \"$desccall\"`"
        echo "# testing echange of \"$target\" ($targetnode)"
    fi
    echo "## initial state"
    echo "# obstore: main"
    hg -R main     debugobsolete | sort
    echo "# obstore: pushdest"
    hg -R pushdest debugobsolete | sort
    echo "# obstore: pulldest"
    hg -R pulldest debugobsolete | sort

    if [ -n "$target" ]; then
        echo "## pushing \"$target\"" from main to pushdest
        hg -R main push -r "$desccall" $@ pushdest
    else
        echo "## pushing from main to pushdest"
        hg -R main push pushdest $@
    fi
    echo "## post push state"
    echo "# obstore: main"
    hg -R main     debugobsolete | sort
    echo "# obstore: pushdest"
    hg -R pushdest debugobsolete | sort
    echo "# obstore: pulldest"
    hg -R pulldest debugobsolete | sort
    if [ -n "$target" ]; then
        echo "## pulling \"$targetnode\"" from main into pulldest
        hg -R pulldest pull -r $targetnode $@ main
    else
        echo "## pulling from main into pulldest"
        hg -R pulldest pull main $@
    fi
    echo "## post pull state"
    echo "# obstore: main"
    hg -R main     debugobsolete | sort
    echo "# obstore: pushdest"
    hg -R pushdest debugobsolete | sort
    echo "# obstore: pulldest"
    hg -R pulldest debugobsolete | sort

    cd ..

}