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#!/bin/sh
#
# Copyright (C) 2011-2015  Codethink Limited
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; version 2 of the License.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program.  If not, see <http://www.gnu.org/licenses/>.


## Does a cached stratum get rebuilt if its chunk changes?
## This tests a bug that is currently in morph, where the stratum does
## not get rebuilt in that case. Later on, the test will guard against
## regressions.

set -eu

cache="$DATADIR/cache/artifacts"

# Make a branch in the chunk repo where we can make our own modifications.
(cd "$DATADIR/chunk-repo" &&
 git checkout --quiet farrokh &&
 git checkout --quiet -b rebuild-cached-stratum)

# Make a branch in the morphs repo and modify the stratum to refer to
# the new chunk branch.
(cd "$DATADIR/morphs-repo" &&
 git checkout --quiet -b rebuild-cached-stratum &&
 sed -i 's/farrokh/rebuild-cached-stratum/' hello-stratum.morph &&
 sed -i 's/master/rebuild-cached-stratum/' hello-system.morph &&
 git commit --quiet -m "rebuild-cached-stratum" -a)

# Build the first time.
"$SRCDIR/scripts/test-morph" build-morphology \
    test:morphs-repo rebuild-cached-stratum hello-system
echo "first build:"
(cd "$cache" && ls *hello-stratum-* | sed 's/^[^.]*\./ /' |
 LC_ALL=C sort -u)

# Change the chunk.
(cd "$DATADIR/chunk-repo" &&
 echo >> hello.c &&
 git commit --quiet -am change)

# Rebuild.
"$SRCDIR/scripts/test-morph" build-morphology \
    test:morphs-repo rebuild-cached-stratum hello-system
echo "second build:"
(cd "$cache" && ls *hello-stratum-* | sed 's/^[^.]*\./ /' |
 LC_ALL=C sort -u)