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#!/bin/sh
#
# Run test suite for morph.
#
# 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/>.


set -e


# Parse the command line.

run_style=false
run_unit_tests=false
run_yarns=false
snapshot=''
if [ "$#" -eq 0 ]; then
    run_style=true
    run_unit_tests=true
    run_yarns=true
fi
while [ "$#" -gt 0 ]
do
    case "$1" in
    --style)
        run_style=true
        ;;
    --no-style)
        run_style=false
        ;;
    --unit-tests)
        run_unit_tests=true
        ;;
    --no-unit-tests)
        run_unit_tests=false
        ;;
    --yarns)
        run_yarns=true
        ;;
    --no-yarns)
        run_yarns=false
        ;;
    --snapshot)
        snapshot='--snapshot'
        ;;
    --no-snapshot)
        snapshot=''
        ;;
    *) echo "ERROR: Unknown argument $1." 1>&2; exit 1 ;;
    esac
    shift
done

# Find and set tempdir from morph.conf or use /tmp if it does not
# exist. Since the config file can be quite complicated, we use the
# Python ConfigParser module to find TMPDIR. We append a folder called
# testSuite to this so any existing files are not removed.

TMPDIR=$(
    morph --dump-config | python -c '
import sys, ConfigParser
cp = ConfigParser.RawConfigParser()
cp.readfp(sys.stdin)
try:
    print cp.get("config", "tempdir")
except ConfigParser.NoOptionError:
    print "/tmp"'
)

if [ "$TMPDIR" == "None" ]; then
    TMPDIR="/tmp"
fi

TMPDIR="$TMPDIR/testSuite"

mkdir -p "$TMPDIR"
TMPDIR=$(mktemp -d -p "$TMPDIR")
export TMPDIR

# Set PYTHONPATH to start with the current directory so that we always
# find the right version of it for the test suite.

case "$PYTHONPATH" in
    '') PYTHONPATH="$(pwd)" ;;
    *) PYTHONPATH="$(pwd):$PYTHONPATH" ;;
esac
export PYTHONPATH

# Run the style checks

if "$run_style" && [ -d .git ];
then
    echo "Checking copyright statements"
    if ! (git ls-files --cached -z |
          xargs -0r scripts/check-copyright-year); then
        exit 1
    fi

    echo 'Checking source code for silliness'
    if ! (git ls-files --cached |
          grep -v '\.gz$' |
          grep -v '\.json-schema$' |
          grep -v 'yarns/xfce-system-dependencies' |
          xargs -r scripts/check-silliness); then
        exit 1
    fi
fi

# Clean up artifacts from previous (possibly failed) runs, build,
# and run the tests.

if "$run_unit_tests"; then
    python setup.py clean check
fi

# Run scenario tests with yarn, if yarn is available.
#
# Yarn cleans up the environment when it runs tests, and this removes
# PYTHONPATH from the environment. However, we need our tests to have
# the PYTHONPATH, so that we can get them to, for example, use the right
# versions of updated dependencies.  The immediate current need is to
# be able to get them to use an updated version of cliapp, but it is
# a general need.
#
# We solve this by using the yarn --env option, allowing us to tell yarn
# explicitly which environment variables to set in addition to the set
# it sets anyway.

if "$run_yarns" && command -v yarn > /dev/null
then
    yarn --env "PYTHONPATH=$PYTHONPATH" --env "TMPDIR=$TMPDIR" $snapshot \
    --tempdir "$TMPDIR" -s yarns/morph.shell-lib \
        yarns/*.yarn
fi