#!/bin/bash -x

# If a bundle file is present, call tox with the jenkins version of
# the test environment so it is used.  Otherwise, use the normal
# (non-bundle) test environment.  Also, run pbr freeze on the
# resulting environment at the end so that we have a record of exactly
# what packages we ended up testing.
#
# Usage: run-tox.sh VENV
#
# Where VENV is the name of the tox environment to run (specified in the
# project's tox.ini file).

venv=$1

if [[ -z "$venv" ]]; then
    echo "Usage: $?"
    echo
    echo "VENV: The tox environment to run (eg 'python27')"
    exit 1
fi

function freeze_venv {
    [ -e $bin_path/pbr ] && freezecmd=pbr || freezecmd=pip

    echo "Begin $freezecmd freeze output from test virtualenv:"
    echo "======================================================================"
    ${bin_path}/${freezecmd} freeze
    echo "======================================================================"
}

function process_testr_artifacts {
    if [ ! -d ".testrepository" ] ; then
        return
    fi

    if [ -f ".testrepository/0.2" ] ; then
        cp .testrepository/0.2 ./testrepository.subunit
    elif [ -f ".testrepository/0" ] ; then
        $bin_path/testr last --subunit > ./testrepository.subunit
    fi
    $PYTHON $script_path/subunit2html.py ./testrepository.subunit testr_results.html
    SUBUNIT_SIZE=$(du -k ./testrepository.subunit | awk '{print $1}')
    gzip -9 ./testrepository.subunit
    gzip -9 ./testr_results.html

    if [[ "$SUBUNIT_SIZE" -gt 50000 ]]; then
        echo
        echo "testrepository.subunit was > 50 MB of uncompressed data!!!"
        echo "Something is causing tests for this project to log significant amounts"
        echo "of data. This may be writers to python logging, stdout, or stderr."
        echo "Failing this test as a result"
        echo
        exit 1
    fi

    rancount=$($bin_path/testr last | sed -ne 's/Ran \([0-9]\+\).*tests in.*/\1/p')
    if [ -z "$rancount" ] || [ "$rancount" -eq "0" ] ; then
        echo
        echo "Zero tests were run. At least one test should have been run."
        echo "Failing this test as a result"
        echo
        exit 1
    fi
}

function check_sudo_usage {
    sudo $script_path/jenkins-sudo-grep.sh post
    sudoresult=$?

    if [ $sudoresult -ne "0" ]; then
        echo
        echo "This test has failed because it attempted to execute commands"
        echo "with sudo.  See above for the exact commands used."
        echo
        exit 1
    fi
}

function check_oom {
    $script_path/jenkins-oom-grep.sh post
    oomresult=$?

    if [ $oomresult -ne "0" ]; then
        echo
        echo "This test has failed because it attempted to exceed configured"
        echo "memory limits and was killed prior to completion.  See above"
        echo "for related kernel messages."
        echo
        exit 1
    fi
}

function check_nose_html {
    htmlreport=$(find . -name $NOSE_HTML_OUT_FILE)
    if [ -f "$htmlreport" ]; then
        passcount=$(grep -c 'tr class=.passClass' $htmlreport)
        if [ $passcount -eq "0" ]; then
            echo
            echo "Zero tests passed, which probably means there was an error"
            echo "parsing one of the python files, or that some other failure"
            echo "during test setup prevented a sane run."
            echo
            exit 1
        fi
    else
        echo
        echo "WARNING: Unable to find $NOSE_HTML_OUT_FILE to confirm results!"
        echo
    fi
}

script_path=/usr/local/jenkins/slave_scripts
bin_path=.tox/$venv/bin

export PYTHON=$bin_path/python
export NOSE_WITH_XUNIT=1
export NOSE_WITH_HTML_OUTPUT=1
export NOSE_HTML_OUT_FILE='nose_results.html'
export TMPDIR=$(/bin/mktemp -d)
trap "rm -rf $TMPDIR" EXIT

cat /etc/image-hostname.txt

$script_path/jenkins-oom-grep.sh pre

sudo $script_path/jenkins-sudo-grep.sh pre

tox -v -e$venv
result=$?

freeze_venv
process_testr_artifacts
check_sudo_usage
check_oom
check_nose_html

exit $result