#!/bin/bash

# https://vaneyckt.io/posts/safer_bash_scripts_with_set_euxo_pipefail/
set -euxo pipefail

# The filesystem location of the root of a virtualenv we can use to get/build
# wheels.
BOOTSTRAP_VENV="$1"
shift

# The filesystem location of the root of the project source.  We need this to
# know what wheels to get/build, of course.
PROJECT_ROOT="$1"
shift

ALLOWED_FAILURE="$1"
shift

ARTIFACTS=$1
shift

TAHOE_LAFS_TOX_ENVIRONMENT=$1
shift

TAHOE_LAFS_TOX_ARGS=$1
shift || :

if [ -n "${ARTIFACTS}" ]; then
    # If given an artifacts path, prepare to have some artifacts created
    # there.  The integration tests don't produce any artifacts; that is the
    # case where we expect not to end up here.

    # Make sure we can actually write things to this directory.
    mkdir -p "${ARTIFACTS}"

    SUBUNIT2="${ARTIFACTS}"/results.subunit2

    # Use an intermediate directory here because CircleCI extracts some label
    # information from its name.
    JUNITXML="${ARTIFACTS}"/junit/unittests/results.xml
else
    SUBUNIT2=""
    JUNITXML=""
fi

# A prefix for the test command that ensure it will exit after no more than a
# certain amount of time.  Ideally, we would only enforce a "silent" period
# timeout but there isn't obviously a ready-made tool for that.  The unit test
# suite only takes about 5 - 6 minutes on CircleCI right now.  The integration
# tests are a bit longer than that.  45 minutes seems like a moderately safe
# window.
#
# This is primarily aimed at catching hangs on the PyPy job which runs for
# about 21 minutes and then gets killed by CircleCI in a way that fails the
# job and bypasses our "allowed failure" logic.
TIMEOUT="timeout --kill-after 1m 45m"

# Run the test suite as a non-root user.  This is the expected usage some
# small areas of the test suite assume non-root privileges (such as unreadable
# files being unreadable).
#
# Also run with /tmp as a workdir because the non-root user won't be able to
# create the tox working filesystem state in the source checkout because it is
# owned by root.
#
# Send the output directly to a file because transporting the binary subunit2
# via tox and then scraping it out is hideous and failure prone.
export SUBUNITREPORTER_OUTPUT_PATH="${SUBUNIT2}"
export TAHOE_LAFS_TRIAL_ARGS="${TAHOE_LAFS_TRIAL_ARGS:---reporter=subunitv2-file --rterrors}"
export PIP_NO_INDEX="1"

# Make output unbuffered, so progress reports from subunitv2-file get streamed
# and notify CircleCI we're still alive.
export PYTHONUNBUFFERED=1

if [ "${ALLOWED_FAILURE}" = "yes" ]; then
    alternative="true"
else
    alternative="false"
fi

WORKDIR=/tmp/tahoe-lafs.tox
${TIMEOUT} ${BOOTSTRAP_VENV}/bin/tox \
    -c ${PROJECT_ROOT}/tox.ini \
    --workdir "${WORKDIR}" \
    -e "${TAHOE_LAFS_TOX_ENVIRONMENT}" \
    ${TAHOE_LAFS_TOX_ARGS} || "${alternative}"

if [ -n "${ARTIFACTS}" ]; then
    if [ ! -e "${SUBUNIT2}" ]; then
	echo "subunitv2 output file does not exist: ${SUBUNIT2}"
	exit 1
    fi

    # Create a junitxml results area.
    mkdir -p "$(dirname "${JUNITXML}")"

    "${WORKDIR}/${TAHOE_LAFS_TOX_ENVIRONMENT}/bin/subunit2junitxml" < "${SUBUNIT2}" > "${JUNITXML}" || "${alternative}"
fi