#!/usr/bin/env bash

# Run the integration tests with multiple versions of the Docker engine

set -e
set -x

# Don't use /tmp because this isn't available in boot2docker
tmpdir_template="`pwd`/docker-versions.XXXXX"
tmpdir=`mktemp -d "$tmpdir_template"`
trap "rm -rf $tmpdir" EXIT

# If DOCKER_VOLUME is unset, create a temporary directory to cache containers
# between runs
# Only do this on Linux, because using /var/lib/docker from a host volume seems
# problematic with boot2docker.
if [ "$DOCKER_VOLUME" = "" -a `uname` = "Linux" ]; then
	volumes_template="`pwd`/docker-versions.XXXXX"
	volume=`mktemp -d "$volumes_template"`
	trap "rm -rf $tmpdir $volume" EXIT
else
	volume="$DOCKER_VOLUME"
fi

# Released versions

versions="1.6.0 1.6.1 1.7.0 1.7.1"

for v in $versions; do
	echo "Extracting Docker $v from dind image"
	binpath="$tmpdir/docker-$v/docker"
	ID=$(docker create dockerswarm/dind:$v)
	docker cp "$ID:/usr/local/bin/docker" "$tmpdir/docker-$v"

	echo "Running tests with Docker $v"
	DOCKER_BINARY="$binpath" DOCKER_VOLUME="$volume" ./run.sh

	# Cleanup.
	docker rm -f "$ID"
done

# Latest experimental version

echo "Extracting Docker master from dind image"
binpath="$tmpdir/docker-master/docker"
docker pull dockerswarm/dind-master
ID=$(docker create dockerswarm/dind-master)
docker cp "$ID:/usr/local/bin/docker" "$tmpdir/docker-master"

echo "Running tests with Docker master"
DOCKER_BINARY="$binpath" DOCKER_VOLUME="$volume" ./run.sh

# Cleanup.
docker rm -f "$ID"