add tests skeleton

Signed-off-by: Antonio Murdaca <runcom@redhat.com>

test/helpers.bash

@@ -0,0 +1,80 @@
+#!/bin/bash
+
+# Root directory of integration tests.
+INTEGRATION_ROOT=$(dirname "$(readlink -f "$BASH_SOURCE")")
+
+# Test data path.
+TESTDATA="${INTEGRATION_ROOT}/../testdata"
+
+# Root directory of the repository.
+OCID_ROOT=${OCID_ROOT:-$(cd "$INTEGRATION_ROOT/../.."; pwd -P)}
+
+# Path of the ocid binary.
+OCID_BINARY=${OCID_BINARY:-${OCID_ROOT}/ocid/ocid}
+# Path of the ocic binary.
+OCIC_BINARY=${OCIC_BINARY:-${OCID_ROOT}/ocid/ocic}
+# Path of the conmon binary.
+CONMON_BINARY=${CONMON_BINARY:-${OCID_ROOT}/ocid/conmon/conmon}
+
+PATH=$PATH:$BATS_TMPDIR
+
+# Run ocid using the binary specified by $OCID_BINARY.
+# This must ONLY be run on engines created with `start_ocid`.
+function ocid() {
+	"$OCID_BINARY" "$@"
+}
+
+# Run ocic using the binary specified by $OCID_BINARY.
+function ocic() {
+	"$OCIC_BINARY" "$@"
+}
+
+# Communicate with Docker on the host machine.
+# Should rarely use this.
+function docker_host() {
+	command docker "$@"
+}
+
+# Retry a command $1 times until it succeeds. Wait $2 seconds between retries.
+function retry() {
+	local attempts=$1
+	shift
+	local delay=$1
+	shift
+	local i
+
+	for ((i=0; i < attempts; i++)); do
+		run "$@"
+		if [[ "$status" -eq 0 ]] ; then
+			return 0
+		fi
+		sleep $delay
+	done
+
+	echo "Command \"$@\" failed $attempts times. Output: $output"
+	false
+}
+
+# Waits until the given ocid becomes reachable.
+function wait_until_reachable() {
+	retry 15 1 "$OCIC_BINARY" runtimeversion
+}
+
+# Start ocid.
+function start_ocid() {
+	cp "$CONMON_BINARY" "$BATS_TMPDIR/conmon"
+	mkdir -p "$BATS_TMPDIR/ocid/containers"
+	mkdir -p "$BATS_TMPDIR/ocid/sandboxes"
+
+	"$OCID_BINARY" --debug --runtime /usr/local/bin/runc  --containerdir "$BATS_TMPDIR/ocid/containers" --sandboxdir "$BATS_TMPDIR/ocid/sandboxes" & OCID_PID=$!
+	wait_until_reachable
+}
+
+# Stop ocid.
+function stop_ocid() {
+	# TODO(runcom): why a greceful kill doesn't work?!
+	kill -9 "$OCID_PID"
+	# TODO(runcom): remove the whole /var/lib/ocid
+	rm -rf "$BATS_TMPDIR/ocid/{containers,sandboxes}"
+	# TODO(runcom): runc list and kill/delete everything!
+}