tests: use extensive coverage from make's test and system-test

debian/tests/setup

@@ -0,0 +1,20 @@
+#!/bin/sh
+
+set -eux
+
+TMP_DIR="$(mktemp -d)"
+APTLY_SRC_DIR="${TMP_DIR}/src/github.com/aptly-dev/aptly"
+
+# apply patches
+dpkg-source --before-build .
+
+# copy source to GOPATH-compatible dir
+mkdir -p $(dirname $APTLY_SRC_DIR)
+cp -a . $APTLY_SRC_DIR
+
+# not in a git tree, so we need to generate the version ourselves
+dpkg-parsechangelog --show-field Version | perl -pe 's/\n//' > ${APTLY_SRC_DIR}/VERSION
+
+# use only apt-supplied go libraries
+export GOPATH="${TMP_DIR}:/usr/share/gocode"
+export GO111MODULE=off