debian: Hook the functional test suite into autopkgtest

We add two tests, one for normal user and directory root operation, and
another one for unprivileged and DPKG_ROOT operation.

Makefile.am

@@ -94,6 +94,8 @@ EXTRA_DIST = \
 	debian/shlibs.default \
 	debian/shlibs.override \
 	debian/tests/control \
+	debian/tests/test-func \
+	debian/tests/test-func-root \
 	debian/tests/test-not-root \
 	debian/tests/test-root \
 	po/its/polkit.its \

debian/tests/control

@@ -5,3 +5,11 @@ Restrictions: superficial skippable
 Tests: test-root
 Depends: build-essential, autoconf, pkg-config, file
 Restrictions: superficial needs-root breaks-testbed
+
+Tests: test-func
+Depends: @, eatmydata
+Restrictions: allow-stderr
+
+Tests: test-func-root
+Depends: @, eatmydata
+Restrictions: allow-stderr needs-root breaks-testbed

debian/tests/test-func

@@ -0,0 +1,10 @@
+#!/bin/sh
+
+set -e
+
+export DPKG_TESTSUITE_OPTIONS="debug"
+export DPKG_ADMINDIR="$AUTOPKGTEST_TMP/db"
+export DPKG_INSTDIR="$AUTOPKGTEST_TMP/root"
+
+tests/db-regen "$DPKG_ADMINDIR" "$DPKG_INSTDIR"
+eatmydata make -C tests test DPKG_INSTDIR="$DPKG_INSTDIR" DPKG_ADMINDIR="$DPKG_ADMINDIR"

debian/tests/test-func-root

@@ -0,0 +1,14 @@
+#!/bin/sh
+
+set -e
+
+if [ "$(id -u)" != '0' ]; then
+  # Fail, we declared needing root as a restriction.
+  exit 1
+fi
+
+export DPKG_TESTSUITE_OPTIONS="debug as-root"
+export DPKG_ADMINDIR="$AUTOPKGTEST_TMP/db"
+
+tests/db-regen "$DPKG_ADMINDIR" "/"
+eatmydata make -C tests test DPKG_ADMINDIR="$DPKG_ADMINDIR"