test-getuto.sh: create simple test script

* Fetches simple binpkg
* Runs getuto in a temporary directory
* Verifies the binpkg against the new keyring

Signed-off-by: Sam James <sam@gentoo.org>

Makefile

@@ -0,0 +1,5 @@
+libc-1-r1-1.gpkg.tar:
+	wget https://mirror.bytemark.co.uk/gentoo/releases/amd64/binpackages/17.1/x86-64/virtual/libc/libc-1-r1-1.gpkg.tar -O libc-1-r1-1.gpkg.tar
+
+check: getuto test-getuto.sh libc-1-r1-1.gpkg.tar
+	./test-getuto.sh

test-getuto.sh

@@ -0,0 +1,27 @@
+#!/bin/bash
+set -x -e
+
+whoami() {
+	# Bypass getuto's check for root as we're going to run in a fake tempdir.
+	echo root
+}
+
+export -f whoami
+# Keep the real root around before we override its value so we can grab a copy of
+# gentoo-release.asc.
+export REAL_ROOT="${ROOT%/}"
+export ROOT="$(mktemp -d)"
+
+mkdir -p "${ROOT}"/usr/share/openpgp-keys
+ln -s "${REAL_ROOT}"/usr/share/openpgp-keys/gentoo-release.asc "${ROOT}"/usr/share/openpgp-keys/gentoo-release.asc
+
+# Generate a keyring using getuto.
+./getuto
+
+# Make sure the newly-generated keyring works.
+export GNUPGHOME="${ROOT%/}"/etc/portage/gnupg
+mkdir -p "${ROOT}"/tmp/binpkg
+tar xvf libc-1-r1-1.gpkg.tar -C "${ROOT}"/tmp/binpkg
+for file in image.tar.bz2 metadata.tar.bz2 ; do
+	gpg --verify "${ROOT}"/tmp/binpkg/libc-1-r1-1/${file}.sig
+done