ostree/summary: Add support for adding additional metadata

When updating a summary file, parse additional arguments to the `ostree
summary` command as additional metadata to be put into the summary.

Add some tests for this.

Signed-off-by: Philip Withnall <withnall@endlessm.com>

Closes: #961
Approved by: cgwalters

tests/test-summary-update.sh

@@ -0,0 +1,94 @@
+#!/bin/bash
+#
+# Copyright © 2017 Endless Mobile, Inc.
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2 of the License, or (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the
+# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+# Boston, MA 02111-1307, USA.
+#
+# Authors:
+#  - Philip Withnall <withnall@endlessm.com>
+
+set -euo pipefail
+
+. $(dirname $0)/libtest.sh
+
+echo "1..2"
+
+cd ${test_tmpdir}
+mkdir repo
+ostree_repo_init repo
+
+mkdir -p tree/root
+touch tree/root/a
+
+# Add a few commits
+seq 5 | while read i; do
+    echo a >> tree/root/a
+    ${CMD_PREFIX} ostree --repo=repo commit --branch=test-$i -m test -s test tree
+done
+
+# Generate a plain summary file.
+${CMD_PREFIX} ostree --repo=repo summary --update
+
+# Generate a signed summary file.
+${CMD_PREFIX} ostree --repo=repo summary --update --gpg-homedir=${TEST_GPG_KEYHOME} --gpg-sign=${TEST_GPG_KEYID_1}
+
+# Try various ways of adding additional data.
+${CMD_PREFIX} ostree --repo=repo summary --update --add-metadata key="'value'" --add-metadata=key2=true
+${CMD_PREFIX} ostree --repo=repo summary --update -m some-int='@t 123'
+${CMD_PREFIX} ostree --repo=repo summary --update --add-metadata=map='@a{sv} {}'
+
+# Check the additional metadata turns up in the output.
+${CMD_PREFIX} ostree --repo=repo summary --view > summary
+assert_file_has_content summary "^map: {}$"
+
+echo "ok 1 update summary"
+
+# Test again, but with collections enabled in the repository (if supported).
+if ! ostree --version | grep -q -e '- experimental'; then
+    echo "ok 2 # skip No experimental API is compiled in"
+    exit 0
+fi
+
+cd ${test_tmpdir}
+rm -rf repo
+ostree_repo_init repo --collection-id org.example.Collection1
+
+mkdir -p tree/root
+touch tree/root/a
+
+# Add a few commits
+seq 5 | while read i; do
+    echo a >> tree/root/a
+    ${CMD_PREFIX} ostree --repo=repo commit --branch=test-$i -m test -s test tree
+    ${CMD_PREFIX} ostree --repo=repo refs --collections --create=org.example.Collection2:test-$i test-$i
+done
+
+# Generate a plain summary file.
+${CMD_PREFIX} ostree --repo=repo summary --update
+
+# Generate a signed summary file.
+${CMD_PREFIX} ostree --repo=repo summary --update --gpg-homedir=${TEST_GPG_KEYHOME} --gpg-sign=${TEST_GPG_KEYID_1}
+
+# Try various ways of adding additional data.
+${CMD_PREFIX} ostree --repo=repo summary --update --add-metadata key="'value'" --add-metadata=key2=true
+${CMD_PREFIX} ostree --repo=repo summary --update -m some-int='@t 123'
+${CMD_PREFIX} ostree --repo=repo summary --update --add-metadata=map='@a{sv} {}'
+
+# Check the additional metadata turns up in the output.
+${CMD_PREFIX} ostree --repo=repo summary --view > summary
+assert_file_has_content summary "^map: {}$"
+
+echo "ok 2 update summary with collections"