Initial basic static delta code drop

This has a very basic level of functionality (deltas can be generated,
and applied offline).  There is only some stubbed out pull code to
fetch them via HTTP.

But, better to commit this now and improve it from a known starting
point, rather than have it languish in a branch.

1 files changed, 74 insertions, 0 deletions

diff --git a/tests/test-delta.sh b/tests/test-delta.sh
new file mode 100755
index 00000000..c5de5b40
--- /dev/null
+++ b/tests/test-delta.sh
@@ -0,0 +1,74 @@
+#!/bin/bash
+#
+# Copyright (C) 2011,2013 Colin Walters <walters@verbum.org>
+#
+# 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.
+
+set -e
+
+. $(dirname $0)/libtest.sh
+
+bindatafiles="bash true ostree"
+morebindatafiles="false ls"
+
+echo '1..2'
+
+mkdir repo
+ostree --repo=repo init --mode=archive-z2
+
+mkdir files
+for bin in ${bindatafiles}; do
+    cp $(which ${bin}) files
+done
+
+ostree --repo=repo commit -b test -s test --tree=dir=files
+
+function permuteFile() {
+    permutation=$(($1 % 2))
+    output=$2
+    case $permutation in
+	0) dd if=/dev/zero count=40 bs=1 >> $output;;
+	1) echo aheader | cat - $output >> $output.new && mv $output.new $output;;
+    esac
+}
+
+function permuteDirectory() {
+    permutation=$1
+    dir=$2
+    for x in ${dir}/*; do
+	for z in $(seq ${permutation}); do
+	    permuteFile ${z} ${x}
+	done
+    done
+}
+
+permuteDirectory 1 files
+ostree --repo=repo commit -b test -s test --tree=dir=files
+ostree static-delta --repo=repo
+
+origrev=$(ostree --repo=repo rev-parse test^)
+newrev=$(ostree --repo=repo rev-parse test)
+ostree static-delta --repo=repo --from=${origrev} --to=${newrev}
+
+assert_has_dir repo/deltas/${origrev}-${newrev}
+
+mkdir repo2
+ostree --repo=repo2 init --mode=archive-z2
+ostree --repo=repo2 pull-local repo ${origrev}
+
+ostree --repo=repo2 static-delta --apply=repo/deltas/${origrev}-${newrev}
+ostree --repo=repo2 fsck
+ostree --repo=repo2 show ${newrev}