[ostree] tests: Add a test for static-delta apply-offline

[Colin Walters <walters src gnome org>]

commit 27fcf68e7c12f8ade32e0cc8860e3533a3da52b5
Author: Colin Walters <walters verbum org>
Date:   Sun Sep 13 21:35:10 2015 -0400

    tests: Add a test for static-delta apply-offline
    
    Obviously it was broken...

 tests/test-delta.sh |   45 ++++++++++++++++++++++++++++++++++++++++++---
 1 files changed, 42 insertions(+), 3 deletions(-)
---
diff --git a/tests/test-delta.sh b/tests/test-delta.sh
index fe2f4aa..9760a57 100755
--- a/tests/test-delta.sh
+++ b/tests/test-delta.sh
@@ -24,7 +24,7 @@ set -e
 bindatafiles="bash true ostree"
 morebindatafiles="false ls"
 
-echo '1..2'
+echo '1..3'
 
 mkdir repo
 ostree --repo=repo init --mode=archive-z2
@@ -78,6 +78,45 @@ if ${CMD_PREFIX} ostree --repo=repo static-delta generate --from=${origrev} --to
     assert_not_reached "static-delta generate --from=${origrev} --empty unexpectedly succeeded"
 fi
 
-mkdir repo2
-ostree --repo=repo2 init --mode=archive-z2
+echo 'ok generate'
+
+mkdir repo2 && ostree --repo=repo2 init --mode=archive-z2
+ostree --repo=repo2 pull-local repo ${newrev}
+ostree --repo=repo2 fsck
+ostree --repo=repo2 ls ${newrev} >/dev/null
+
+echo 'ok pull delta'
+
+rm repo2 -rf
+mkdir repo2 && ostree --repo=repo2 init --mode=bare-user
+mkdir deltadir
+
+get_assert_one_direntry_matching() {
+    local path=$1
+    local r=$2
+    local child=""
+    local bn
+    for p in ${path}/*; do
+       bn=$(basename $p)
+       if ! echo ${bn} | grep -q "$r"; then
+           continue
+       fi
+       if test -z "${child}"; then
+           child=${bn}
+       else
+           assert_not_reached "Expected only one child matching ${r} in ${path}";
+       fi
+    done
+    if test -z "${child}"; then
+       assert_not_reached "Failed to find child matching ${r}"
+    fi
+    echo ${child}
+}
+
+deltaprefix=$(get_assert_one_direntry_matching repo/deltas '.')
+deltadir=$(get_assert_one_direntry_matching repo/deltas/${deltaprefix} '-')
 ostree --repo=repo2 pull-local repo ${origrev}
+ostree --repo=repo2 ls ${origrev} >/dev/null
+ostree --repo=repo2 static-delta apply-offline repo/deltas/${deltaprefix}/${deltadir}
+ostree --repo=repo2 fsck
+ostree --repo=repo2 ls ${newrev} >/dev/null