[PATCH v2 16/36] t0500: add 'put_raw_obj' instruction to odb-helper script

[Christian Couder <christian.couder@gmail.com>]

To properly test passing objects from Git to an external odb
we need an odb-helper script that supports a 'put'
capability/instruction.

For now we will support only sending raw blobs, so the
supported capability/instruction will be 'put_raw_obj'.

While at it let's add a test to check that our odb-helper
script works well.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
---
 t/t0500-external-odb.sh | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/t/t0500-external-odb.sh b/t/t0500-external-odb.sh
index 977fea852d..4ccca1e965 100755
--- a/t/t0500-external-odb.sh
+++ b/t/t0500-external-odb.sh
@@ -7,10 +7,15 @@ test_description='basic tests for external object databases'
 ALT_SOURCE="$PWD/alt-repo/.git"
 export ALT_SOURCE
 write_script odb-helper <<\EOF
+die() {
+	printf >&2 "%s\n" "$@"
+	exit 1
+}
 GIT_DIR=$ALT_SOURCE; export GIT_DIR
 case "$1" in
 init)
 	echo "capability=get_git_obj"
+	echo "capability=put_raw_obj"
 	echo "capability=have"
 	;;
 have)
@@ -20,6 +25,16 @@ have)
 get_git_obj)
 	cat "$GIT_DIR"/objects/$(echo $2 | sed 's#..#&/#')
 	;;
+put_raw_obj)
+	sha1="$2"
+	size="$3"
+	kind="$4"
+	written=$(git hash-object -w -t "$kind" --stdin)
+	test "$written" = "$sha1" || die "bad sha1 passed '$sha1' vs written '$written'"
+	;;
+*)
+	die "unknown command '$1'"
+	;;
 esac
 EOF
 HELPER="\"$PWD\"/odb-helper"
@@ -45,4 +60,13 @@ test_expect_success 'helper can retrieve alt objects' '
 	test_cmp expect actual
 '
 
+test_expect_success 'helper can add objects to alt repo' '
+	hash=$(echo "Hello odb!" | git hash-object -w -t blob --stdin) &&
+	test -f .git/objects/$(echo $hash | sed "s#..#&/#") &&
+	size=$(git cat-file -s "$hash") &&
+	git cat-file blob "$hash" | ./odb-helper put_raw_obj "$hash" "$size" blob &&
+	alt_size=$(git -C alt-repo cat-file -s "$hash") &&
+	test "$size" -eq "$alt_size"
+'
+
 test_done
-- 
2.17.0.rc0.37.g8f476fabe9