git p4 test: refactor marshal_dump

This function will be useful in future tests.  Move it to
the git-p4 test library.  Let it accept an optional argument
to pick a certain marshaled object out of the input stream.

Signed-off-by: Pete Wyckoff <pw@padd.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 13 insertions, 0 deletions

diff --git a/t/lib-git-p4.sh b/t/lib-git-p4.sh
index 31d75ae043..2d753ab7e1 100644
--- a/t/lib-git-p4.sh
+++ b/t/lib-git-p4.sh
@@ -102,3 +102,16 @@ cleanup_git() {
 	rm -rf "$git" &&
 	mkdir "$git"
 }
+
+marshal_dump() {
+	what=$1 &&
+	line=${2:-1} &&
+	cat >"$TRASH_DIRECTORY/marshal-dump.py" <<-EOF &&
+	import marshal
+	import sys
+	for i in range($line):
+	    d = marshal.load(sys.stdin)
+	print d['$what']
+	EOF
+	"$PYTHON_PATH" "$TRASH_DIRECTORY/marshal-dump.py"
+}