From dbd57f99680eac33626d5058459efd7f118f5170 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Nguy=E1=BB=85n=20Th=C3=A1i=20Ng=E1=BB=8Dc=20Duy?=
 <pclouds@gmail.com>
Date: Thu, 20 Aug 2009 20:46:56 +0700
Subject: [PATCH] Add test-index-version
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Commit 06aaaa0bf70fe37d198893f4e25fa73b6516f8a9 may step index format
version up and down, depends on whether extended flags present in the
index. This adds a test to check for index format version.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
 .gitignore           |  1 +
 Makefile             |  1 +
 test-index-version.c | 14 ++++++++++++++
 3 files changed, 16 insertions(+)
 create mode 100644 test-index-version.c

diff --git a/.gitignore b/.gitignore
index 41c0b20a7..e3a864c0a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -153,6 +153,7 @@ test-date
 test-delta
 test-dump-cache-tree
 test-genrandom
+test-index-version
 test-match-trees
 test-parse-options
 test-path-utils
diff --git a/Makefile b/Makefile
index daf429670..3c5b89022 100644
--- a/Makefile
+++ b/Makefile
@@ -1580,6 +1580,7 @@ TEST_PROGRAMS += test-parse-options$X
 TEST_PROGRAMS += test-path-utils$X
 TEST_PROGRAMS += test-sha1$X
 TEST_PROGRAMS += test-sigchain$X
+TEST_PROGRAMS += test-index-version$X
 
 all:: $(TEST_PROGRAMS)
 
diff --git a/test-index-version.c b/test-index-version.c
new file mode 100644
index 000000000..bfaad9e09
--- /dev/null
+++ b/test-index-version.c
@@ -0,0 +1,14 @@
+#include "cache.h"
+
+int main(int argc, const char **argv)
+{
+	struct cache_header hdr;
+	int version;
+
+	memset(&hdr,0,sizeof(hdr));
+	if (read(0, &hdr, sizeof(hdr)) != sizeof(hdr))
+		return 0;
+	version = ntohl(hdr.hdr_version);
+	printf("%d\n", version);
+	return 0;
+}
-- 
2.30.2