Subject: Re: [PATCH] push: respect --no-thin

From: Duy Nguyen <[email-masked]>
Date: Sat, 10 Aug 2013 18:45:15 +0700

On Sat, Aug 10, 2013 at 06:31:23AM -0400, Jeff King wrote:
> It might be nice to have a test, but I am not sure of a good way to
> check whether a push was thin. I guess we can grep the output of
> GIT_TRACE, though it feels a bit hacky.

In theory, if we have a way to tell receive-pack not to pass
--fix-thin to index-pack, then it should barf on the thin pack
received from push/send-pack. But it does not work this way, or at
least I set up the test the wrong way, or pack-objects decides not to
create deltas.. anybody sees what's wrong in this test?

-- 8< --
diff --git a/builtin/receive-pack.c b/builtin/receive-pack.c
index e3eb5fc..da60817 100644
--- a/builtin/receive-pack.c
+++ b/builtin/receive-pack.c
@@ -38,6 +38,7 @@ static int quiet;
 static int prefer_ofs_delta = 1;
 static int auto_update_server_info;
 static int auto_gc = 1;
+static int fix_thin = 1;
 static const char *head_name;
 static void *head_name_to_free;
 static int sent_capabilities;
@@ -869,7 +870,8 @@ static const char *unpack(int err_fd)
 		keeper[i++] = "--stdin";
 		if (fsck_objects)
 			keeper[i++] = "--strict";
-		keeper[i++] = "--fix-thin";
+		if (fix_thin)
+			keeper[i++] = "--fix-thin";
 		keeper[i++] = hdr_arg;
 		keeper[i++] = keep_arg;
 		keeper[i++] = NULL;
@@ -975,6 +977,10 @@ int cmd_receive_pack(int argc, const char **argv, const char *prefix)
 				stateless_rpc = 1;
 				continue;
 			}
+			if (!strcmp(arg, "--no-thin")) {
+				fix_thin = 0;
+				continue;
+			}
 
 			usage(receive_pack_usage);
 		}
diff --git a/t/t5516-fetch-push.sh b/t/t5516-fetch-push.sh
index 4691d51..9c9d43c 100755
--- a/t/t5516-fetch-push.sh
+++ b/t/t5516-fetch-push.sh
@@ -126,6 +126,16 @@ test_expect_success setup '
 
 '
 
+test_expect_success 'push --no-thin' '
+	git init no-thin &&
+	git --git-dir=no-thin/.git config receive.unpacklimit 0 &&
+	git push no-thin/.git refs/heads/master:refs/heads/foo &&
+	echo modified >> path1 &&
+	git commit -am modified &&
+	git push --no-thin --receive-pack="git receive-pack --no-thin" no-thin/.git refs/heads/master:refs/heads/foo
+	false
+'
+
 test_expect_success 'fetch without wildcard' '
 	mk_empty testrepo &&
 	(
-- 8< --