[PATCH GSoC v2 5/6] serve: advertise type capability

[Pablo Sabater <pabloosabaterr@gmail.com>]

The server and the client can handle type requests but the client won't
ask for it until the server advertises it.

Add type to the advertised capabilities so the client knows that it can
request it.

Mentored-by: Karthik Nayak <karthik.188@gmail.com>
Mentored-by: Chandra Pratap <chandrapratap3519@gmail.com>
Signed-off-by: Pablo Sabater <pabloosabaterr@gmail.com>
---
 serve.c                                |  4 ++--
 t/t1017-cat-file-remote-object-info.sh | 26 ++++++++++++++++++++++----
 2 files changed, 24 insertions(+), 6 deletions(-)

diff --git a/serve.c b/serve.c
index 2b07d922b3..2ce513cf2d 100644
--- a/serve.c
+++ b/serve.c
@@ -97,9 +97,9 @@ static int object_info_advertise(struct repository *r, struct strbuf *value)
 		/* disabled by default */
 		advertise_object_info = 0;
 	}
-	/* Currently only size is supported */
+	/* Currently only size and type are supported */
 	if (value && advertise_object_info)
-		strbuf_addstr(value, "size");
+		strbuf_addstr(value, "size type");
 	return advertise_object_info;
 }
 
diff --git a/t/t1017-cat-file-remote-object-info.sh b/t/t1017-cat-file-remote-object-info.sh
index 116862f9d0..93a70f65b7 100755
--- a/t/t1017-cat-file-remote-object-info.sh
+++ b/t/t1017-cat-file-remote-object-info.sh
@@ -7,6 +7,7 @@ test_description='git cat-file --batch-command with remote-object-info command'
 
 hello_content="Hello World"
 hello_size=$(strlen "$hello_content")
+hello_type="blob"
 hello_oid=$(echo_without_newline "$hello_content" | git hash-object --stdin)
 hello_short_oid=$(git rev-parse --short "$hello_oid")
 
@@ -19,6 +20,7 @@ unstored_oid=$(echo_without_newline "$unstored_content" | git hash-object --stdi
 # file name is hello, which is 5 characters
 # a space is 1 character and a null is 1 character
 tree_size=$(($(test_oid rawsz) + 13))
+tree_type="tree"
 
 commit_message="Initial commit"
 
@@ -31,6 +33,7 @@ commit_message="Initial commit"
 # An easier way to calculate is: 1. use `git cat-file commit <commit hash> | wc -c`,
 # to get 177, 2. then deduct 40 hex characters to get 137
 commit_size=$(($(test_oid hexsz) + 137))
+commit_type="commit"
 
 tag_header_without_oid="type blob
 tag hellotag
@@ -44,6 +47,7 @@ $tag_description"
 
 tag_oid=$(echo_without_newline "$tag_content" | git hash-object -t tag --stdin -w)
 tag_size=$(strlen "$tag_content")
+tag_type="tag"
 
 set_transport_variables () {
 	hello_oid=$(echo_without_newline "$hello_content" | git hash-object --stdin)
@@ -256,14 +260,12 @@ test_expect_success 'remote-object-info does not die on missing oid like info' '
 	)
 '
 
-# This tests depends on %(objecttype) not being supported yet, once supported
-# it needs to be updated.
-test_expect_success 'unsupported placeholder on remote returns empty string' '
+test_expect_success 'objecttype is supported by remote-object-info' '
 	(
 		set_transport_variables "$daemon_parent" &&
 		cd "$daemon_parent/daemon_client_empty" &&
 
-		echo "" >expect &&
+		echo $hello_type >expect &&
 		git cat-file --batch-command="%(objecttype)" >actual <<-EOF &&
 		remote-object-info "$GIT_DAEMON_URL/parent" $hello_oid
 		EOF
@@ -271,6 +273,22 @@ test_expect_success 'unsupported placeholder on remote returns empty string' '
 	)
 '
 
+test_expect_success 'unsupported placeholders on remote return empty string' '
+	(
+		set_transport_variables "$daemon_parent" &&
+		cd "$daemon_parent/daemon_client_empty" &&
+
+		fmt="%(objectmode) %(objectsize:disk) %(rest) %(deltabase)" &&
+
+		# The hardcoded SPs between the atoms are respected.
+		echo "   " >expect &&
+		git cat-file --batch-command="$fmt" >actual <<-EOF &&
+		remote-object-info "$GIT_DAEMON_URL/parent" $hello_oid
+		EOF
+		test_cmp expect actual
+	)
+'
+
 test_expect_success 'requesting only objectname echoes back' '
 	(
 		set_transport_variables "$daemon_parent" &&

-- 
2.54.0