[PATCH nft v3 6/6] tools: check for consistency of .json-nft dumps in "check-tree.sh"

[Thomas Haller <thaller@redhat.com>]

Add checks for the newly introduced .json-nft dump files.

Optimally, every test that has a .nft dump should also have a .json-nft
dump, and vice versa.

However, currently some JSON tests fail to validate, and are missing.
Only flag those missing files as warning, without failing the script.
The reason to warn about this, is that we really should fix those tests,
and having a annoying warning increases the pressure and makes it
discoverable.

Signed-off-by: Thomas Haller <thaller@redhat.com>
---
 tools/check-tree.sh | 21 ++++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/tools/check-tree.sh b/tools/check-tree.sh
index 4be874fcd85e..e358c957857e 100755
--- a/tools/check-tree.sh
+++ b/tools/check-tree.sh
@@ -41,6 +41,7 @@ check_shell_dumps() {
 	local base="$(basename "$TEST")"
 	local dir="$(dirname "$TEST")"
 	local has_nft=0
+	local has_jnft=0
 	local has_nodump=0
 	local nft_name
 	local nodump_name
@@ -51,9 +52,11 @@ check_shell_dumps() {
 	fi
 
 	nft_name="$dir/dumps/$base.nft"
+	jnft_name="$dir/dumps/$base.json-nft"
 	nodump_name="$dir/dumps/$base.nodump"
 
 	[ -f "$nft_name" ] && has_nft=1
+	[ -f "$jnft_name" ] && has_jnft=1
 	[ -f "$nodump_name" ] && has_nodump=1
 
 	if [ "$has_nft" != 1 -a "$has_nodump" != 1 ] ; then
@@ -63,6 +66,22 @@ check_shell_dumps() {
 	elif [ "$has_nodump" == 1 -a -s "$nodump_name" ] ; then
 		msg_err "\"$TEST\" has a non-empty \"$dir/dumps/$base.nodump\" file"
 	fi
+	if [ "$has_jnft" = 1 -a "$has_nft" != 1 ] ; then
+		msg_err "\"$TEST\" has a JSON dump file \"$jnft_name\" but lacks a dump \"$nft_name\""
+	fi
+	if [ "$has_nft" = 1 -a "$has_jnft" != 1 ] ; then
+		# it's currently known that `nft -j --check` cannot parse all dumped rulesets.
+		# Accept having no JSON dump file.
+		#
+		# This should be fixed. Currently this is only a warning.
+		msg_warn "\"$TEST\" has a dump file \"$nft_name\" but lacks a JSON dump \"$jnft_name\""
+	fi
+
+	if [ "$has_jnft" = 1 ] && command -v jq &>/dev/null ; then
+		if ! jq empty < "$jnft_name" &>/dev/null ; then
+			msg_err "\"$TEST\" has a JSON dump file \"$jnft_name\" that does not validate with \`jq empty < \"$jnft_name\"\`"
+		fi
+	fi
 }
 
 SHELL_TESTS=( $(find "tests/shell/testcases/" -type f -executable | sort) )
@@ -91,7 +110,7 @@ fi
 
 ##############################################################################
 #
-F=( $(find tests/shell/testcases/ -type f | grep '^tests/shell/testcases/[^/]\+/dumps/[^/]\+\.\(nft\|nodump\)$' -v | sort) )
+F=( $(find tests/shell/testcases/ -type f | grep '^tests/shell/testcases/[^/]\+/dumps/[^/]\+\.\(json-nft\|nft\|nodump\)$' -v | sort) )
 IGNORED_FILES=( tests/shell/testcases/bogons/nft-f/* )
 for f in "${F[@]}" ; do
 	if ! array_contains "$f" "${SHELL_TESTS[@]}" "${IGNORED_FILES[@]}" ; then
-- 
2.41.0