tests: Add basic monitor testing framework

This implements testing of 'nft monitor' output correctness and adds a
number of testcases for named sets.

Signed-off-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

1 files changed, 78 insertions, 0 deletions

diff --git a/tests/monitor/run-tests.sh b/tests/monitor/run-tests.sh
new file mode 100755
index 00000000..7447adf1
--- /dev/null
+++ b/tests/monitor/run-tests.sh
@@ -0,0 +1,78 @@
+#!/bin/bash
+
+cd $(dirname $0)
+
+testdir=$(mktemp -d)
+if [ ! -d $testdir ]; then
+	echo "Failed to create test directory" >&2
+	exit 0
+fi
+trap "rm -rf $testdir" EXIT
+
+nft=../../src/nft
+command_file=$(mktemp -p $testdir)
+output_file=$(mktemp -p $testdir)
+
+cmd_append() {
+	echo "$*" >>$command_file
+}
+output_append() {
+	echo "$*" >>$output_file
+}
+run_test() {
+	monitor_output=$(mktemp -p $testdir)
+	$nft monitor >$monitor_output &
+	monitor_pid=$!
+
+	sleep 0.5
+
+	$nft -f $command_file || {
+		echo "nft command failed!"
+		kill $monitor_pid
+		wait >/dev/null 2>&1
+		exit 1
+	}
+	sleep 0.5
+	kill $monitor_pid
+	wait >/dev/null 2>&1
+	if ! diff -Z -q $monitor_output $output_file >/dev/null 2>&1; then
+		echo "monitor output differs!"
+		diff -Z -u $output_file $monitor_output
+		exit 1
+	fi
+	rm $command_file
+	rm $output_file
+	touch $command_file
+	touch $output_file
+}
+
+for testcase in testcases/*.t; do
+	echo "running tests from file $(basename $testcase)"
+	# files are like this:
+	#
+	# I add table ip t
+	# O add table ip t
+	# I add chain ip t c
+	# O add chain ip t c
+
+	$nft flush ruleset
+
+	input_complete=false
+	while read dir line; do
+		case $dir in
+		I)
+			$input_complete && run_test
+			input_complete=false
+			cmd_append "$line"
+			;;
+		O)
+			input_complete=true
+			output_append "$line"
+			;;
+		'#'|'')
+			# ignore comments and empty lines
+			;;
+		esac
+	done <$testcase
+	$input_complete && run_test
+done