tests: Add a simple test suite for --echo option

The fancy thing about this is that it uses the actual echo output to
undo the changes to the rule set.

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

1 files changed, 45 insertions, 0 deletions

diff --git a/tests/echo/run-tests.sh b/tests/echo/run-tests.sh
new file mode 100755
index 00000000..da7934d1
--- /dev/null
+++ b/tests/echo/run-tests.sh
@@ -0,0 +1,45 @@
+#!/bin/bash
+
+cd $(dirname $0)
+nft=../../src/nft
+nft_opts="-nn -a --echo"
+debug=false
+
+debug_echo() {
+	$debug || return
+
+	echo "$@"
+}
+
+trap "$nft flush ruleset" EXIT
+
+for testcase in testcases/*.t; do
+	echo "running tests from file $(basename $testcase)"
+	# files are like this:
+	#
+	# <input command>[;;<output regexp>]
+
+	$nft flush ruleset
+
+	while read line; do
+		[[ -z "$line" || "$line" == "#"* ]] && continue
+
+		# XXX: this only works if there is no semicolon in output
+		input="${line%;;*}"
+		output="${line##*;;}"
+
+		[[ -z $output ]] && output="$input"
+
+		debug_echo "calling '$nft $nft_opts $input'"
+		cmd_out=$($nft $nft_opts $input)
+		# strip trailing whitespace (happens when adding a named set)
+		cmd_out="${cmd_out% }"
+		debug_echo "got output '$cmd_out'"
+		[[ $cmd_out == $output ]] || {
+			echo "Warning: Output differs:"
+			echo "# nft $nft_opts $input"
+			echo "- $output"
+			echo "+ $cmd_out"
+		}
+	done <$testcase
+done