TESTS: add test for audiowmark --key and --test-key

Signed-off-by: Stefan Westerfeld <stefan@space.twc.de>

tests/Makefile.am

 check: detect-speed-test block-decoder-test clip-decoder-test \
-       pipe-test short-payload-test sync-test sample-rate-test
+       pipe-test short-payload-test sync-test sample-rate-test \
+       key-test
 
 EXTRA_DIST = detect-speed-test.sh block-decoder-test.sh clip-decoder-test.sh \
-       pipe-test.sh short-payload-test.sh sync-test.sh sample-rate-test.sh
+       pipe-test.sh short-payload-test.sh sync-test.sh sample-rate-test.sh \
+       key-test.sh
 
 detect-speed-test:
 	Q=1 $(top_srcdir)/tests/detect-speed-test.sh
@@ -24,3 +26,6 @@ sync-test:
 
 sample-rate-test:
 	Q=1 $(top_srcdir)/tests/sample-rate-test.sh
+
+key-test:
+	Q=1 $(top_srcdir)/tests/key-test.sh

tests/key-test.sh

+#!/bin/bash
+
+source test-common.sh
+
+IN_WAV=key-test.wav
+KEY1=key-test-1.key
+KEY2=key-test-2.key
+OUT1_WAV=key-test-out1.wav
+OUT2_WAV=key-test-out2.wav
+
+TEST_MSG2=0123456789abcdef0123456789abcdef
+
+audiowmark test-gen-noise $IN_WAV 30 44100
+audiowmark gen-key $KEY1
+audiowmark gen-key $KEY2
+
+audiowmark_add --key $KEY1 $IN_WAV $OUT1_WAV $TEST_MSG
+audiowmark_add --key $KEY2 $IN_WAV $OUT2_WAV $TEST_MSG2
+
+# shouldn't be able to detect watermark without correct key
+
+audiowmark_cmp --key $KEY1 --expect-matches 1 $OUT1_WAV $TEST_MSG
+audiowmark_cmp --key $KEY2 --expect-matches 0 $OUT1_WAV $TEST_MSG
+audiowmark_cmp --expect-matches 0 $OUT1_WAV $TEST_MSG
+
+audiowmark_cmp --key $KEY2 --expect-matches 1 $OUT2_WAV $TEST_MSG2
+audiowmark_cmp --key $KEY1 --expect-matches 0 $OUT2_WAV $TEST_MSG2
+audiowmark_cmp --expect-matches 0 $OUT2_WAV $TEST_MSG2
+
+rm $OUT1_WAV $OUT2_WAV
+
+# double watermark with two different keys
+audiowmark_add $IN_WAV $OUT1_WAV $TEST_MSG
+audiowmark_add --test-key 42 $OUT1_WAV $OUT2_WAV $TEST_MSG2
+
+audiowmark_cmp --expect-matches 1 $OUT2_WAV $TEST_MSG
+audiowmark_cmp --test-key 42 --expect-matches 1 $OUT2_WAV $TEST_MSG2
+
+rm $IN_WAV $KEY1 $KEY2 $OUT1_WAV $OUT2_WAV
+exit 0