core/conv: Add regression testing code

It tests both a given test vector encoding/decoding, and
some random coding/decoding cycles.

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
diff --git a/tests/testsuite.at b/tests/testsuite.at
index 2ea7412..237b620 100644
--- a/tests/testsuite.at
+++ b/tests/testsuite.at
@@ -15,6 +15,12 @@
 AT_CHECK([$abs_top_builddir/tests/bits/bitrev_test], [], [expout])
 AT_CLEANUP
 
+AT_SETUP([conv])
+AT_KEYWORDS([conv])
+cat $abs_srcdir/conv/conv_test.ok > expout
+AT_CHECK([$abs_top_builddir/tests/conv/conv_test], [], [expout])
+AT_CLEANUP
+
 if ENABLE_MSGFILE
 AT_SETUP([msgfile])
 AT_KEYWORDS([msgfile])