test: add fuzzing check script to tests

Add a test script that runs the fuzzing command over the
corpus of DNS packets.  This doesn't actually do any fuzzing
(it just runs them as inputs without generating any variations)
but it does ensure that the fuzzing entrypoint is still working.

test/.gitignore

@@ -5,6 +5,8 @@ arestest
 aresfuzz
 arestest.log
 arestest.trs
+fuzzcheck.sh.log
+fuzzcheck.sh.trs
 test-suite.log
 fuzzoutput
 config.h.in

test/Makefile.am

@@ -13,7 +13,7 @@ CXXFLAGS += -Wall $(PTHREAD_CFLAGS)
 # Makefile.inc provides the TESTSOURCES, TESTHEADERS and FUZZSOURCES defines
 include Makefile.inc
 
-TESTS = arestest
+TESTS = arestest fuzzcheck.sh
 
 noinst_PROGRAMS = arestest aresfuzz dnsdump
 arestest_SOURCES = $(TESTSOURCES) $(TESTHEADERS)

test/fuzzcheck.sh

@@ -0,0 +1,3 @@
+#!/bin/sh
+# Check that all of the base fuzzing corpus parse without errors
+./aresfuzz fuzzinput/*