1 files changed, 34 insertions, 0 deletions
diff --git a/tests-extra/tests/basic/zerobyte/test.py b/tests-extra/tests/basic/zerobyte/test.py
new file mode 100644
index 000000000..9dc736178
--- /dev/null
+++ b/tests-extra/tests/basic/zerobyte/test.py
@@ -0,0 +1,34 @@
+#!/usr/bin/env python3
+
+'''Test for zero byte in a QNAME label.'''
+
+from dnstest.test import Test
+
+t = Test()
+
+master = t.server("knot")
+zone = t.zone("test.", storage=".")
+
+t.link(zone, master)
+
+master.dnssec(zone).enable = True
+master.dnssec(zone).nsec3 = True
+master.dnssec(zone).nsec3_opt_out = True
+
+t.start()
+
+master.zone_wait(zone)
+
+resp = master.dig("psy\\000cho.test.", "A", dnssec=True)
+resp.check(rcode="NXDOMAIN")
+
+resp = master.dig("psy\\000cho\\000nxd.test.", "A", dnssec=True)
+resp.check(rcode="NXDOMAIN")
+
+resp = master.dig("exis\\000ing.test.", "A", dnssec=True)
+resp.check(rcode="NOERROR", rdata="1.2.3.4")
+
+resp = master.dig("ing.exis.test.", "A", dnssec=True)
+resp.check(rcode="NXDOMAIN", nordata="1.2.3.4")
+
+t.end()