[1608] added a new test: wildcard expansion. not work for in-memory for now.

src/lib/datasrc/tests/testdata/contexttest.zone

@@ -1,7 +1,7 @@
 ;; test zone file used for ZoneFinderContext tests.
 ;; RRSIGs are (obviouslly) faked ones for testing.
 
-example.org. 3600 IN SOA	ns1.example.org. bugs.x.w.example.org. 52 3600 300 3600000 3600
+example.org. 3600 IN SOA	ns1.example.org. bugs.x.w.example.org. 55 3600 300 3600000 3600
 example.org.			      3600 IN NS	ns1.example.org.
 example.org.			      3600 IN NS	ns2.example.org.
 example.org.			      3600 IN MX	1 mx1.example.org.
@@ -57,6 +57,10 @@ d.example.org. 	      	      3600 IN NS	ns1.example.org.
 foo.ns.empty.example.org.     3600 IN A		192.0.2.13
 bar.ns.empty.example.org.     3600 IN A		192.0.2.14
 
+;; delegation; the NS name matches a wildcard (and there's no exact match)
+e.example.org. 	      	      3600 IN NS	ns.wild.example.org.
+*.wild.example.org.	      3600 IN A		192.0.2.15
+
 ;; CNAME
 alias.example.org. 3600 IN CNAME cname.example.org.
 

src/lib/datasrc/tests/zone_finder_context_unittest.cc

@@ -261,6 +261,21 @@ TEST_P(ZoneFinderContextTest, getAdditionalDelegationWithEmptyName) {
                 result_sets_.begin(), result_sets_.end());
 }
 
+TEST_P(ZoneFinderContextTest, getAdditionalDelegationWithWild) {
+    // The NS name needs to be expanded by a wildcard.  Currently it doesn't
+    // work for the optimized in-memory version.
+    if (GetParam() == createInMemoryClient) {
+        return;
+    }
+
+    ZoneFinderContextPtr ctx = finder_->find(Name("www.e.example.org"),
+                                             RRType::AAAA());
+    EXPECT_EQ(ZoneFinder::DELEGATION, ctx->code);
+    ctx->getAdditional(REQUESTED_BOTH, result_sets_);
+    rrsetsCheck("ns.wild.example.org. 3600 IN A 192.0.2.15\n",
+                result_sets_.begin(), result_sets_.end());
+}
+
 TEST_P(ZoneFinderContextTest, getAdditionalMX) {
     // Similar to the previous cases, but for MX addresses.  The test zone
     // contains MX name under a zone cut.  Its address shouldn't be returned.