[2108] Multiple CNAME RRs should throw

src/lib/datasrc/memory/tests/memory_client_unittest.cc

@@ -234,6 +234,15 @@ TEST_F(MemoryClientTest, loadDuplicateType) {
     // Teardown checks for memory segment leaks
 }
 
+TEST_F(MemoryClientTest, loadMultipleCNAME) {
+    // Multiple CNAME RRs should throw.
+    EXPECT_THROW(client_->load(Name("example.org"),
+                               TEST_DATA_DIR
+                               "/example.org-multiple-cname.zone"),
+                 InMemoryClient::AddError);
+    // Teardown checks for memory segment leaks
+}
+
 TEST_F(MemoryClientTest, loadRRSIGFollowsNothing) {
     EXPECT_THROW(client_->load(Name("example.org"),
                                TEST_DATA_DIR

src/lib/datasrc/memory/tests/testdata/Makefile.am

@@ -11,3 +11,4 @@ EXTRA_DIST += example.org-rrsig-type-unmatched.zone
 EXTRA_DIST += example.org-rrsigs.zone
 EXTRA_DIST += example.org-duplicate-type.zone
 EXTRA_DIST += example.org-duplicate-type-bad.zone
+EXTRA_DIST += example.org-multiple-cname.zone

src/lib/datasrc/memory/tests/testdata/example.org-multiple-cname.zone

@@ -0,0 +1,3 @@
+example.org. 3600 IN SOA	ns1.example.org. bugs.x.w.example.org. 78 3600 300 3600000 3600
+ns1.example.org.		      3600 IN CNAME	foo.example.com.
+ns1.example.org.		      3600 IN CNAME	bar.example.com.