note tests that are needed

TESTS.md

@@ -0,0 +1,15 @@
+Tests todo:
+
+A - SERVFAIL - should return empty response, ra 0
+A - NXDOMAIN - should return SOA
+A - NOERROR - should return A record
+            - or delegated NS record
+
+Record delegated to self should return SOA record rather than NS delegation
+
+Casing should match on question section, always.
+
+Casing should match on other sections if a direct match? (not required, but efficient for compression pointers)
+  - www.EXample.COm + example.com = EXample.COm
+  - EXample.COm + www.example.com = www.EXample.COm
+  - (this should be taken care of by compression pointer logic, once implemented)