Add a CNAME loop test to integration (#399)

* added cname loop integration test

* undo zdns integration test rename

* remove integration test from another branch

---------

Co-authored-by: Zakir Durumeric <zakird@gmail.com>

testing/integration_tests.py

@@ -372,6 +372,20 @@ def run_zdns_multiline(self, flags, names, executable=ZDNS_EXECUTABLE):
         }
     ]
 
+    CNAME_LOOP_ANSWERS = [
+        {
+            "type": "CNAME",
+            "class": "IN",
+            "name": "cname-loop.zdns-testing.com",
+            "answer": "cname-loop.esrg.stanford.edu.",
+        }, {
+            "type": "CNAME",
+            "class": "IN",
+            "name": "cname-loop.esrg.stanford.edu",
+            "answer": "cname-loop.zdns-testing.com.",
+        }
+    ]
+
     # an A record behind a DNAME record
     DNAME_A_RECORD_ANSWERS = [
         {
@@ -574,29 +588,6 @@ def test_cname(self):
         self.assertSuccess(res, cmd)
         self.assertEqualAnswers(res, self.WWW_CNAME_ANSWERS, cmd)
 
-    def test_dname(self):
-        c = "DNAME --iterative"
-        name = "zdns-dname.esrg.stanford.edu"
-        cmd, res = self.run_zdns(c, name)
-        self.assertSuccess(res, cmd)
-        self.assertEqual(res["data"]["answers"][0]["type"], "DNAME")
-        self.assertEqual(res["data"]["answers"][0]["name"], "zdns-dname.esrg.stanford.edu")
-        self.assertEqual(res["data"]["answers"][0]["answer"], "zdns-testing.com.")
-
-    # Test for A record behind a DNAME record
-    # There exists the following records:
-    # a.zdns-dname.esrg.stanford.edu    A           56.78.90.12
-    # a.zdns-testing.com                A           21.9.87.65
-    # zdns-dname.esrg.stanford.edu      DNAME       zdns-testing.com.
-    #
-    # The query is for a.zdns-dname.esrg.stanford.edu and should return an A record stating "21.9.87.65"
-    def test_a_record_behind_dname(self):
-        c = "A --iterative"
-        name = "a.zdns-dname.esrg.stanford.edu"
-        cmd, res = self.run_zdns(c, name)
-        self.assertSuccess(res, cmd)
-        self.assertEqualAnswers(res, self.DNAME_A_RECORD_ANSWERS, cmd)
-
     def test_caa(self):
         c = "CAA"
         name = "zdns-testing.com"