Test for HEAD method, note about IPv6

hc/api/tests/test_ping.py

@@ -26,6 +26,15 @@ class PingTestCase(TestCase):
         r = csrf_client.post("/ping/%s/" % check.code)
         assert r.status_code == 200
 
+    def test_head_works(self):
+        check = Check()
+        check.save()
+
+        csrf_client = Client(enforce_csrf_checks=True)
+        r = csrf_client.head("/ping/%s/" % check.code)
+        assert r.status_code == 200
+        assert Ping.objects.count() == 1
+
     def test_it_handles_bad_uuid(self):
         r = self.client.get("/ping/not-uuid/")
         assert r.status_code == 400

templates/front/docs.html

@@ -23,7 +23,8 @@ It is all very simple, really.</p>
 </p>
 <ul>
     <li>HTTP and HTTPS protocols both are fine</li>
-    <li>Request method can be GET or POST</li>
+    <li>Request method can be GET, POST or HEAD</li>
+    <li>Both IPv4 and IPv6 work</li>
     <li>It does not matter what request headers you send</li>
     <li>You can leave request body empty or put anything in it, it's all good</li>
 </ul>