Add tests for is_entity_header and is_hop_by_hop_header helper functions (#1410)

tests/test_helpers.py

@@ -1,4 +1,4 @@
-from sanic.helpers import has_message_body
+from sanic import helpers
 
 
 def test_has_message_body():
@@ -11,4 +11,26 @@ def test_has_message_body():
         (400, True),
     )
     for status_code, expected in tests:
-        assert has_message_body(status_code) is expected
+        assert helpers.has_message_body(status_code) is expected
+
+
+def test_is_entity_header():
+    tests = (
+        ("allow", True),
+        ("extension-header", True),
+        ("", False),
+        ("test", False),
+    )
+    for header, expected in tests:
+        assert helpers.is_entity_header(header) is expected
+
+
+def test_is_hop_by_hop_header():
+    tests = (
+        ("connection", True),
+        ("upgrade", True),
+        ("", False),
+        ("test", False),
+    )
+    for header, expected in tests:
+        assert helpers.is_hop_by_hop_header(header) is expected