RAHHH

backend/lib/python3.12/site-packages/twisted/names/test/test_resolve.py

@@ -0,0 +1,36 @@
+# Copyright (c) Twisted Matrix Laboratories.
+# See LICENSE for details.
+
+"""
+Tests for L{twisted.names.resolve}.
+"""
+
+from twisted.names.error import DomainError
+from twisted.names.resolve import ResolverChain
+from twisted.trial.unittest import TestCase
+
+
+class ResolverChainTests(TestCase):
+    """
+    Tests for L{twisted.names.resolve.ResolverChain}
+    """
+
+    def test_emptyResolversList(self) -> None:
+        """
+        L{ResolverChain._lookup} returns a L{DomainError} failure if
+        its C{resolvers} list is empty.
+        """
+        r = ResolverChain([])
+        d = r.lookupAddress("www.example.com")
+        f = self.failureResultOf(d)
+        self.assertIs(f.trap(DomainError), DomainError)
+
+    def test_emptyResolversListLookupAllRecords(self) -> None:
+        """
+        L{ResolverChain.lookupAllRecords} returns a L{DomainError}
+        failure if its C{resolvers} list is empty.
+        """
+        r = ResolverChain([])
+        d = r.lookupAllRecords("www.example.com")
+        f = self.failureResultOf(d)
+        self.assertIs(f.trap(DomainError), DomainError)