diff --git a/src/Web/Users/TestSpec.hs b/src/Web/Users/TestSpec.hs
--- a/src/Web/Users/TestSpec.hs
+++ b/src/Web/Users/TestSpec.hs
@@ -94,6 +94,8 @@
                                     { dd_foo = False
                                     }
                                 })
+                        userIdA' <- getUserIdByName backend "changed"
+                        userIdA' `shouldBe` Just userIdA
               it "deleting users should work" $
                  assertRight (createUser backend userA) $ \userIdA ->
                  assertRight (createUser backend userB) $ \userIdB ->
@@ -123,6 +125,13 @@
                     authUser backend "bar@baz.com" (PasswordPlain "123") 500 `shouldReturn` Nothing
                     authUser backend "bar@baz.com' OR 1 = 1 --" (PasswordPlain "123") 500 `shouldReturn` Nothing
                     authUser backend "bar@baz.com' OR 1 = 1; --" (PasswordPlain  "' OR 1 = 1; --") 500 `shouldReturn` Nothing
+              it "sessionless auth with valid userdata should work" $
+                 assertRight (createUser backend userA) $ \userIdA ->
+                 do withAuthUser backend "bar@baz.com" ((== DummyDetails True 21) . u_more) (return . (== userIdA)) `shouldReturn` Just True
+                    withAuthUser backend "bar@baz.com" ((== DummyDetails True 21) . u_more) (return . (/= userIdA)) `shouldReturn` Just False
+              it "sessionless auth with invalid userdata should fail" $
+                 assertRight (createUser backend userA) $ \userIdA ->
+                    withAuthUser backend "bar@baz.com" ((/= DummyDetails True 21) . u_more) (return . (/= userIdA)) `shouldReturn` Nothing
               it "destroy session should really remove the session" $
                  withAuthedUser $ \(sessionId, _) ->
                      do destroySession backend sessionId
diff --git a/users-test.cabal b/users-test.cabal
--- a/users-test.cabal
+++ b/users-test.cabal
@@ -1,5 +1,5 @@
 name:                users-test
-version:             0.2.0.0
+version:             0.3.0.0
 synopsis:            Library to test backends for the users library
 description:         Provides HSpec helpers for backends of <http://hackage.haskell.org/package/users users package>.
                      .
@@ -26,7 +26,7 @@
                        aeson >=0.8,
                        base >=4.6 && <5,
                        hspec >=2.1,
-                       users >=0.2,
+                       users >=0.3.0.0,
                        text >=1.2
   hs-source-dirs:      src
   default-language:    Haskell2010