test the invite room check and the no-homeserver sweep, drop the last space wording

hive-c0re/src/matrix.rs

@@ -460,4 +460,27 @@ mod tests {
             assert!(!message.contains("free-form-marker"), "{message}");
         }
     }
+
+    /// A room that is neither an id nor an alias is refused before any
+    /// request is made; with no default Space left, there is nothing to fall
+    /// back to.
+    #[tokio::test]
+    async fn invite_user_refuses_a_room_that_is_neither_an_id_nor_an_alias() {
+        let client = swarm_matrix_client::client().expect("client");
+        let err = invite_user(&client, "tok", "mara", "general", "example.org")
+            .await
+            .expect_err("a bare name is not a room");
+        assert!(
+            format!("{err:#}").contains("neither a room id nor an alias"),
+            "{err:#}"
+        );
+    }
+
+    /// The sweep touches nothing, and reports success, on a hive with no
+    /// homeserver configured (the test environment has none).
+    #[tokio::test]
+    async fn the_sweep_is_a_successful_no_op_without_a_homeserver() {
+        assert!(!is_present());
+        assert!(ensure_all().await);
+    }
 }