feat(display): input routed via display server to focused app; input Subscribe; uses caps badged + Delegate

crates/servers/input-server/src/tests/server.rs

@@ -1,7 +1,7 @@
 use crate::adapters::mock::MockInputDevice;
 use crate::protocol::*;
 use crate::server::InputServer;
-use server_framework::Server;
+use server_framework::{Decode, Encode, Server};
 
 fn test_server() -> InputServer<MockInputDevice> {
     InputServer::new(MockInputDevice::new())
@@ -85,3 +85,14 @@ fn a_full_buffer_drops_the_oldest_event() {
         InputResponse::Event(InputEvent::KeyDown(Key::Char(8)))
     );
 }
+
+#[test]
+fn a_subscription_is_kept_and_other_requests_still_work() {
+    let mut server = test_server();
+    let note = types::bounded::CapSlot::new(7);
+    let (reply, _) = server.handle_call(0, [types::input::SUBSCRIBE, 0, 0, 0], note);
+    assert_eq!(reply, [0; 4]);
+    assert_eq!(server.subscriber(), note);
+    let (reply, _) = server.handle_call(0, InputRequest::PollEvent.encode(), None);
+    assert_eq!(InputResponse::decode(reply), Some(InputResponse::NoEvent));
+}