config: tell the config about drm devices

src/it/test_backend.rs

@@ -3,8 +3,9 @@ use {
         async_engine::SpawnedFuture,
         backend::{
             AxisSource, Backend, BackendEvent, Connector, ConnectorEvent, ConnectorId,
-            ConnectorKernelId, InputDevice, InputDeviceAccelProfile, InputDeviceCapability,
-            InputDeviceId, InputEvent, KeyState, Mode, MonitorInfo, ScrollAxis, TransformMatrix,
+            ConnectorKernelId, DrmDeviceId, InputDevice, InputDeviceAccelProfile,
+            InputDeviceCapability, InputDeviceId, InputEvent, KeyState, Mode, MonitorInfo,
+            ScrollAxis, TransformMatrix,
         },
         compositor::TestFuture,
         fixed::Fixed,
@@ -241,6 +242,10 @@ impl Connector for TestConnector {
     fn damage(&self) {
         // nothing
     }
+
+    fn drm_dev(&self) -> Option<DrmDeviceId> {
+        None
+    }
 }
 
 pub struct TestMouseClick {

src/it/test_config.rs

@@ -102,6 +102,8 @@ unsafe extern "C" fn handle_msg(data: *const u8, msg: *const u8, size: usize) {
         ServerMessage::TimerExpired { .. } => {}
         ServerMessage::GraphicsInitialized => tc.graphics_initialized.set(true),
         ServerMessage::Clear => tc.clear(),
+        ServerMessage::NewDrmDev { .. } => {}
+        ServerMessage::DelDrmDev { .. } => {}
     }
 }