tree: ensure that node is marked active after un-fullscreening

src/it/tests/t0010_fullscreen_focus.rs

@@ -0,0 +1,42 @@
+use {
+    crate::{
+        it::{test_error::TestError, testrun::TestRun},
+        tree::ToplevelNode,
+    },
+    std::rc::Rc,
+};
+
+testcase!();
+
+/// Test that container focus is set after un-fullscreening
+async fn test(run: Rc<TestRun>) -> Result<(), TestError> {
+    let ds = run.create_default_setup().await?;
+    ds.mouse.rel(1.0, 1.0);
+
+    let client = run.create_client().await?;
+
+    let window = client.create_window().await?;
+    window.map().await?;
+
+    tassert!(!window.tl.server.tl_data().is_fullscreen.get());
+
+    run.cfg.set_fullscreen(ds.seat.id(), true)?;
+
+    tassert!(window.tl.server.tl_data().is_fullscreen.get());
+
+    run.cfg.set_fullscreen(ds.seat.id(), false)?;
+
+    tassert!(!window.tl.server.tl_data().is_fullscreen.get());
+
+    let container = match window.tl.server.tl_data().parent.get() {
+        Some(p) => match p.node_into_container() {
+            Some(p) => p,
+            _ => bail!("Containing node is not a container"),
+        },
+        _ => bail!("Toplevel doesn't have a parent"),
+    };
+
+    tassert!(container.children.iter().next().unwrap().active.get());
+
+    Ok(())
+}