config: add TestConfig

src/it/tests/t0004_quit.rs

@@ -0,0 +1,15 @@
+use {
+    crate::it::{test_error::TestError, testrun::TestRun},
+    std::{future::pending, rc::Rc},
+};
+
+testcase!();
+
+/// Quit
+async fn test(run: Rc<TestRun>) -> Result<(), TestError> {
+    for _ in 0..2 {
+        run.state.eng.yield_now().await;
+    }
+    run.cfg.quit()?;
+    pending().await
+}