test(core): PairTransport helper

tines-core/tests/pair.rs

@@ -0,0 +1,16 @@
+mod common;
+use common::PairTransport;
+
+use tines_core::transport::{Event, FrameBuf, Transport};
+
+#[test]
+fn pair_transport_connect_then_frame() {
+    let (mut a, mut b) = PairTransport::pair(1500);
+    a.connect();
+    assert_eq!(a.poll(), Some(Event::Contact(1)));
+    a.send(&1, b"hi").unwrap();
+    assert_eq!(
+        b.poll(),
+        Some(Event::Frame(0, FrameBuf::from_slice(b"hi").unwrap()))
+    );
+}