diff --git a/src/runtime2/tests/mod.rs b/src/runtime2/tests/mod.rs
index e1e36e0ebfa199dc82afa8adafc2ba6afe54037c..49a2f41a5183022d5f967d62d9efa27006c6e2e1 100644
--- a/src/runtime2/tests/mod.rs
+++ b/src/runtime2/tests/mod.rs
@@ -8,15 +8,44 @@ fn test_component_creation() {
     let pd = ProtocolDescription::parse(b"
     primitive nothing_at_all() {
         s32 a = 5;
-        print(\"hello\");
         auto b = 5 + a;
     }
     ").expect("compilation");
     let rt = Runtime::new(1, pd);
 
-    let prompt = rt.inner.protocol.new_component(b"", b"nothing_at_all", ValueGroup::new_stack(Vec::new()))
-        .expect("component creation");
-    let comp = CompPDL::new(prompt, 0);
-    let (key, _) = rt.inner.create_pdl_component(comp, true);
+    for i in 0..20 {
+        let prompt = rt.inner.protocol.new_component(b"", b"nothing_at_all", ValueGroup::new_stack(Vec::new()))
+            .expect("component creation");
+        let comp = CompPDL::new(prompt, 0);
+        let (key, _) = rt.inner.create_pdl_component(comp, true);
+        rt.inner.enqueue_work(key);
+    }
+}
+
+#[test]
+fn test_component_communication() {
+    let pd = ProtocolDescription::parse(b"
+    primitive sender(out<u32> o) {
+        print(\"sender\");
+        sync put(o, 1);
+    }
+    primitive receiver(in<u32> i) {
+        print(\"receiver\");
+        sync get(i);
+    }
+    composite constructor() {
+        channel o -> i;
+        print(\"creating sender\");
+        new sender(o);
+        print(\"creating receiver\");
+        new receiver(i);
+        print(\"done\");
+    }
+    ").expect("compilation");
+    let rt = Runtime::new(1, pd);
+
+    let prompt = rt.inner.protocol.new_component(b"", b"constructor", ValueGroup::new_stack(Vec::new()))
+        .expect("creation");
+    let (key, _) = rt.inner.create_pdl_component(CompPDL::new(prompt, 0), true);
     rt.inner.enqueue_work(key);
 }
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