diff --git a/src/runtime/tests/api_component.rs b/src/runtime/tests/api_component.rs
new file mode 100644
index 0000000000000000000000000000000000000000..67271d2986bb610f91a18425edff20de76b0b0f2
--- /dev/null
+++ b/src/runtime/tests/api_component.rs
@@ -0,0 +1,158 @@
+// Testing the api component.
+//
+// These tests explicitly do not use the "NUM_INSTANCES" constant because we're
+// doing some communication with the native component. Hence only expect one
+
+use super::*;
+
+#[test]
+fn test_put_and_get() {
+    const CODE: &'static str = "
+    primitive handler(in<u32> request, out<u32> response, u32 loops) {
+        u32 index = 0;
+        while (index < loops) {
+            sync {
+                auto value = get(request);
+                put(response, value * 2);
+            }
+            index += 1;
+        }
+    }
+    ";
+
+    let pd = ProtocolDescription::parse(CODE.as_bytes()).unwrap();
+    let rt = Runtime::new(NUM_THREADS, pd);
+    let mut api = rt.create_interface();
+
+    let req_chan = api.create_channel().unwrap();
+    let resp_chan = api.create_channel().unwrap();
+
+    api.create_connector("", "handler", ValueGroup::new_stack(vec![
+        Value::Input(PortId::new(req_chan.getter_id.index)),
+        Value::Output(PortId::new(resp_chan.putter_id.index)),
+        Value::UInt32(NUM_LOOPS),
+    ])).unwrap();
+
+    for loop_idx in 0..NUM_LOOPS {
+        api.perform_sync_round(vec![
+            ApplicationSyncAction::Put(req_chan.putter_id, ValueGroup::new_stack(vec![Value::UInt32(loop_idx)])),
+            ApplicationSyncAction::Get(resp_chan.getter_id)
+        ]).expect("start sync round");
+
+        let result = api.wait().expect("finish sync round");
+        assert!(result.len() == 1);
+        if let Value::UInt32(gotten) = result[0].values[0] {
+            assert_eq!(gotten, loop_idx * 2);
+        } else {
+            assert!(false);
+        }
+    }
+}
+
+#[test]
+fn test_getting_from_component() {
+    const CODE: &'static str ="
+    primitive loop_sender(out<u32> numbers, u32 cur, u32 last) {
+        while (cur < last) {
+            sync {
+                put(numbers, cur);
+                cur += 1;
+            }
+        }
+    }";
+
+    let pd = ProtocolDescription::parse(CODE.as_bytes()).unwrap();
+    let rt = Runtime::new(NUM_THREADS, pd);
+    let mut api = rt.create_interface();
+
+    let channel = api.create_channel().unwrap();
+    api.create_connector("", "loop_sender", ValueGroup::new_stack(vec![
+        Value::Output(PortId::new(channel.putter_id.index)),
+        Value::UInt32(1337),
+        Value::UInt32(1337 + NUM_LOOPS)
+    ])).unwrap();
+
+    for loop_idx in 0..NUM_LOOPS {
+        api.perform_sync_round(vec![
+            ApplicationSyncAction::Get(channel.getter_id),
+        ]).expect("start sync round");
+
+        let result = api.wait().expect("finish sync round");
+
+        assert!(result.len() == 1 && result[0].values.len() == 1);
+        if let Value::UInt32(gotten) = result[0].values[0] {
+            assert_eq!(gotten, 1337 + loop_idx);
+        } else {
+            assert!(false);
+        }
+    }
+}
+
+#[test]
+fn test_putting_to_component() {
+    const CODE: &'static str = "
+    primitive loop_receiver(in<u32> numbers, u32 cur, u32 last) {
+        while (cur < last) {
+            sync {
+                auto number = get(numbers);
+                assert(number == cur);
+                cur += 1;
+            }
+        }
+    }
+    ";
+
+    let pd = ProtocolDescription::parse(CODE.as_bytes()).unwrap();
+    let rt = Runtime::new(NUM_THREADS, pd);
+    let mut api = rt.create_interface();
+
+    let channel = api.create_channel().unwrap();
+    api.create_connector("", "loop_receiver", ValueGroup::new_stack(vec![
+        Value::Input(PortId::new(channel.getter_id.index)),
+        Value::UInt32(42),
+        Value::UInt32(42 + NUM_LOOPS)
+    ])).unwrap();
+
+    for loop_idx in 0..NUM_LOOPS {
+        api.perform_sync_round(vec![
+            ApplicationSyncAction::Put(channel.putter_id, ValueGroup::new_stack(vec![Value::UInt32(42 + loop_idx)])),
+        ]).expect("start sync round");
+
+        // Note: if we finish a round, then it must have succeeded :)
+        api.wait().expect("finish sync round");
+    }
+}
+
+#[test]
+fn test_doing_nothing() {
+    const CODE: &'static str = "
+    primitive getter(in<bool> input, u32 num_loops) {
+        u32 index = 0;
+        while (index < num_loops) {
+            sync {}
+            sync { auto res = get(input); assert(res); }
+            index += 1;
+        }
+    }
+    ";
+
+    let pd = ProtocolDescription::parse(CODE.as_bytes()).unwrap();
+    let rt = Runtime::new(NUM_THREADS, pd);
+    let mut api = rt.create_interface();
+
+    let channel = api.create_channel().unwrap();
+    api.create_connector("", "getter", ValueGroup::new_stack(vec![
+        Value::Input(PortId::new(channel.getter_id.index)),
+        Value::UInt32(NUM_LOOPS),
+    ])).unwrap();
+
+    for _ in 0..NUM_LOOPS {
+        api.perform_sync_round(vec![]).expect("start silent sync round");
+        api.wait().expect("finish silent sync round");
+        api.perform_sync_round(vec![
+            ApplicationSyncAction::Put(channel.putter_id, ValueGroup::new_stack(vec![Value::Bool(true)]))
+        ]).expect("start firing sync round");
+        let res = api.wait().expect("finish firing sync round");
+        assert!(res.is_empty());
+    }
+}
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