2 files changed, 73 insertions, 0 deletions
diff --git a/src/test/java/pl/edu/mimuw/cloudatlas/agent/MockExecutor.java b/src/test/java/pl/edu/mimuw/cloudatlas/agent/MockExecutor.java
new file mode 100644
index 0000000..1da50ad
--- /dev/null
+++ b/src/test/java/pl/edu/mimuw/cloudatlas/agent/MockExecutor.java
@@ -0,0 +1,24 @@
+package pl.edu.mimuw.cloudatlas.agent;
+
+import java.util.concurrent.LinkedBlockingQueue;
+
+import pl.edu.mimuw.cloudatlas.agent.modules.Module;
+import pl.edu.mimuw.cloudatlas.agent.messages.AgentMessage;
+
+/*
+ * Instead of passing messages to an EventBus, this one just collects them
+ * locally for inspection in unit tests.
+ */
+public class MockExecutor extends Executor {
+    public LinkedBlockingQueue<AgentMessage> messagesToPass;
+
+    public MockExecutor(Module module) {
+        super(module);
+        messagesToPass = new LinkedBlockingQueue<AgentMessage>();
+    }
+
+    @Override
+    public void passMessage(AgentMessage message) throws InterruptedException {
+        messagesToPass.put(message);
+    }
+}
diff --git a/src/test/java/pl/edu/mimuw/cloudatlas/agent/modules/StanikTest.java b/src/test/java/pl/edu/mimuw/cloudatlas/agent/modules/StanikTest.java
new file mode 100644
index 0000000..7c869e7
--- /dev/null
+++ b/src/test/java/pl/edu/mimuw/cloudatlas/agent/modules/StanikTest.java
@@ -0,0 +1,49 @@
+package pl.edu.mimuw.cloudatlas.agent.modules;
+
+import java.util.List;
+import java.util.Map.Entry;
+
+import pl.edu.mimuw.cloudatlas.agent.messages.AgentMessage;
+import pl.edu.mimuw.cloudatlas.agent.messages.GetHierarchyMessage;
+import pl.edu.mimuw.cloudatlas.agent.messages.HierarchyMessage;
+import pl.edu.mimuw.cloudatlas.agent.messages.ResponseMessage;
+import pl.edu.mimuw.cloudatlas.agent.MockExecutor;
+import pl.edu.mimuw.cloudatlas.model.Attribute;
+import pl.edu.mimuw.cloudatlas.model.Value;
+import pl.edu.mimuw.cloudatlas.model.ZMI;
+
+import org.junit.Before;
+import org.junit.Test;
+import static org.junit.Assert.*;
+
+public class StanikTest {
+    private Stanik stanik;
+    private MockExecutor executor;
+
+    @Before
+    public void setupEventBus() {
+        stanik = new Stanik();
+        executor = new MockExecutor(stanik);
+    }
+
+    @Test
+    public void getEmptyHierarchy() throws Exception {
+        GetHierarchyMessage message = new GetHierarchyMessage("test_msg", 0, ModuleType.TEST, 42);
+        stanik.handleTyped(message);
+        assertEquals(1, executor.messagesToPass.size());
+        ResponseMessage receivedMessage = (ResponseMessage) executor.messagesToPass.take();
+        assertEquals(ModuleType.TEST, receivedMessage.getDestinationModule());
+        assertEquals(ResponseMessage.Type.HIERARCHY, receivedMessage.getType());
+        assertEquals(42, receivedMessage.getRequestId());
+        HierarchyMessage hierarchyMessage = (HierarchyMessage) receivedMessage;
+        ZMI zmi = hierarchyMessage.getZMI();
+        assertNull(zmi.getFather());
+        assertTrue(zmi.getSons().isEmpty());
+        boolean empty = true;
+        for (Entry<Attribute, Value> entry : zmi.getAttributes()) {
+            empty = false;
+            break;
+        }
+        assertTrue(empty);
+    }
+}