diff --git a/lib/RpcManager/NopeRpcManager.spec.ts b/lib/RpcManager/NopeRpcManager.spec.ts
index fb4fefd..a8397db 100644
--- a/lib/RpcManager/NopeRpcManager.spec.ts
+++ b/lib/RpcManager/NopeRpcManager.spec.ts
@@ -17,20 +17,20 @@ describe("NopeRpcManager", function () {
     async () => "test",
     "test"
   );
-  beforeEach(() => {
-    // Create a new Observer
-    manager = new NopeRpcManager(
-      {
-        communicator: getLayer("event", "", false),
-        logger: false,
-      },
-      () => new NopeObservable(),
-      async () => "test",
-      "test"
-    );
-  });
-
   describe("serviceHandeling", function () {
+    beforeEach(() => {
+      // Create a new Observer
+      manager = new NopeRpcManager(
+        {
+          communicator: getLayer("event", "", false),
+          logger: false,
+        },
+        () => new NopeObservable(),
+        async () => "test",
+        "test"
+      );
+    });
+
     const helloWorld = async (greetings: string) => {
       return "Hello " + greetings + "!";
     };
@@ -99,4 +99,113 @@ describe("NopeRpcManager", function () {
       }
     });
   });
+
+  describe("RpcManager Communication", function () {
+    let caller = new NopeRpcManager(
+      {
+        communicator: getLayer("event", "", false),
+        logger: false,
+      },
+      () => new NopeObservable(),
+      async () => "test",
+      "test"
+    );
+
+    beforeEach(() => {
+      const communicator = getLayer("event", "", false);
+
+      // Create a new Observer
+      manager = new NopeRpcManager(
+        {
+          communicator,
+          logger: false,
+        },
+        () => new NopeObservable(),
+        async () => "test",
+        "test"
+      );
+
+      caller = new NopeRpcManager(
+        {
+          communicator,
+          logger: false,
+        },
+        () => new NopeObservable(),
+        async () => "test",
+        "test"
+      );
+    });
+
+    const helloWorld = async (greetings: string) => {
+      return "Hello " + greetings + "!";
+    };
+
+    const delay = async (greetings: string) => {
+      await sleep(1000);
+      return "Hello " + greetings + "!";
+    };
+
+    it("registering service", async () => {
+      await manager.ready.waitFor();
+      await caller.ready.waitFor();
+
+      const r = manager.registerService(helloWorld);
+      await manager.services.onChange.waitForUpdate();
+    });
+
+    it("call service", async () => {
+      await manager.ready.waitFor();
+      await caller.ready.waitFor();
+
+      const r = manager.registerService(helloWorld, {
+        id: "helloworld",
+      });
+
+      await sleep(10);
+
+      const result = await caller.performCall("helloworld", ["Mocha"]);
+      expect(result).to.equal("Hello Mocha!", "result is not matching");
+    });
+
+    it("call service via methodInterface", async () => {
+      await manager.ready.waitFor();
+      await caller.ready.waitFor();
+
+      const r = manager.registerService(helloWorld, {
+        id: "helloworld",
+      });
+
+      await sleep(10);
+
+      const result = await caller.methodInterface.helloworld("Mocha");
+      expect(result).to.equal("Hello Mocha!", "result is not matching");
+    });
+
+    it("call service with a timeout", async () => {
+      await manager.ready.waitFor();
+      await caller.ready.waitFor();
+
+      const r = manager.registerService(delay, {
+        id: "helloworld",
+      });
+
+      await sleep(10);
+
+      const err = Error("Error not thrown");
+
+      try {
+        const result = await caller.methodInterfaceWithOptions.helloworld(
+          {
+            timeout: 50,
+          },
+          "Mocha"
+        );
+        throw err;
+      } catch (e) {
+        if (e == err) {
+          throw err;
+        }
+      }
+    });
+  });
 });