Other: Added basic services test case

tests/service.js

@@ -0,0 +1,52 @@
+var tape = require("tape");
+
+var protobuf = require("..");
+
+tape.test("services", function(test) {
+
+    protobuf.load("tests/data/service.proto", function(err, root) {
+        if (err)
+            return test.fail(err.message);
+
+        var myservice = root.lookup("myservice").resolveAll(),
+            MyService = myservice.MyService,
+            DoSomethingRequest = myservice.DoSomethingRequest,
+            DoSomethingResponse = myservice.DoSomethingResponse,
+            DoSomething = MyService.get("DoSomething");
+
+        function rpcImpl(method, requestData, callback) {
+            if (requestData) {
+                test.equal(method, DoSomething, "rpcImpl should reference the correct method");
+                test.ok(callback, "rpcImpl should provide a callback");
+                setTimeout(function() {
+                    callback(null, DoSomethingResponse.create());
+                });
+            } else {
+                test.equal(method, null, "rpcImpl should not reference a method when closed");
+                test.equal(callback, null, "rpcImpl should not provide a callback when closed");
+            }
+        }
+
+        var service = MyService.create(rpcImpl);
+        var dataEmitted = false;
+        service.on("data", function(responseData) {
+            dataEmitted = true;
+            test.ok(responseData, "should emit the data event");
+        });
+        var endCalled = false;
+        service.on("end", function() {
+            test.notOk(endCalled, "should not emit the end event twice");
+            endCalled = true;
+            test.pass("should call the end event");
+            service.end();
+            test.end();
+        });
+        service.doSomething(DoSomethingRequest.create(), function(err, res) {
+            test.notOk(err, "should not raise an error");
+            test.ok(res instanceof DoSomethingResponse.getCtor(), "should return a properly typed response");
+            test.ok(dataEmitted, "should have emitted the data event");
+            service.end();
+        });
+    });
+
+});