Vert.x fake/embedded mongo

Question

I have a service in which I need to implement functional tests(Cucumber) which makes some rest call.

Now earlier in my previous spring projects I had used fongo but I guess its not working with Vert.x

Now for my cucumber tests, how do I implement the fake mongo/embedded mongo or is their a another library all together. I also tried vertx-embedded-mongo-db but there it lacks good documentation.

Answer 1

I had a similar requirement and I achieved it by using vertx-embedded-mongodb

What I did is started vertx-embedded-mongodb vertical and then I started my verticle which listens to mongo port 27018.

DeploymentOptions embeddedMongoOptions = new DeploymentOptions()
  .setWorker(true)
  .setConfig(new JsonObject().put("port", 27018).put("version", "3.4.3"));

vertx.rxDeployVerticle(EmbeddedMongoVerticle.class.getName(), embeddedMongoOptions)
.map(id -> {
    return new DeploymentOptions()
            .setWorker(true)
            .setConfig(myApplicationCongig);
})
.flatMap(options -> vertx.rxDeployVerticle(MyApp.class.getName(), options))
.subscribe();

Just make sure that your applications mongo is configured to listen 27018 instead of 27017 for test env.

Also above solution is only for Vert.x 3.x.x. vertx-embedded-mongodb is no longer supported for 4.x.x.