FullTest.java

@DisplayName("👋 A fairly basic test example")
@ExtendWith(VertxExtension.class)
class SampleVerticleTest {

  @Test
  @DisplayName("⏱ Count 3 timer ticks")
  void countThreeTicks(Vertx vertx, VertxTestContext testContext) {
    AtomicInteger counter = new AtomicInteger();
    vertx.setPeriodic(100, id -> {
      if (counter.incrementAndGet() == 3) {
        testContext.completeNow();
      }
    });
  }

  @Test
  @DisplayName("⏱ Count 3 timer ticks, with a checkpoint")
  void countThreeTicksWithCheckpoints(Vertx vertx, VertxTestContext testContext) {
    Checkpoint checkpoint = testContext.checkpoint(3);
    vertx.setPeriodic(100, id -> checkpoint.flag());
  }

  @Test
  @DisplayName("🚀 Deploy a HTTP service verticle and make 10 requests")
  void useSampleVerticle(Vertx vertx, VertxTestContext testContext) {
    WebClient webClient = WebClient.create(vertx);
    Checkpoint deploymentCheckpoint = testContext.checkpoint();
    Checkpoint requestCheckpoint = testContext.checkpoint(10);

    vertx.deployVerticle(new SampleVerticle(), testContext.succeeding(id -> {
      deploymentCheckpoint.flag();

      for (int i = 0; i < 10; i++) {
        webClient.get(11981, "localhost", "/")
          .as(BodyCodec.string())
          .send(testContext.succeeding(resp -> {
            testContext.verify(() -> {
              assertThat(resp.statusCode()).isEqualTo(200);
              assertThat(resp.body()).contains("Yo!");
              requestCheckpoint.flag();
            });
          }));
      }
    }));
  }

  @DisplayName("➡️ A nested test with customized lifecycle")
  @Nested
  class CustomLifecycleTest {

    Vertx vertx;

    @BeforeEach
    void prepare() {
      vertx = Vertx.vertx(new VertxOptions()
        .setMaxEventLoopExecuteTime(1000)
        .setPreferNativeTransport(true)
        .setFileResolverCachingEnabled(true));
    }

    @Test
    @DisplayName("⬆️ Deploy SampleVerticle")
    void deploySampleVerticle(VertxTestContext testContext) {
      vertx.deployVerticle(new SampleVerticle(), testContext.succeeding(id -> testContext.completeNow()));
    }

    @Test
    @DisplayName("🛂 Make a HTTP client request to SampleVerticle")
    void httpRequest(VertxTestContext testContext) {
      WebClient webClient = WebClient.create(vertx);
      vertx.deployVerticle(new SampleVerticle(), testContext.succeeding(id -> {
        webClient.get(11981, "localhost", "/yo")
          .as(BodyCodec.string())
          .send(testContext.succeeding(resp -> {
            testContext.verify(() -> {
              assertThat(resp.statusCode()).isEqualTo(200);
              assertThat(resp.body()).contains("Yo!");
              testContext.completeNow();
            });
          }));
      }));
    }

    @AfterEach
    void cleanup() {
      vertx.close();
    }
  }
}