SampleVerticleTest.java

/*
 * Copyright (c) 2018 Red Hat, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package hello;

import io.vertx.core.Vertx;
import io.vertx.core.VertxOptions;
import io.vertx.core.file.FileSystemOptions;
import io.vertx.ext.web.client.WebClient;
import io.vertx.ext.web.codec.BodyCodec;
import io.vertx.junit5.Checkpoint;
import io.vertx.junit5.VertxExtension;
import io.vertx.junit5.VertxTestContext;
import org.junit.jupiter.api.*;
import org.junit.jupiter.api.extension.ExtendWith;

import java.util.concurrent.atomic.AtomicInteger;

import static org.assertj.core.api.Assertions.assertThat;

/**
 * @author <a href="https://julien.ponge.org/">Julien Ponge</a>
 */
@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()).onComplete(testContext.succeeding(id -> {
      deploymentCheckpoint.flag();

      for (int i = 0; i < 10; i++) {
        webClient.get(11981, "localhost", "/")
          .as(BodyCodec.string())
          .send()
          .onComplete(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)
        .setFileSystemOptions(new FileSystemOptions().setFileCachingEnabled(true)));
    }

    @Test
    @DisplayName("⬆️ Deploy SampleVerticle")
    void deploySampleVerticle(VertxTestContext testContext) {
      vertx.deployVerticle(new SampleVerticle())
        .onComplete(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()).onComplete(testContext.succeeding(id -> {
        webClient.get(11981, "localhost", "/yo")
          .as(BodyCodec.string())
          .send()
          .onComplete(testContext.succeeding(resp -> {
            testContext.verify(() -> {
              assertThat(resp.statusCode()).isEqualTo(200);
              assertThat(resp.body()).contains("Yo!");
              testContext.completeNow();
            });
          }));
      }));
    }

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