使用 Testcontainers + Quarkus + MongoDB 进行集成测试

Question

尝试测试容器进行集成测试。我正在测试 rest api 端点。这里是技术栈——quarkus、RESTEasy 和 mongodb-client

我能够看到 MongoDB 容器已成功启动但出现异常。异常：“com.mongodb.MongoSocketOpenException：异常打开套接字”

2020-04-26 15:13:18,330 INFO  [org.tes.doc.DockerClientProviderStrategy] (main) Loaded org.testcontainers.dockerclient.UnixSocketClientProviderStrategy from ~/.testcontainers.properties, will try it first
2020-04-26 15:13:19,109 INFO  [org.tes.doc.UnixSocketClientProviderStrategy] (main) Accessing docker with local Unix socket
2020-04-26 15:13:19,109 INFO  [org.tes.doc.DockerClientProviderStrategy] (main) Found Docker environment with local Unix socket (unix:///var/run/docker.sock)
2020-04-26 15:13:19,258 INFO  [org.tes.DockerClientFactory] (main) Docker host IP address is localhost
2020-04-26 15:13:19,305 INFO  [org.tes.DockerClientFactory] (main) Connected to docker: 
  Server Version: 19.03.8
  API Version: 1.40
  Operating System: Docker Desktop
  Total Memory: 3940 MB
2020-04-26 15:13:19,524 INFO  [org.tes.uti.RegistryAuthLocator] (main) Credential helper/store (docker-credential-desktop) does not have credentials for quay.io
2020-04-26 15:13:20,106 INFO  [org.tes.DockerClientFactory] (main) Ryuk started - will monitor and terminate Testcontainers containers on JVM exit
2020-04-26 15:13:20,107 INFO  [org.tes.DockerClientFactory] (main) Checking the system...
2020-04-26 15:13:20,107 INFO  [org.tes.DockerClientFactory] (main) ?? Docker server version should be at least 1.6.0
2020-04-26 15:13:20,230 INFO  [org.tes.DockerClientFactory] (main) ?? Docker environment should have more than 2GB free disk space
2020-04-26 15:13:20,291 INFO  [ .2]] (main) Creating container for image: mongo:4.2
2020-04-26 15:13:20,420 INFO  [ .2]] (main) Starting container with ID: d8d142bcdef8e2ebe9c09f171845deffcda503d47aa4893cd44e72d7067f0cdd
2020-04-26 15:13:20,756 INFO  [ .2]] (main) Container mongo:4.2 is starting: d8d142bcdef8e2ebe9c09f171845deffcda503d47aa4893cd44e72d7067f0cdd
2020-04-26 15:13:22,035 INFO  [ .2]] (main) Container mongo:4.2 started in PT3.721S
2020-04-26 15:13:24,390 INFO  [org.mon.dri.cluster] (main) Cluster created with settings {hosts=[127.0.0.1:27017], mode=SINGLE, requiredClusterType=UNKNOWN, serverSelectionTimeout='30000 ms', maxWaitQueueSize=500}
2020-04-26 15:13:24,453 INFO  [org.mon.dri.cluster] (main) Cluster created with settings {hosts=[127.0.0.1:27017], mode=SINGLE, requiredClusterType=UNKNOWN, serverSelectionTimeout='30000 ms', maxWaitQueueSize=500}
2020-04-26 15:13:24,453 INFO  [org.mon.dri.cluster] (cluster-ClusterId{value='5ea5dd542fb66c613dc74629', description='null'}-127.0.0.1:27017) Exception in monitor thread while connecting to server 127.0.0.1:27017: com.mongodb.MongoSocketOpenException: Exception opening socket
    at com.mongodb.internal.connection.SocketChannelStream.open(SocketChannelStream.java:63)
    at com.mongodb.internal.connection.InternalStreamConnection.open(InternalStreamConnection.java:126)
    at com.mongodb.internal.connection.DefaultServerMonitor$ServerMonitorRunnable.run(DefaultServerMonitor.java:117)
    at java.lang.Thread.run(Thread.java:748)
Caused by: java.net.ConnectException: Connection refused
    at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
    at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:714)
    at sun.nio.ch.SocketAdaptor.connect(SocketAdaptor.java:122)
    at com.mongodb.internal.connection.SocketStreamHelper.initialize(SocketStreamHelper.java:64)
    at com.mongodb.internal.connection.SocketChannelStream.initializeSocketChannel(SocketChannelStream.java:72)
    at com.mongodb.internal.connection.SocketChannelStream.open(SocketChannelStream.java:60)
    ... 3 more

如果我使用 docker run 那么我的测试用例可以正常工作。

docker run -p 27017:27017 --name mongodb mongo:4.2

使用上面提到的 testcontainer @ https://www.testcontainers.org/quickstart/junit_5_quickstart/

@Container
    static GenericContainer mongodb = new GenericContainer<>("mongo:4.2").withExposedPorts(27017);

Answer 1

在没有看到您的测试配置的情况下，我不能肯定地说，但我猜测它适用于docker runTestcontainers，而不适用于 Testcontainers，因为docker run暴露了固定端口（始终为 27017），但 Testcontainers 会将端口暴露27017 为随机端口（以避免测试时的端口冲突）机）。

要将 Testcontainers 与 Quarkus 测试一起使用，您的测试必须遵循以下流程：

1. 启动容器。这是必要的，因为 MongoDB 的随机公开端口只有在容器启动后才能知道。

2. 容器启动后从 Testcontainers 获取随机端口，然后设置依赖于容器端口的任何测试配置属性。例如：

   static GenericContainer mongodb = new GenericContainer<>("mongo:4.2").withExposedPorts(27017);
   static {
     mongodb.start();
     System.setProperty("quarkus.mongodb.connection-string",
                        "mongodb://" + mongodb.getContainerIpAddress() + ":" + mongodb.getFirstMappedPort());
   }
   

3. 让夸库斯开始吧。由于Quarkus不支持动态配置，因此您必须在Quarkus启动之前设置MongoDB端口。