为micronaut for mongodb设置测试容器

Question

我正在尝试Testcontainers，Micronaut和Kotlin，不知何故Micronaut不想替换我正在启动的MongoDB的动态端口，到目前为止它还在工作。

我还没有替换(/src/ application-test.yml /resources)下的测试资源

micronaut:
  application:
    name: abc
mongodb:
  connection-pool:
    max-size: 20
  uri: mongodb://${MONGO_HOST:localhost}:${MONGO_PORT}

下面是我的设置代码：

// class .....
companion object {
        private lateinit var embeddedServer: EmbeddedServer
        lateinit var mongoContainer: MongoContainer

        @BeforeAll
        @JvmStatic
        internal fun beforeAll() {
            mongoContainer = MongoContainer()
            mongoContainer.start()
            assertThatPortIsAvailable(mongoContainer)

            System.setProperty("MONGO_HOST", mongoContainer.containerIpAddress)
            System.setProperty("MONGO_PORT", mongoContainer.getPort().toString())

            println(System.getProperties()) // THE ENV VAR IS AVAILABLE HERE
            println("aaaaaaaa" + mongoContainer.getPort())

            embeddedServer = ApplicationContext.run(EmbeddedServer::class.java, PropertySource.of(
                    "test", mapOf(
                    "mongo.uri" to mongoContainer.containerIpAddress,
                    "mongo.port" to mongoContainer.getPort())
            ))
        }

错误消息:消息:无法解析占位符${MONGO_PORT}

Answer 1

这对我在Kotlin中用micronauts运行Testcontainers很有帮助。

import a.b.c.model.NewOffer
import a.b.c.model.QuantityType
import io.micronaut.test.extensions.junit5.annotation.MicronautTest
import io.micronaut.test.support.TestPropertyProvider
import org.assertj.core.api.Assertions.assertThat
import org.junit.jupiter.api.Test
import org.junit.jupiter.api.TestInstance
import org.testcontainers.containers.MongoDBContainer
import org.testcontainers.junit.jupiter.Testcontainers
import javax.inject.Inject

@Testcontainers
@MicronautTest()
@TestInstance(TestInstance.Lifecycle.PER_CLASS)
internal class OfferRepositoryTest() : TestPropertyProvider {

    @Inject
    private lateinit var offerRepository: OfferRepository

    private val mongoDBContainer: MongoDBContainer = MongoDBContainer("mongo:4").apply { start() }

    @Test
    internal fun getEmptyOffers() {
        val find = offerRepository.find()
        assertThat(find).isEmpty()
    }

    override fun getProperties(): MutableMap<String, String> {
        return mutableMapOf(
                "MONGO_HOST" to mongoDBContainer.containerIpAddress,
                "MONGO_PORT" to "${mongoDBContainer.getMappedPort(27017)}"
        )
    }
}

并且src/main/resources/application.yml看起来像是由micronaut生成的

mongodb:
  connection-pool:
    max-size: 20
  uri: mongodb://${MONGO_HOST:localhost}:${MONGO_PORT:27017}

Answer 2

您最好通过实现TestPropertyProvider来提供完整的mongodb.uri。

并且我认为您希望使用mongoContainer.getMappedPort(27017)获得实际的端口。