Fixed type inference on DockerComposeContainerExtension

Author: sksamuel

src/main/kotlin/io/kotest/extensions/testcontainers/DockerComposeContainerExtension.kt

@@ -13,6 +13,7 @@ import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.withContext
 import org.testcontainers.containers.DockerComposeContainer
 import org.testcontainers.containers.GenericContainer
+import java.io.File
 
 /**
  * A Kotest [MountableExtension] for [GenericContainer]s that are started the first time they are
@@ -47,7 +48,7 @@ import org.testcontainers.containers.GenericContainer
  * @param afterShutdown a callback that is invoked only once, just after the container is stopped.
  * If the container is never started, this callback will not be invoked.
  */
-class DockerComposeContainerExtension<T : DockerComposeContainer<T>>(
+class DockerComposeContainerExtension<T : DockerComposeContainer<out T>>(
    private val container: T,
    private val mode: ContainerLifecycleMode = ContainerLifecycleMode.Project,
    private val beforeStart: (T) -> Unit = {},
@@ -65,6 +66,17 @@ class DockerComposeContainerExtension<T : DockerComposeContainer<T>>(
    AfterTestListener,
    AfterSpecListener {
 
+   companion object {
+      operator fun invoke(composeFile: File): DockerComposeContainerExtension<DockerComposeContainer<Nothing>> =
+         DockerComposeContainerExtension(DockerComposeContainer<Nothing>(composeFile))
+
+      operator fun invoke(
+         composeFile: File,
+         mode: ContainerLifecycleMode = ContainerLifecycleMode.Project,
+      ): DockerComposeContainerExtension<DockerComposeContainer<Nothing>> =
+         DockerComposeContainerExtension(DockerComposeContainer<Nothing>(composeFile), mode)
+   }
+
    private var started: Boolean = false
 
    /**

src/test/kotlin/io/kotest/extensions/testcontainers/DockerComposeContainerExtensionTest.kt

@@ -0,0 +1,20 @@
+package io.kotest.extensions.testcontainers
+
+import io.kotest.core.extensions.install
+import io.kotest.core.spec.style.StringSpec
+import io.kotest.matchers.optional.shouldBePresent
+import io.kotest.matchers.string.shouldContain
+import org.testcontainers.containers.DockerComposeContainer
+import java.io.File
+
+class DockerComposeContainerExtensionTest : StringSpec() {
+   init {
+
+      val container: DockerComposeContainer<Nothing> =
+         install(DockerComposeContainerExtension(File("src/test/resources/docker-compose/docker-compose.yml")))
+
+      "should setup using docker-compose" {
+         container.getContainerByServiceName("hello_world").shouldBePresent().logs shouldContain "Hello world"
+      }
+   }
+}

src/test/kotlin/io/kotest/extensions/testcontainers/KafkaTestContainerExtensionTest.kt

@@ -11,6 +11,7 @@ import org.testcontainers.containers.KafkaContainer
 import org.testcontainers.utility.DockerImageName
 import java.time.Duration
 
+@Deprecated("To be removed")
 class KafkaTestContainerExtensionTest : FunSpec() {
    init {
 

src/test/kotlin/io/kotest/extensions/testcontainers/StartableTestLifecycleAwareTest.kt

@@ -4,6 +4,7 @@ import io.kotest.core.spec.style.StringSpec
 import io.kotest.matchers.collections.shouldHaveSize
 
 class StartableTestLifecycleAwareTest : StringSpec({
+
    val startableTestLifecycleAwareForPerTest = StartableTestLifecycleAware()
    val startableTestLifecycleAwareForPerSpec = StartableTestLifecycleAware()