create CommandStream and first Command

src/test/kotlin/eventDemo/app/actions/CardTest.kt

@@ -4,6 +4,7 @@ import eventDemo.app.Card
 import eventDemo.app.EventStream
 import eventDemo.app.GameId
 import eventDemo.app.PlayCardEvent
+import eventDemo.app.read
 import eventDemo.module
 import io.kotest.core.spec.style.FunSpec
 import io.ktor.client.call.body
@@ -11,11 +12,13 @@ import io.ktor.client.request.accept
 import io.ktor.client.request.get
 import io.ktor.client.request.post
 import io.ktor.client.request.setBody
+import io.ktor.client.statement.bodyAsText
 import io.ktor.http.ContentType.Application.Json
 import io.ktor.http.HttpStatusCode
 import io.ktor.http.contentType
 import io.ktor.server.testing.testApplication
 import org.koin.core.context.stopKoin
+import org.koin.java.KoinJavaComponent.getKoin
 import org.koin.ktor.ext.inject
 import kotlin.test.assertEquals
 
@@ -27,13 +30,17 @@ class CardTest : FunSpec({
                 stopKoin()
                 module()
             }
-            val id = GameId().toString()
+            val id = GameId()
+            val card: Card = Card.Simple(1, Card.Color.Blue)
             client.post("/game/$id/card") {
                 contentType(Json)
                 accept(Json)
-                setBody(Card.Simple(1, Card.Color.Blue))
+                setBody(card)
             }.apply {
-                assertEquals(status, HttpStatusCode.OK)
+                assertEquals(HttpStatusCode.OK, status, message = bodyAsText())
+
+                val eventStream = getKoin().get<EventStream<GameId>>()
+                assertEquals(PlayCardEvent(id, card), eventStream.read<PlayCardEvent, GameId>(id))
             }
         }
     }
@@ -42,7 +49,7 @@ class CardTest : FunSpec({
         testApplication {
             val client = httpClient()
             val id = GameId()
-            val card = Card.Simple(1, Card.Color.Blue)
+            val card: Card = Card.Simple(1, Card.Color.Blue)
             application {
                 stopKoin()
                 module()
@@ -54,7 +61,7 @@ class CardTest : FunSpec({
             }
 
             client.get("/game/$id/card/last").apply {
-                assertEquals(HttpStatusCode.OK, status)
+                assertEquals(HttpStatusCode.OK, status, message = bodyAsText())
                 assertEquals(card, this.call.body<Card>())
             }
         }

src/test/kotlin/eventDemo/app/actions/CommandTest.kt

@@ -0,0 +1,68 @@
+package eventDemo.app.actions
+
+import eventDemo.app.Card
+import eventDemo.app.Command
+import eventDemo.app.CommandStream
+import eventDemo.app.Game
+import eventDemo.app.PlayCardCommand
+import eventDemo.module
+import io.kotest.core.spec.style.FunSpec
+import io.ktor.client.call.body
+import io.ktor.client.request.accept
+import io.ktor.client.request.get
+import io.ktor.client.request.post
+import io.ktor.client.request.setBody
+import io.ktor.client.statement.bodyAsText
+import io.ktor.http.ContentType.Application.Json
+import io.ktor.http.HttpStatusCode
+import io.ktor.http.contentType
+import io.ktor.server.testing.testApplication
+import org.koin.core.context.stopKoin
+import org.koin.java.KoinJavaComponent.getKoin
+import org.koin.ktor.ext.inject
+import kotlin.test.assertEquals
+
+class CommandTest : FunSpec({
+    test("/command/send") {
+        testApplication {
+            val client = httpClient()
+            application {
+                stopKoin()
+                module()
+            }
+            val command = PlayCardCommand(Game.new(), Card.Simple(1, Card.Color.Blue))
+            client.post("/command/send") {
+                contentType(Json)
+                accept(Json)
+                setBody(command)
+            }.apply {
+                assertEquals(HttpStatusCode.OK, status, message = bodyAsText())
+
+                val commandStream = getKoin().get<CommandStream>()
+                assertEquals(command, commandStream.readNext())
+            }
+        }
+    }
+
+    test("/command/next") {
+        testApplication {
+            val command =
+                PlayCardCommand(
+                    Game.new(),
+                    Card.Simple(1, Card.Color.Blue),
+                )
+            application {
+                stopKoin()
+                module()
+
+                val commandStream by inject<CommandStream>()
+                commandStream.sendRequest(command)
+            }
+
+            httpClient().get("/command/next").apply {
+                assertEquals(HttpStatusCode.OK, status, message = bodyAsText())
+                assertEquals(command, this.call.body<Command>())
+            }
+        }
+    }
+})