move to testkit, and docs

akka-docs/src/test/java/jdocs/persistence/testkit/PersistenceInitTest.java

@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2020 Lightbend Inc. <https://www.lightbend.com>
+ */
+
+package jdocs.persistence.testkit;
+
+import akka.actor.testkit.typed.javadsl.TestKitJunitResource;
+
+import com.typesafe.config.ConfigFactory;
+import jdocs.AbstractJavaTest;
+import org.junit.ClassRule;
+import org.junit.Test;
+
+import java.util.UUID;
+
+//#imports
+import akka.persistence.testkit.javadsl.PersistenceInit;
+import akka.Done;
+
+import java.time.Duration;
+import java.util.concurrent.CompletionStage;
+import java.util.concurrent.TimeUnit;
+
+//#imports
+
+public class PersistenceInitTest extends AbstractJavaTest {
+  @ClassRule
+  public static final TestKitJunitResource testKit =
+    new TestKitJunitResource(
+      ConfigFactory.parseString(
+        "akka.persistence.journal.plugin = \"akka.persistence.journal.inmem\" \n"
+          + "akka.persistence.journal.inmem.test-serialization = on \n" +
+          "akka.persistence.snapshot-store.plugin = \"akka.persistence.snapshot-store.local\" \n"
+          + "akka.persistence.snapshot-store.local.dir = \"target/snapshot-"
+          + UUID.randomUUID().toString()
+          + "\" \n"
+      )
+        .withFallback(ConfigFactory.defaultApplication()));
+
+  @Test
+  public void testInit() throws Exception {
+    //#init
+    Duration timeout = Duration.ofSeconds(5);
+    CompletionStage<Done> done = PersistenceInit.initializeDefaultPlugins(testKit.system(), timeout);
+    done.toCompletableFuture().get(timeout.getSeconds(), TimeUnit.SECONDS);
+    //#init
+  }
+}