rename akka-docs dir to docs (#62)

docs/src/test/java/jdocs/stream/javadsl/cookbook/RecipeDecompress.java

@@ -0,0 +1,56 @@
+/*
+ * Copyright (C) 2016-2022 Lightbend Inc. <https://www.lightbend.com>
+ */
+
+package jdocs.stream.javadsl.cookbook;
+
+import org.apache.pekko.NotUsed;
+import org.apache.pekko.actor.ActorSystem;
+import org.apache.pekko.stream.javadsl.Compression;
+import org.apache.pekko.stream.javadsl.Source;
+import org.apache.pekko.testkit.javadsl.TestKit;
+import org.apache.pekko.util.ByteString;
+import static org.apache.pekko.util.ByteString.emptyByteString;
+import org.junit.AfterClass;
+import org.junit.Assert;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+import java.util.concurrent.TimeUnit;
+
+public class RecipeDecompress extends RecipeTest {
+
+  static ActorSystem system;
+
+  @BeforeClass
+  public static void setup() {
+    system = ActorSystem.create("RecipeDecompress");
+  }
+
+  @AfterClass
+  public static void tearDown() {
+    TestKit.shutdownActorSystem(system);
+    system = null;
+  }
+
+  @Test
+  public void parseLines() throws Exception {
+    final Source<ByteString, NotUsed> dataStream =
+        Source.single(ByteString.fromString("Hello World"));
+
+    final Source<ByteString, NotUsed> compressedStream = dataStream.via(Compression.gzip());
+
+    // #decompress-gzip
+    final Source<ByteString, NotUsed> decompressedStream =
+        compressedStream.via(Compression.gunzip(100));
+    // #decompress-gzip
+
+    ByteString decompressedData =
+        decompressedStream
+            .runFold(emptyByteString(), ByteString::concat, system)
+            .toCompletableFuture()
+            .get(1, TimeUnit.SECONDS);
+    String decompressedString = decompressedData.utf8String();
+    Assert.assertEquals("Hello World", decompressedString);
+  }
+}