+doc,htp example snippet for akka http java dsl: CookieDirectives (#20585)(#20466)

akka-docs/rst/java/code/docs/http/javadsl/server/directives/CookieDirectivesExamplesTest.java

@@ -0,0 +1,102 @@
+/*
+ * Copyright (C) 2016-2016 Lightbend Inc. <http://www.lightbend.com>
+ */
+package docs.http.javadsl.server.directives;
+
+import akka.http.javadsl.model.HttpHeader;
+import akka.http.javadsl.model.HttpRequest;
+import akka.http.javadsl.model.headers.Cookie;
+import akka.http.javadsl.model.headers.HttpCookie;
+import akka.http.javadsl.model.headers.SetCookie;
+import akka.http.javadsl.server.Rejections;
+import akka.http.javadsl.server.Route;
+import akka.http.javadsl.testkit.JUnitRouteTest;
+import akka.http.scaladsl.model.DateTime;
+import org.junit.Test;
+
+import java.util.Optional;
+import java.util.OptionalLong;
+
+public class CookieDirectivesExamplesTest extends JUnitRouteTest {
+
+  @Test
+  public void testCookie() {
+    //#cookie
+    final Route route = cookie("userName", nameCookie ->
+      complete("The logged in user is '" + nameCookie.value() + "'")
+    );
+
+    // tests:
+    testRoute(route).run(HttpRequest.GET("/").addHeader(Cookie.create("userName", "paul")))
+      .assertEntity("The logged in user is 'paul'");
+    // missing cookie
+    runRouteUnSealed(route, HttpRequest.GET("/"))
+      .assertRejections(Rejections.missingCookie("userName"));
+    testRoute(route).run(HttpRequest.GET("/"))
+      .assertEntity("Request is missing required cookie 'userName'");
+    //#cookie
+  }
+
+  @Test
+  public void testOptionalCookie() {
+    //#optionalCookie
+    final Route route = optionalCookie("userName", optNameCookie -> {
+      if (optNameCookie.isPresent()) {
+        return complete("The logged in user is '" + optNameCookie.get().value() + "'");
+      } else {
+        return complete("No user logged in");
+      }
+    }
+    );
+
+    // tests:
+    testRoute(route).run(HttpRequest.GET("/").addHeader(Cookie.create("userName", "paul")))
+      .assertEntity("The logged in user is 'paul'");
+    testRoute(route).run(HttpRequest.GET("/"))
+      .assertEntity("No user logged in");
+    //#optionalCookie
+  }
+
+  @Test
+  public void testDeleteCookie() {
+    //#deleteCookie
+    final Route route = deleteCookie("userName", () ->
+      complete("The user was logged out")
+    );
+
+    // tests:
+    final HttpHeader expected = SetCookie.create(
+      HttpCookie.create(
+        "userName",
+        "deleted",
+        Optional.of(DateTime.MinValue()),
+        OptionalLong.empty(),
+        Optional.empty(),
+        Optional.empty(),
+        false,
+        false,
+        Optional.empty()));
+
+    testRoute(route).run(HttpRequest.GET("/"))
+      .assertEntity("The user was logged out")
+      .assertHeaderExists(expected);
+    //#deleteCookie
+  }
+
+  @Test
+  public void testSetCookie() {
+    //#setCookie
+    final Route route = setCookie(HttpCookie.create("userName", "paul"), () ->
+      complete("The user was logged in")
+    );
+
+    // tests:
+    final HttpHeader expected = SetCookie.create(HttpCookie.create("userName", "paul"));
+
+    testRoute(route).run(HttpRequest.GET("/"))
+      .assertEntity("The user was logged in")
+      .assertHeaderExists(expected);
+    //#setCookie
+  }
+
+}