Add AsyncHttp4sServlet test suite

servlet/src/test/scala/org/http4s/servlet/AsyncHttp4sServletSuite.scala

@@ -0,0 +1,107 @@
+/*
+ * Copyright 2013 http4s.org
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.http4s
+package servlet
+
+import cats.syntax.all._
+import cats.effect.{IO, Resource, Timer}
+import java.net.{HttpURLConnection, URL}
+import java.nio.charset.StandardCharsets
+import org.eclipse.jetty.server.HttpConfiguration
+import org.eclipse.jetty.server.HttpConnectionFactory
+import org.eclipse.jetty.server.{Server => EclipseServer}
+import org.eclipse.jetty.server.ServerConnector
+import org.eclipse.jetty.servlet.{ServletContextHandler, ServletHolder}
+import org.http4s.dsl.io._
+import org.http4s.syntax.all._
+import org.http4s.server.DefaultServiceErrorHandler
+import scala.io.Source
+import scala.concurrent.duration._
+
+class AsyncHttp4sServletSuite extends Http4sSuite {
+  lazy val service = HttpRoutes
+    .of[IO] {
+      case GET -> Root / "simple" =>
+        Ok("simple")
+      case req @ POST -> Root / "echo" =>
+        Ok(req.body)
+      case GET -> Root / "shifted" =>
+        IO.shift(munitExecutionContext) *>
+          // Wait for a bit to make sure we lose the race
+          Timer[IO].sleep(50.millis) *>
+          Ok("shifted")
+    }
+    .orNotFound
+
+  val servletServer = ResourceFixture[Int](serverPortR)
+
+  def get(serverPort: Int, path: String): IO[String] =
+    testBlocker.delay[IO, String](
+      Source
+        .fromURL(new URL(s"http://127.0.0.1:$serverPort/$path"))
+        .getLines()
+        .mkString)
+
+  def post(serverPort: Int, path: String, body: String): IO[String] =
+    testBlocker.delay[IO, String] {
+      val url = new URL(s"http://127.0.0.1:$serverPort/$path")
+      val conn = url.openConnection().asInstanceOf[HttpURLConnection]
+      val bytes = body.getBytes(StandardCharsets.UTF_8)
+      conn.setRequestMethod("POST")
+      conn.setRequestProperty("Content-Length", bytes.size.toString)
+      conn.setDoOutput(true)
+      conn.getOutputStream.write(bytes)
+      Source.fromInputStream(conn.getInputStream, StandardCharsets.UTF_8.name).getLines().mkString
+    }
+
+  servletServer.test("Http4sBlockingServlet handle GET requests") { server =>
+    get(server, "simple").assertEquals("simple")
+  }
+
+  servletServer.test("Http4sBlockingServlet handle POST requests") { server =>
+    post(server, "echo", "input data").assertEquals("input data")
+  }
+
+  servletServer.test("Http4sBlockingServlet work for shifted IO") { server =>
+    get(server, "shifted").assertEquals("shifted")
+  }
+
+  lazy val servlet = new AsyncHttp4sServlet[IO](
+    service = service,
+    servletIo = new NonBlockingServletIo[IO](4096),
+    serviceErrorHandler = DefaultServiceErrorHandler[IO]
+  )
+
+  lazy val serverPortR = Resource
+    .make(IO(new EclipseServer))(server => IO(server.stop()))
+    .evalMap { server =>
+      IO {
+        val connector =
+          new ServerConnector(server, new HttpConnectionFactory(new HttpConfiguration()))
+
+        val context = new ServletContextHandler
+        context.addServlet(new ServletHolder(servlet), "/*")
+
+        server.addConnector(connector)
+        server.setHandler(context)
+
+        server.start()
+
+        connector.getLocalPort
+      }
+    }
+}