refactor(mockwebserver): DefaultMockServerWebSocketTest uses Vert.x to perform verifications

junit/mockwebserver/src/test/groovy/io/fabric8/mockwebserver/DefaultMockServerWebSocketTest.groovy

@@ -15,153 +15,192 @@
  */
 package io.fabric8.mockwebserver
 
-import okhttp3.OkHttpClient
-import okhttp3.Request
-import okhttp3.Response
-import okhttp3.WebSocket
-import okhttp3.WebSocketListener
+import io.vertx.core.AsyncResult
+import io.vertx.core.Handler
+import io.vertx.core.Vertx
+import io.vertx.core.http.WebSocket
+import io.vertx.core.http.WebSocketClient
+import io.vertx.core.http.WebSocketConnectOptions
 import spock.lang.Shared
 import spock.lang.Specification
+import spock.util.concurrent.AsyncConditions
 
+import java.util.concurrent.ArrayBlockingQueue
 import java.util.concurrent.CompletableFuture
 import java.util.concurrent.CountDownLatch
 import java.util.concurrent.TimeUnit
-import java.util.stream.Collectors
 import java.util.stream.IntStream
 
 class DefaultMockServerWebSocketTest extends Specification {
 
+  @Shared
+  static def vertx = Vertx.vertx()
+
   DefaultMockServer server
 
-  @Shared
-  OkHttpClient client = new OkHttpClient()
+  WebSocketClient wsClient
 
   def setup() {
     server = new DefaultMockServer()
     server.start()
+    wsClient = vertx.createWebSocketClient()
   }
 
   def cleanup() {
     server.shutdown()
+    wsClient.close()
   }
 
   def "andUpgradeToWebSocket, with configured events, should emit events"() {
-    given:
-    server.expect()
-        .withPath("/websocket")
-        .andUpgradeToWebSocket().open().waitFor(10L).andEmit("A text message").done().always()
-    def future = new CompletableFuture()
-    when:
-    def ws = client.newWebSocket(new Request.Builder().url(server.url("/websocket")).build(), new WebSocketListener() {
-      @Override
-      void onMessage(WebSocket webSocket, String text) {
-        future.complete(text)
+    given: "A WebSocket expectation"
+      server.expect().withPath("/websocket")
+        .andUpgradeToWebSocket()
+        .open()
+        .waitFor(10L).andEmit("A text message")
+        .done()
+        .always()
+    and:
+      Queue<String> messages = new ArrayBlockingQueue<>(1)
+    and: "A WebSocket request"
+      def wsReq = wsClient.webSocket().connect(server.port, server.getHostName(), "/websocket")
+    and: "A WebSocket listener"
+      wsReq.onComplete { ws ->
+        ws.result().textMessageHandler { text ->
+          messages.add(text)
+        }
+        ws.result().closeHandler { _ ->
+          ws.result().close()
+        }
       }
-    })
-    then:
-    assert future.get(100L, TimeUnit.MILLISECONDS) == "A text message"
-    cleanup:
-    ws.close(1000, "Test finished")
+    and: "An instance of AsyncConditions"
+      def async = new AsyncConditions(1)
+
+    when: "The request is sent and completed"
+      async.evaluate {
+        assert messages.poll(10, TimeUnit.SECONDS) == "A text message"
+      }
+
+    then: "Expect the result to be completed in the specified time"
+      async.await(10)
   }
 
   def "andUpgradeToWebSocket, with configured events, should emit onClose when done"() {
-    given:
-    server.expect()
-        .withPath("/websocket")
-        .andUpgradeToWebSocket().open().immediately().andEmit("event").done().always()
-    def future = new CompletableFuture()
-    when:
-    def ws = client.newWebSocket(new Request.Builder().url(server.url("/websocket")).build(), new WebSocketListener() {
-      @Override
-      void onClosing(WebSocket webSocket, int code, String reason) {
-        future.complete(reason)
+    given: "A WebSocket expectation"
+      server.expect()
+          .withPath("/websocket")
+          .andUpgradeToWebSocket().open().immediately().andEmit("event").done().always()
+    and:
+      def future = new CompletableFuture()
+    and: "A WebSocket request"
+      def wsReq = wsClient.webSocket().connect(server.port, server.getHostName(), "/websocket")
+    and: "A WebSocket listener"
+      wsReq.onComplete { ws ->
+        ws.result().closeHandler { _ ->
+          ws.result().close()
+          future.complete(ws.result().closeReason())
+        }
+      }
+    and: "An instance of AsyncConditions"
+      def async = new AsyncConditions(1)
+
+    when: "The request is sent and completed"
+      async.evaluate {
+        assert future.get(10, TimeUnit.SECONDS) == "Closing..."
       }
-    })
-    then:
-    assert future.get(100L, TimeUnit.MILLISECONDS) == "Closing..."
+
+    then: "Expect the result to be completed in the specified time"
+      async.await(10)
   }
 
   def "andUpgradeToWebSocket, with no events, should emit onClose"() {
-    given:
-    server.expect()
-        .withPath("/websocket")
-        .andUpgradeToWebSocket().open().done().always()
-    def future = new CompletableFuture()
-    when:
-    def ws = client.newWebSocket(new Request.Builder().url(server.url("/websocket")).build(), new WebSocketListener() {
-      @Override
-      void onClosing(WebSocket webSocket, int code, String reason) {
-        future.complete(reason)
+    given: "A WebSocket expectation"
+      server.expect()
+          .withPath("/websocket")
+          .andUpgradeToWebSocket().open().done().always()
+    and:
+      def future = new CompletableFuture()
+    and: "A WebSocket request"
+      def wsReq = wsClient.webSocket().connect(server.port, server.getHostName(), "/websocket")
+    and: "A WebSocket listener"
+      wsReq.onComplete { ws ->
+        ws.result().closeHandler { _ ->
+          ws.result().close()
+          future.complete(ws.result().closeReason())
+        }
       }
-    })
-    then:
-    assert future.get(100L, TimeUnit.MILLISECONDS) == "Closing..."
+    and: "An instance of AsyncConditions"
+      def async = new AsyncConditions(1)
+
+    when: "The request is sent and completed"
+      async.evaluate {
+        assert future.get(10, TimeUnit.SECONDS) == "Closing..."
+      }
+
+    then: "Expect the result to be completed in the specified time"
+      async.await(10)
   }
 
   // https://github.com/fabric8io/mockwebserver/pull/66#issuecomment-944289335
   def "andUpgradeToWebSocket, with multiple upgrades, should emit events for all websocket listeners"() {
-    given:
-    server.expect()
-        .withPath("/websocket")
-        .andUpgradeToWebSocket().open().waitFor(10L).andEmit("A text message").done().always()
-    def latch = new CountDownLatch(15)
-    def wsListener = new WebSocketListener() {
-      @Override
-      void onMessage(WebSocket webSocket, String text) {
-        latch.countDown()
+    given: "A WebSocket expectation"
+      server.expect()
+          .withPath("/websocket")
+          .andUpgradeToWebSocket().open().waitFor(10L).andEmit("A text message").done().always()
+    and: "A CountDown latch to verify the event count"
+      def latch = new CountDownLatch(15)
+    and: "A Vert.x WebSocket completion handler"
+      Handler<AsyncResult<WebSocket>> completionHandler =  { ws ->
+        ws.result().textMessageHandler { text ->
+          latch.countDown()
+        }
+        ws.result().closeHandler { _ ->
+          ws.result().close()
+        }
+      }
+    and: "WebSocket requests"
+      IntStream.range(0, 15).forEach {i ->
+        def wsReq = wsClient.webSocket().connect(server.port, server.getHostName(), "/websocket")
+        wsReq.onComplete(completionHandler)
+      }
+    and: "An instance of AsyncConditions"
+      def async = new AsyncConditions(1)
+
+    when: "The requests are sent and completed"
+      async.evaluate {
+        assert latch.await(10, TimeUnit.SECONDS)
       }
-    }
-    when:
-    def wss = IntStream.range(0, 15).mapToObj(i ->
-        client.newWebSocket(new Request.Builder().url(server.url("/websocket")).build(), wsListener)
-    ).collect(Collectors.toList())
-    then:
-    assert latch.await(10000L, TimeUnit.MILLISECONDS)
-    cleanup:
-    wss.forEach(ws -> ws.close(1000, "Test finished"))
+
+    then: "Expect the result to be completed in the specified time"
+      async.await(10)
   }
 
   // https://github.com/fabric8io/mockwebserver/issues/77
   def "andUpgradeToWebSocket, with request header 'sec-websocket-protocol', should create response with matching header"() {
-    given:
-    server.expect()
-            .withPath("/websocket")
-            .andUpgradeToWebSocket().open().done().always()
-    def future = new CompletableFuture()
-    when:
-    def ws = client.newWebSocket(new Request.Builder().url(server.url("/websocket")).header("sec-websocket-protocol", "v4.channel.k8s.io").build(), new WebSocketListener() {
-      @Override
-      void onOpen(WebSocket webSocket, Response response) {
-        future.complete(response.header("sec-websocket-protocol"))
+    given: "A WebSocket expectation"
+      server.expect()
+        .withPath("/websocket")
+        .andUpgradeToWebSocket().open().done().always()
+    and:
+      def future = new CompletableFuture()
+    and: "A WebSocket request"
+      def wsReq = wsClient.webSocket().connect(new WebSocketConnectOptions()
+        .setPort(server.port)
+        .setHost(server.getHostName())
+        .setURI("/websocket")
+        .addSubProtocol("v4.channel.k8s.io"))
+    and: "A WebSocket listener"
+      wsReq.onComplete { ws ->
+        future.complete(ws.result().headers().get("sec-websocket-protocol"))
       }
-    })
-    then:
-    assert future.get(100L, TimeUnit.MILLISECONDS) == "v4.channel.k8s.io"
-    cleanup:
-    ws.close(1000, "Test finished")
-  }
+    and: "An instance of AsyncConditions"
+      def async = new AsyncConditions(1)
 
-  // https://github.com/fabric8io/mockwebserver/issues/77
-  def "andUpgradeToWebSocket, with request header 'sec-websocket-protocol', should not change existing response header"() {
-    given:
-    server.expect()
-            .withPath("/websocket")
-            .andUpgradeToWebSocket()
-            .open()
-            .done()
-            .withHeader("sec-websocket-protocol", "v3.channel.k8s.io,v4.channel.k8s.io")
-            .always()
-    def future = new CompletableFuture()
-    when:
-    def ws = client.newWebSocket(new Request.Builder().url(server.url("/websocket")).header("sec-websocket-protocol", "v4.channel.k8s.io").build(), new WebSocketListener() {
-      @Override
-      void onOpen(WebSocket webSocket, Response response) {
-        future.complete(response.header("sec-websocket-protocol"))
+    when: "The request is sent and completed"
+      async.evaluate {
+        assert future.get(10, TimeUnit.SECONDS) == "v4.channel.k8s.io"
       }
-    })
-    then:
-    assert future.get(100L, TimeUnit.MILLISECONDS) == "v3.channel.k8s.io,v4.channel.k8s.io"
-    cleanup:
-    ws.close(1000, "Test finished")
+
+    then: "Expect the result to be completed in the specified time"
+      async.await(10)
   }
 }