Add test

Author: arturobernalg

httpclient5/src/test/java/org/apache/hc/client5/http/impl/async/TestH2TunnelProtocolStarter.java

@@ -0,0 +1,83 @@
+/*
+ * ====================================================================
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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.
+ * ====================================================================
+ *
+ * This software consists of voluntary contributions made by many
+ * individuals on behalf of the Apache Software Foundation.  For more
+ * information on the Apache Software Foundation, please see
+ * <http://www.apache.org/>.
+ *
+ */
+package org.apache.hc.client5.http.impl.async;
+
+import org.apache.hc.core5.http.config.CharCodingConfig;
+import org.apache.hc.core5.http2.config.H2Config;
+import org.apache.hc.core5.http2.impl.nio.ClientH2PrefaceHandler;
+import org.apache.hc.core5.reactor.IOEventHandler;
+import org.apache.hc.core5.reactor.ProtocolIOSession;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+import org.mockito.Mockito;
+
+class TestH2TunnelProtocolStarter {
+
+    @Test
+    void testCreatesMinimalH2HandlerWithoutPushOrLogging() {
+        final H2TunnelProtocolStarter starter = new H2TunnelProtocolStarter(
+                H2Config.DEFAULT, CharCodingConfig.DEFAULT);
+        final ProtocolIOSession ioSession = Mockito.mock(ProtocolIOSession.class);
+        Mockito.when(ioSession.getId()).thenReturn("test-tunnel");
+
+        final IOEventHandler handler = starter.createHandler(ioSession, null);
+
+        Assertions.assertNotNull(handler);
+        Assertions.assertInstanceOf(ClientH2PrefaceHandler.class, handler);
+    }
+
+    @Test
+    void testDefaultsWhenNullConfig() {
+        final H2TunnelProtocolStarter starter = new H2TunnelProtocolStarter(null, null);
+        final ProtocolIOSession ioSession = Mockito.mock(ProtocolIOSession.class);
+        Mockito.when(ioSession.getId()).thenReturn("test-tunnel-null");
+
+        final IOEventHandler handler = starter.createHandler(ioSession, null);
+
+        Assertions.assertNotNull(handler);
+        Assertions.assertInstanceOf(ClientH2PrefaceHandler.class, handler);
+    }
+
+    @Test
+    void testCustomH2ConfigIsRespected() {
+        final H2Config customConfig = H2Config.custom()
+                .setMaxFrameSize(32768)
+                .setInitialWindowSize(128 * 1024)
+                .setPushEnabled(false)
+                .build();
+        final H2TunnelProtocolStarter starter = new H2TunnelProtocolStarter(
+                customConfig, CharCodingConfig.DEFAULT);
+        final ProtocolIOSession ioSession = Mockito.mock(ProtocolIOSession.class);
+        Mockito.when(ioSession.getId()).thenReturn("test-tunnel-custom");
+
+        final IOEventHandler handler = starter.createHandler(ioSession, null);
+
+        Assertions.assertNotNull(handler);
+        Assertions.assertInstanceOf(ClientH2PrefaceHandler.class, handler);
+    }
+
+}