Java tutorial
/* * 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. */ package org.apache.dubbo.qos.server.handler; import io.netty.channel.ChannelFuture; import io.netty.channel.ChannelFutureListener; import io.netty.channel.ChannelHandlerContext; import org.junit.jupiter.api.Test; import org.mockito.ArgumentCaptor; import org.mockito.Mockito; import static org.hamcrest.Matchers.contains; import static org.hamcrest.Matchers.containsString; import static org.hamcrest.MatcherAssert.assertThat; import static org.mockito.Mockito.mock; import static org.mockito.Mockito.verify; import static org.mockito.Mockito.when; public class TelnetProcessHandlerTest { @Test public void testPrompt() throws Exception { ChannelHandlerContext context = mock(ChannelHandlerContext.class); TelnetProcessHandler handler = new TelnetProcessHandler(); handler.channelRead0(context, ""); verify(context).writeAndFlush(QosProcessHandler.prompt); } @Test public void testBye() throws Exception { ChannelHandlerContext context = mock(ChannelHandlerContext.class); TelnetProcessHandler handler = new TelnetProcessHandler(); ChannelFuture future = mock(ChannelFuture.class); when(context.writeAndFlush("BYE!\n")).thenReturn(future); handler.channelRead0(context, "quit"); verify(future).addListener(ChannelFutureListener.CLOSE); } @Test public void testUnknownCommand() throws Exception { ChannelHandlerContext context = mock(ChannelHandlerContext.class); TelnetProcessHandler handler = new TelnetProcessHandler(); handler.channelRead0(context, "unknown"); ArgumentCaptor<String> captor = ArgumentCaptor.forClass(String.class); verify(context, Mockito.atLeastOnce()).writeAndFlush(captor.capture()); assertThat(captor.getAllValues(), contains("unknown :no such command", "\r\ndubbo>")); } @Test public void testGreeting() throws Exception { ChannelHandlerContext context = mock(ChannelHandlerContext.class); TelnetProcessHandler handler = new TelnetProcessHandler(); handler.channelRead0(context, "greeting"); ArgumentCaptor<String> captor = ArgumentCaptor.forClass(String.class); verify(context).writeAndFlush(captor.capture()); assertThat(captor.getValue(), containsString("greeting")); assertThat(captor.getValue(), containsString("dubbo>")); } }