/* * Copyright 1999-2011 Alibaba Group. * * 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 com.alibaba.dubbo.common.io; import java.io.InputStream; import java.io.PushbackInputStream; import org.junit.Test; import static org.junit.Assert.*; /** * @author ding.lid */ public class StreamUtilsTest { @Test public void testMarkSupportedInputStream() throws Exception { InputStream is = StreamUtilsTest.class.getResourceAsStream("/StreamUtilsTest.txt"); assertEquals(10, is.available()); is = new PushbackInputStream(is); assertEquals(10, is.available()); assertFalse(is.markSupported()); is = StreamUtils.markSupportedInputStream(is); assertEquals(10, is.available()); is.mark(0); assertEquals((int) '0', is.read()); assertEquals((int) '1', is.read()); is.reset(); assertEquals((int) '0', is.read()); assertEquals((int) '1', is.read()); assertEquals((int) '2', is.read()); is.mark(0); assertEquals((int) '3', is.read()); assertEquals((int) '4', is.read()); assertEquals((int) '5', is.read()); is.reset(); assertEquals((int) '3', is.read()); assertEquals((int) '4', is.read()); is.mark(0); assertEquals((int) '5', is.read()); assertEquals((int) '6', is.read()); is.reset(); assertEquals((int) '5', is.read()); assertEquals((int) '6', is.read()); assertEquals((int) '7', is.read()); assertEquals((int) '8', is.read()); assertEquals((int) '9', is.read()); assertEquals(-1, is.read()); assertEquals(-1, is.read()); is.mark(0); assertEquals(-1, is.read()); assertEquals(-1, is.read()); is.reset(); assertEquals(-1, is.read()); assertEquals(-1, is.read()); } }