| /**************************************************************** |
| * 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.james.mime4j.io; |
| |
| import org.junit.Assert; |
| import org.junit.Test; |
| |
| import java.io.IOException; |
| |
| public class LineNumberInputStreamTest { |
| /** |
| * Tests that reading single bytes updates the line number appropriately. |
| */ |
| @Test |
| public void testReadSingleByte() throws IOException { |
| String s = "Yada\r\nyada\r\nyada\r\n"; |
| LineNumberInputStream is = new LineNumberInputStream(InputStreams.createAscii(s)); |
| |
| for (int i = 0; i < 6; i++) { |
| Assert.assertEquals(1, is.getLineNumber()); |
| is.read(); |
| } |
| |
| for (int i = 6; i < 12; i++) { |
| Assert.assertEquals(2, is.getLineNumber()); |
| is.read(); |
| } |
| |
| for (int i = 12; i < 18; i++) { |
| Assert.assertEquals(3, is.getLineNumber()); |
| is.read(); |
| } |
| |
| Assert.assertEquals(4, is.getLineNumber()); |
| Assert.assertEquals(-1, is.read()); |
| |
| is.close(); |
| } |
| |
| /** |
| * Tests that reading multiple bytes at once updates the line number |
| * appropriately. |
| */ |
| @Test |
| public void testReadManyBytes() throws IOException { |
| String s = "Yada\r\nyada\r\nyada\r\n"; |
| LineNumberInputStream is = new LineNumberInputStream(InputStreams.createAscii(s)); |
| |
| byte[] buf = new byte[4]; |
| Assert.assertEquals(1, is.getLineNumber()); |
| is.read(buf); |
| Assert.assertEquals(1, is.getLineNumber()); |
| is.read(buf); |
| Assert.assertEquals(2, is.getLineNumber()); |
| is.read(buf); |
| Assert.assertEquals(3, is.getLineNumber()); |
| is.read(buf); |
| Assert.assertEquals(3, is.getLineNumber()); |
| is.read(buf); |
| Assert.assertEquals(4, is.getLineNumber()); |
| |
| Assert.assertEquals(-1, is.read()); |
| |
| is.close(); |
| } |
| } |