001/* 002 * jDTAUS Core Utilities 003 * Copyright (C) 2005 Christian Schulte 004 * <cs@schulte.it> 005 * 006 * This library is free software; you can redistribute it and/or 007 * modify it under the terms of the GNU Lesser General Public 008 * License as published by the Free Software Foundation; either 009 * version 2.1 of the License, or any later version. 010 * 011 * This library is distributed in the hope that it will be useful, 012 * but WITHOUT ANY WARRANTY; without even the implied warranty of 013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 014 * Lesser General Public License for more details. 015 * 016 * You should have received a copy of the GNU Lesser General Public 017 * License along with this library; if not, write to the Free Software 018 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 019 * 020 */ 021package org.jdtaus.core.io.util.test; 022 023import junit.framework.Assert; 024import org.jdtaus.core.io.it.FileOperationsTest; 025import org.jdtaus.core.io.util.FlushableFileOperations; 026import org.jdtaus.core.io.util.MemoryFileOperations; 027 028/** 029 * Testcase for {@code FlushableFileOperations} implementations. 030 * 031 * @author <a href="mailto:cs@schulte.it">Christian Schulte</a> 032 * @version $JDTAUS: FlushableFileOperationsTest.java 8641 2012-09-27 06:45:17Z schulte $ 033 */ 034public abstract class FlushableFileOperationsTest extends FileOperationsTest 035{ 036 //--FlushableFileOperationsTest--------------------------------------------- 037 038 /** {@code MemoryFileOperations} backing the test instance. */ 039 private MemoryFileOperations memoryOps; 040 041 /** 042 * Gets the {@code MemoryFileOperations} backing the test instance. 043 * 044 * @return the {@code MemoryFileOperations} backing the test instance. 045 */ 046 public final MemoryFileOperations getMemoryFileOperations() 047 { 048 if ( this.memoryOps == null ) 049 { 050 this.memoryOps = new MemoryFileOperations(); 051 } 052 053 return this.memoryOps; 054 } 055 056 /** 057 * Gets the {@code FlushableFileOperations} implementation tests are 058 * performed with. 059 * 060 * @return the {@code FlushableFileOperations} implementation tests are 061 * performed with. 062 */ 063 public final FlushableFileOperations getFlushableFileOperations() 064 { 065 return ( FlushableFileOperations ) this.getFileOperations(); 066 } 067 068 //---------------------------------------------FlushableFileOperationsTest-- 069 //--TestCase---------------------------------------------------------------- 070 071 protected void runTest() throws Throwable 072 { 073 super.runTest(); 074 this.testFlush(); 075 } 076 077 //----------------------------------------------------------------TestCase-- 078 //--Tests------------------------------------------------------------------- 079 080 /** 081 * Tests the {@link FlushableFileOperations#flush()} method. 082 */ 083 public void testFlush() throws Exception 084 { 085 assert this.getFlushableFileOperations() != null; 086 087 final FlushableFileOperations ops = this.getFlushableFileOperations(); 088 089 ops.write( this.getTestFile() ); 090 ops.flush(); 091 092 final byte[] x = new byte[ 1 ]; 093 x[0] = "X".getBytes( "US-ASCII" )[0]; 094 ops.setFilePointer( 0L ); 095 ops.write( x, 0, 1 ); 096 ops.setFilePointer( ops.getLength() - 1L ); 097 ops.write( x, 0, 1 ); 098 ops.flush(); 099 100 final String flushed = new String( this.getMemoryFileOperations(). 101 getData(), "US-ASCII" ); 102 103 Assert.assertEquals( "XBCDEFGHIJKLMNOPQRSTUVWXYX", flushed ); 104 ops.setLength( 0L ); 105 } 106 107 //-------------------------------------------------------------------Tests-- 108}