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Commons IO example source code file (FileWriterWithEncodingTest.java)
The Commons IO FileWriterWithEncodingTest.java source code/* * 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.commons.io.output; import java.io.File; import java.io.FileOutputStream; import java.io.FileWriter; import java.io.IOException; import java.io.OutputStreamWriter; import java.io.Writer; import java.nio.charset.Charset; import java.util.Map; import junit.framework.AssertionFailedError; import org.apache.commons.io.FileUtils; import org.apache.commons.io.IOUtils; import org.apache.commons.io.testtools.FileBasedTestCase; /** * Tests that the encoding is actually set and used. * * @version $Revision: 1006295 $ $Date: 2010-10-10 15:15:51 +0100 (Sun, 10 Oct 2010) $ */ public class FileWriterWithEncodingTest extends FileBasedTestCase { private String defaultEncoding; private File file1; private File file2; private String textContent; public FileWriterWithEncodingTest(String name) { super(name); } @Override public void setUp() { File encodingFinder = new File(getTestDirectory(), "finder.txt"); OutputStreamWriter out = null; try { out = new OutputStreamWriter(new FileOutputStream(encodingFinder)); defaultEncoding = out.getEncoding(); } catch (IOException ex) { throw new RuntimeException(ex.getMessage()); } finally { IOUtils.closeQuietly(out); } file1 = new File(getTestDirectory(), "testfile1.txt"); file2 = new File(getTestDirectory(), "testfile2.txt"); char[] arr = new char[1024]; for (int i = 0; i < arr.length; i++) { arr[i] = (char) i; } textContent = new String(arr); } @Override public void tearDown() throws Exception { FileUtils.deleteDirectory(getTestDirectory()); defaultEncoding = null; textContent = null; } //----------------------------------------------------------------------- public void testSameEncoding() throws Exception { FileWriter fw1 = null; FileWriterWithEncoding fw2 = null; try { fw1 = new FileWriter(file1); // default encoding fw2 = new FileWriterWithEncoding(file2, defaultEncoding); assertEquals(true, file1.exists()); assertEquals(true, file2.exists()); fw1.write(textContent); fw2.write(textContent); fw1.flush(); fw2.flush(); checkFile(file1, file2); } finally { IOUtils.closeQuietly(fw1); IOUtils.closeQuietly(fw2); } assertEquals(true, file1.exists()); assertEquals(true, file2.exists()); } public void testDifferentEncoding() throws Exception { Map<String, Charset> map = Charset.availableCharsets(); if (map.containsKey("UTF-16BE")) { FileWriter fw1 = null; FileWriterWithEncoding fw2 = null; try { fw1 = new FileWriter(file1); // default encoding fw2 = new FileWriterWithEncoding(file2, defaultEncoding); assertEquals(true, file1.exists()); assertEquals(true, file2.exists()); fw1.write(textContent); fw2.write(textContent); fw1.flush(); fw2.flush(); try { checkFile(file1, file2); fail(); } catch (AssertionFailedError ex) { // success } } finally { IOUtils.closeQuietly(fw1); IOUtils.closeQuietly(fw2); } assertEquals(true, file1.exists()); assertEquals(true, file2.exists()); } if (map.containsKey("UTF-16LE")) { FileWriter fw1 = null; FileWriterWithEncoding fw2 = null; try { fw1 = new FileWriter(file1); // default encoding fw2 = new FileWriterWithEncoding(file2, defaultEncoding); assertEquals(true, file1.exists()); assertEquals(true, file2.exists()); fw1.write(textContent); fw2.write(textContent); fw1.flush(); fw2.flush(); try { checkFile(file1, file2); fail(); } catch (AssertionFailedError ex) { // success } } finally { IOUtils.closeQuietly(fw1); IOUtils.closeQuietly(fw2); } assertEquals(true, file1.exists()); assertEquals(true, file2.exists()); } } //----------------------------------------------------------------------- public void testConstructor_File_encoding_badEncoding() { Writer writer = null; try { writer = new FileWriterWithEncoding(file1, "BAD-ENCODE"); fail(); } catch (IOException ex) { // expected assertEquals(false, file1.exists()); } finally { IOUtils.closeQuietly(writer); } assertEquals(false, file1.exists()); } //----------------------------------------------------------------------- public void testConstructor_File_directory() { Writer writer = null; try { writer = new FileWriterWithEncoding(getTestDirectory(), defaultEncoding); fail(); } catch (IOException ex) { // expected assertEquals(false, file1.exists()); } finally { IOUtils.closeQuietly(writer); } assertEquals(false, file1.exists()); } //----------------------------------------------------------------------- public void testConstructor_File_nullFile() throws IOException { Writer writer = null; try { writer = new FileWriterWithEncoding((File) null, defaultEncoding); fail(); } catch (NullPointerException ex) { // expected assertEquals(false, file1.exists()); } finally { IOUtils.closeQuietly(writer); } assertEquals(false, file1.exists()); } //----------------------------------------------------------------------- public void testConstructor_fileName_nullFile() throws IOException { Writer writer = null; try { writer = new FileWriterWithEncoding((String) null, defaultEncoding); fail(); } catch (NullPointerException ex) { // expected assertEquals(false, file1.exists()); } finally { IOUtils.closeQuietly(writer); } assertEquals(false, file1.exists()); } } Other Commons IO examples (source code examples)Here is a short list of links related to this Commons IO FileWriterWithEncodingTest.java source code file: |
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