cleanup work
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eugenp
parent
851d7c0ecf
commit
0e3c0f36df
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@ -1,4 +1,4 @@
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package test;
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package org.baeldung.java.io;
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import java.io.BufferedOutputStream;
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import java.io.BufferedReader;
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@ -32,167 +32,159 @@ public class TestWriter extends TestCase {
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private String fileName4 = "test4.txt";
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private String fileName5 = "test5.txt";
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public TestWriter(String name) {
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public TestWriter(final String name) {
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super(name);
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}
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@Override
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protected void setUp() throws Exception {
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super.setUp();
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}
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@Override
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protected void tearDown() throws Exception {
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super.tearDown();
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}
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public void whenWriteStringUsingBufferedWritter_thenCorrect() throws IOException{
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String str = "Hello";
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BufferedWriter writer = new BufferedWriter(new FileWriter(fileName3));
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public void whenWriteStringUsingBufferedWritter_thenCorrect() throws IOException {
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final String str = "Hello";
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final BufferedWriter writer = new BufferedWriter(new FileWriter(fileName3));
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writer.write(str);
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writer.close();
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}
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public void whenAppendStringUsingBufferedWritter_thenOldContentShouldExistToo() throws IOException{
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String str = "World";
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BufferedWriter writer = new BufferedWriter(new FileWriter(fileName3 , true));
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public void whenAppendStringUsingBufferedWritter_thenOldContentShouldExistToo() throws IOException {
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final String str = "World";
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final BufferedWriter writer = new BufferedWriter(new FileWriter(fileName3, true));
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writer.append(' ');
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writer.append(str);
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writer.close();
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}
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public void whenWriteFormattedStringUsingPrintWriter_thenOutputShouldBeFormatted() throws IOException{
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FileWriter fileWriter = new FileWriter(fileName);
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PrintWriter printWriter = new PrintWriter(fileWriter);
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printWriter.printf("Product name is %s and its price is %d $","iPhone",1000);
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public void whenWriteFormattedStringUsingPrintWriter_thenOutputShouldBeFormatted() throws IOException {
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final FileWriter fileWriter = new FileWriter(fileName);
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final PrintWriter printWriter = new PrintWriter(fileWriter);
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printWriter.printf("Product name is %s and its price is %d $", "iPhone", 1000);
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printWriter.close();
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}
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public void whenWriteStringUsingFileOutputStream_thenCorrect() throws IOException{
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String str = "Hello";
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FileOutputStream outputStream = new FileOutputStream(fileName3);
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byte[] strToBytes = str.getBytes();
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public void whenWriteStringUsingFileOutputStream_thenCorrect() throws IOException {
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final String str = "Hello";
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final FileOutputStream outputStream = new FileOutputStream(fileName3);
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final byte[] strToBytes = str.getBytes();
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outputStream.write(strToBytes);
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outputStream.close();
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}
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public void whenWriteStringWithDataOutputStream_thenReadShouldBeTheSame() throws IOException {
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String value = "Hello";
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FileOutputStream fos = new FileOutputStream(fileName1);
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DataOutputStream outStream = new DataOutputStream(new BufferedOutputStream(fos));
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final String value = "Hello";
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final FileOutputStream fos = new FileOutputStream(fileName1);
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final DataOutputStream outStream = new DataOutputStream(new BufferedOutputStream(fos));
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outStream.writeUTF(value);
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outStream.close();
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String result;
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FileInputStream fis = new FileInputStream(fileName1);
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DataInputStream reader = new DataInputStream(fis);
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final FileInputStream fis = new FileInputStream(fileName1);
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final DataInputStream reader = new DataInputStream(fis);
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result = reader.readUTF();
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reader.close();
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assertEquals(value, result);
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}
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public void whenWriteToPositionAndEditIt_thenItShouldChange() {
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int data1 = 2014;
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int data2 = 1500;
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final int data1 = 2014;
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final int data2 = 1500;
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testWriteToPosition(data1, 4);
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assertEquals(data1, testReadFromPosition(4));
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testWriteToPosition(data2, 4);
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assertEquals(data2, testReadFromPosition(4));
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}
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public void whenTryToLockFile_thenItShouldBeLocked() throws IOException {
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RandomAccessFile stream = new RandomAccessFile(fileName4, "rw");
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FileChannel channel = stream.getChannel();
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final RandomAccessFile stream = new RandomAccessFile(fileName4, "rw");
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final FileChannel channel = stream.getChannel();
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FileLock lock = null;
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try {
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lock = channel.tryLock();
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} catch (OverlappingFileLockException e) {
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} catch (final OverlappingFileLockException e) {
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stream.close();
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channel.close();
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}
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stream.writeChars("test lock");
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lock.release();
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stream.close();
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channel.close();
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}
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public void whenWriteStringUsingFileChannel_thenReadShouldBeTheSame() throws IOException{
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RandomAccessFile stream = new RandomAccessFile(fileName5, "rw");
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FileChannel channel = stream.getChannel();
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String value = "Hello";
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byte[] strBytes = value.getBytes();
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ByteBuffer buffer = ByteBuffer.allocate(strBytes.length);
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public void whenWriteStringUsingFileChannel_thenReadShouldBeTheSame() throws IOException {
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final RandomAccessFile stream = new RandomAccessFile(fileName5, "rw");
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final FileChannel channel = stream.getChannel();
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final String value = "Hello";
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final byte[] strBytes = value.getBytes();
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final ByteBuffer buffer = ByteBuffer.allocate(strBytes.length);
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buffer.put(strBytes);
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buffer.flip();
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channel.write(buffer);
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channel.write(buffer);
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stream.close();
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channel.close();
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RandomAccessFile reader = new RandomAccessFile(fileName5, "r");
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assertEquals(value , reader.readLine());
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final RandomAccessFile reader = new RandomAccessFile(fileName5, "r");
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assertEquals(value, reader.readLine());
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reader.close();
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}
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public void whenWriteToTmpFile_thenCorrect() throws IOException{
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String toWrite = "Hello";
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File tmpFile = File.createTempFile("test", ".tmp");
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FileWriter writer = new FileWriter(tmpFile);
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public void whenWriteToTmpFile_thenCorrect() throws IOException {
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final String toWrite = "Hello";
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final File tmpFile = File.createTempFile("test", ".tmp");
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final FileWriter writer = new FileWriter(tmpFile);
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writer.write(toWrite);
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writer.close();
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BufferedReader reader = new BufferedReader(new FileReader(tmpFile));
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final BufferedReader reader = new BufferedReader(new FileReader(tmpFile));
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assertEquals(toWrite, reader.readLine());
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reader.close();
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}
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public void whenWriteUsingJava7_thenCorrect() throws IOException{
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String str = "Hello";
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Path path = Paths.get(fileName3);
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byte[] strToBytes = str.getBytes();
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public void whenWriteUsingJava7_thenCorrect() throws IOException {
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final String str = "Hello";
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final Path path = Paths.get(fileName3);
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final byte[] strToBytes = str.getBytes();
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Files.write(path, strToBytes);
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String read = Files.readAllLines(path).get(0);
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final String read = Files.readAllLines(path).get(0);
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assertEquals(str, read);
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}
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// use RandomAccessFile to write data at specific position in the file
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public void testWriteToPosition(int data, long position) {
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public void testWriteToPosition(final int data, final long position) {
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try {
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RandomAccessFile writer = new RandomAccessFile(fileName2, "rw");
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final RandomAccessFile writer = new RandomAccessFile(fileName2, "rw");
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writer.seek(position);
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writer.writeInt(data);
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writer.close();
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} catch (Exception e) {
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} catch (final Exception e) {
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System.out.println(e.getLocalizedMessage());
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}
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}
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// use RandomAccessFile to read data from specific position in the file
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public int testReadFromPosition(long position) {
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public int testReadFromPosition(final long position) {
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int result = 0;
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try {
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RandomAccessFile reader = new RandomAccessFile(fileName2, "r");
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final RandomAccessFile reader = new RandomAccessFile(fileName2, "r");
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reader.seek(position);
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result = reader.readInt();
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reader.close();
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} catch (Exception e) {
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} catch (final Exception e) {
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System.out.println(e.getLocalizedMessage());
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}
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return result;
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}
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}
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