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// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.io;
import java.io.*;
import java.util.Arrays;
import java.util.List;
/**
* @author bratseth
*/
public class IOUtilsTestCase extends junit.framework.TestCase {
public void testCloseNUllDoesNotFail() {
IOUtils.closeWriter(null);
IOUtils.closeReader(null);
IOUtils.closeInputStream(null);
IOUtils.closeOutputStream(null);
}
public void testFileWriter() throws IOException {
IOUtils.writeFile("temp1.txt", "hello",false);
assertEquals("hello", IOUtils.readFile(new File("temp1.txt")));
new File("temp1.txt").delete();
}
public void testFileWriterWithoutEncoding() throws IOException {
BufferedWriter writer=null;
try {
writer=IOUtils.createWriter(new File("temp2.txt"),false);
writer.write("hello");
}
finally {
IOUtils.closeWriter(writer);
}
assertEquals("hello", IOUtils.readFile(new File("temp2.txt")));
new File("temp2.txt").delete();
}
public void testFileWriterWithoutEncodingFromFileName() throws IOException {
BufferedWriter writer=null;
try {
writer=IOUtils.createWriter("temp3.txt",false);
writer.write("hello");
}
finally {
IOUtils.closeWriter(writer);
}
assertEquals("hello",IOUtils.readFile(new File("temp3.txt")));
new File("temp3.txt").delete();
}
public void testFileCounting() throws IOException {
IOUtils.writeFile("temp4.txt","hello\nworld",false);
assertEquals(2,IOUtils.countLines("temp4.txt"));
new File("temp4.txt").delete();
}
public void testFileCopy() throws IOException {
IOUtils.writeFile("temp5.txt","hello",false);
IOUtils.copy(new File("temp5.txt"), new File("temp5copy.txt"));
assertEquals("hello", IOUtils.readFile(new File("temp5copy.txt")));
new File("temp5.txt").delete();
new File("temp5copy.txt").delete();
}
public void testFileCopyWithLineCap() throws IOException {
IOUtils.writeFile("temp6.txt","hello\nyou\nworld",false);
IOUtils.copy("temp6.txt","temp6copy.txt",2);
assertEquals("hello\nyou\n", IOUtils.readFile(new File("temp6copy.txt")));
new File("temp6.txt").delete();
new File("temp6copy.txt").delete();
}
public void testGetLines() throws IOException {
IOUtils.writeFile("temp7.txt","hello\nworld",false);
List<String> lines=IOUtils.getLines("temp7.txt");
assertEquals(2,lines.size());
assertEquals("hello",lines.get(0));
assertEquals("world",lines.get(1));
new File("temp7.txt").delete();
}
public void testFileWriterAppend() throws IOException {
boolean append=true;
IOUtils.writeFile("temp8.txt", "hello",!append);
BufferedWriter writer=null;
try {
writer=IOUtils.createWriter(new File("temp8.txt"),append);
writer.write("\nworld");
}
finally {
IOUtils.closeWriter(writer);
}
assertEquals("hello\nworld", IOUtils.readFile(new File("temp8.txt")));
new File("temp8.txt").delete();
}
public void testCloseAllReaders() throws IOException {
StringReader reader1=new StringReader("hello");
StringReader reader2=new StringReader("world");
IOUtils.closeAll(Arrays.<Reader>asList(reader1, reader2));
try {
reader1.ready();
fail("Expected exception due to reader closed");
}
catch (IOException e) {
// Expected
}
try {
reader2.ready();
fail("Expected exception due to reader closed");
}
catch (IOException e) {
// Expected
}
}
public void testDirCopying() throws IOException {
IOUtils.writeFile("temp1/temp1.txt","hello",false);
IOUtils.writeFile("temp1/temp2.txt","world",false);
IOUtils.copyDirectory(new File("temp1"), new File("temp2"));
assertEquals("hello", IOUtils.readFile(new File("temp2/temp1.txt")));
assertEquals("world", IOUtils.readFile(new File("temp2/temp2.txt")));
IOUtils.recursiveDeleteDir(new File("temp1"));
IOUtils.recursiveDeleteDir(new File("temp2"));
assertTrue(!new File("temp1").exists());
assertTrue(!new File("temp2").exists());
}
public void testDirCopyingWithFilter() throws IOException {
IOUtils.writeFile("temp1/temp1.txt","hello",false);
IOUtils.writeFile("temp1/temp2.txt","world",false);
IOUtils.writeFile("temp1/temp3.json", "world", false);
IOUtils.copyDirectory(new File("temp1"), new File("temp2"), -1, new FilenameFilter() {
@Override
public boolean accept(File dir, String name) {
return name.endsWith(".json");
}
});
assertEquals("world", IOUtils.readFile(new File("temp2/temp3.json")));
assertFalse(new File("temp2/temp1.txt").exists());
assertFalse(new File("temp2/temp2.txt").exists());
IOUtils.recursiveDeleteDir(new File("temp1"));
IOUtils.recursiveDeleteDir(new File("temp2"));
assertTrue(!new File("temp1").exists());
assertTrue(!new File("temp2").exists());
}
}
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