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package cf.java.study.java.io;
import java.io.File;
import java.io.FileInputStream;
import org.apache.commons.io.FileUtils;
import org.apache.commons.lang.StringUtils;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
public class FileTests {
@Before
public void setUp() throws Exception {
}
@After
public void tearDown() throws Exception {
}
@Before
public void startTest() {
System.out.println(" Test Start " + StringUtils.repeat("-", 10));
}

@After
public void endTest() {
System.out.println('\n' + StringUtils.repeat("-", 10) + " Test End \n");
}

@Test
public void readDir() throws Exception {
File file = new File("/");

System.out.println("file: \n" + file);
// list the items in the directory
for (String str : file.list()) {
System.out.println(str);
}
}

@Test
public void readFile() throws Exception {
File file = new File("./test");

// make a FileInputStream with the file instance
FileInputStream fis = new FileInputStream(file);

// read the bytes from fis
// it is the end of file when read() returns -1
for (int re = 0; re >= 0; re = fis.read()) {
System.out.print((char)re);
}

fis.close();
}

@Test
public void readFileByApache() throws Exception {
// are you crazy?? can you be more simplier?
System.out.print(FileUtils.readFileToString(new File("./test")));
}
}