JunitExam(1)

 /*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

package junitExam;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
import junit.framework.TestCase;


/**
 *
 * @author 

 */
public class FileReaderTester extends TestCase{
    /**
     * A constructor is required here!
     * @param name
     */
    public FileReaderTester(String name){
        super(name);
    }
    
    private FileReader _input;
    
    private FileReader _empty;
    
    int  [] a;
    
    /**
     * Create objects.
     */
    @Override
    protected void setUp(){
        try{
            _input = new FileReader("E:/data.txt");
            _empty = newEmptyFile();
            //Collections.unmodifiableSet(s);
        }  catch (FileNotFoundException e){
            throw new RuntimeException("unable to open test file");
        }  catch (IOException ex) {
            Logger.getLogger(FileReaderTester.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

    /**
     * Remove objects.
     */
    @Override
    protected void tearDown(){
        try{
            _input.close();
        } catch (IOException e){
            throw new RuntimeException("error on closing test file");
        }
    }
    
    public void testRead() throws IOException {
        char ch = '&';
        //_input.close();
        for(int i = 0;i < 4;i++){
            ch = (char) _input.read();
            //System.out.println(ch);
            assert('d' == ch);//鍙鏈夊氨瀵广€?            //assertEquals('B',ch);//match fist 4 characters.
        }
    }
    
    public void testReadAtEnd() throws IOException{
        int ch = -1234;
        for(int i = 1;i < 140;i++) {
            ch = _input.read();
            System.out.println("testReadAtEnd");
            System.out.println(ch);
            assertEquals("read at end",-1,_input.read());
        }
    }
    
    public void testReadBoundaries() throws IOException{
        assertEquals("read first char",'B',_input.read());
        int ch ;
        for(int i = 1;i < 140;i++) {
            ch = _input.read();
            System.out.println("testReadBoundaries");
            System.out.println(ch);
            assertEquals("read last char",'6',_input.read());
            assertEquals("read at end",-1,_input.read());
            assertEquals("read past end",-1,_input.read());
        }
    }
    
    public void testReadAfterClose() throws IOException {
        _input.close();
        try {
             _input.read(); 
             //IOException涔嬪鐨勪换浣曞紓甯搁兘灏嗕互涓€鑸柟寮忓舰鎴愪竴涓敊璇€?             fail ("no exception for read past end");
       } catch (IOException io) {}
    }
    
    private FileReader newEmptyFile() throws FileNotFoundException, IOException {
        File empty = new File ("empty.txt");
        FileOutputStream out = new FileOutputStream(empty);
        out.close();
        return new FileReader(empty);
    }
     public void tesEmptyRead() throws IOException{       
            assertEquals(-1,_input.read());   
    }
     //convert array to list
    List _skill = new ArrayList();
    
    String [] getSkills(){
        return (String[]) _skill.toArray(new String[0]);
    }
    void setSkill(int index,String newSkill){
        _skill.set(index, newSkill);
    }
}