package com.puppycrawl.tools.checkstyle.api;

import static org.junit.Assert.*;

import java.io.File;
import java.io.IOException;
import java.nio.charset.Charset;
import java.nio.charset.IllegalCharsetNameException;
import java.util.Arrays;
import java.util.List;

import org.junit.Test;

public class TestFileText {
	List<String> list1 = Arrays.asList(new String[]{
		 					"hello",
		 					"linebreak",
		 					"funkylinebreak",
		 					""
		                 });

	File file = new File("./test.txt");
	
	@Test
	public void testFileConstructor() throws IOException{
		FileText ft = new FileText(file, "UTF-8");
		assertEquals(file, ft.getFile());
		assertEquals(Charset.forName("UTF-8"), ft.getCharset());
		assertNotNull(ft.getBytes());
		assertTrue(ft.getFullText().length() > 0);
		assertTrue(ft.toLinesArray().length > 0);
		assertTrue(ft.lineColumn(17).getLine() == 3);
		
		try{
			ft.lineColumn(-1);
			fail();
		}catch(ArrayIndexOutOfBoundsException aioobe){}
		
		assertNotNull(ft.get(3));
		assertEquals(ft.size(), 6);
		
		try{
			ft = new FileText(new File("does not exist anywhere"), "UTF-8");
			fail();
		}catch(IOException ioe){}

		try{
			ft = new FileText(file, null);
			fail();
		}catch(IllegalArgumentException iae){}

		try{
			ft = new FileText(file, "non-existing charset");
			fail();
		}catch(IllegalCharsetNameException icsne){}	
	}
	
	@Test
	public void testLineConstructor() throws IOException{
		FileText ft = FileText.fromLines(file, list1);
		assertNull(ft.getCharset());
		assertNotNull(ft.getBytes());
		assertTrue(ft.getFullText().length() > 0);
		assertNotNull(ft.get(3));
		assertEquals(ft.size(), 4);
		assertTrue(ft.toLinesArray().length > 0);
		assertEquals(ft.lineColumn(3).getLine(), 1);
		assertEquals(ft.lineColumn(17).getLine(), 3);
	}
}