TextBuddyTest.java

import static org.junit.Assert.*;

import java.io.IOException;

import org.junit.Test;

public class TextBuddyTest {
	
	
	@Test
	public void testSort() throws IOException {
			
		/* sorting multiple lines (not initially in alphabetical order) in text file */
		/* 
		 * 1. c             1. a
		 * 2. a      to     2. b
		 * 3. b             3. c    
		 */
		TextBuddy tb1 = new TextBuddy("testSort1.txt");
		
		tb1.executeCommand("add c");
		tb1.executeCommand("add a");
		tb1.executeCommand("add b");
		tb1.executeCommand("sort");
		String expected1 = "1. a\n" + "2. b\n" + "3. c\n";
		assertEquals(expected1, tb1.executeCommand("display"));
	
		/* sort text file with only a single line */
		TextBuddy tb2 = new TextBuddy("testSort2.txt");
		
		tb2.executeCommand("add a");
		tb2.executeCommand("sort");
		String expected2 = "1. a\n";
		assertEquals(expected2, tb2.executeCommand("display"));
		
		/* sort empty text file */
		TextBuddy tb3 = new TextBuddy("testSort3.txt");
		
		tb3.executeCommand("sort");
		String expected3 = "testSort3.txt is empty\n";
		assertEquals(expected3, tb3.executeCommand("display"));
		
		/* test feedback message */
		String expected4 = "testSort3.txt has been sorted\n";
		assertEquals(expected4, tb3.executeCommand("sort"));
	}
	
	@Test
	public void testSearch() throws IOException {
		
		/* search for a word that is not found in the file */
		TextBuddy tb = new TextBuddy("testSearch.txt");
		
		tb.executeCommand("add apple orange mango");
		String expected1 = "\"pear\" cannot be found in any line";
		assertEquals(expected1, tb.executeCommand("search pear"));
		
		/* search for word that exists in multiple sentences */
		tb.executeCommand("add an apple a day");
		tb.executeCommand("add keeps the doctor away");
		tb.executeCommand("add I like banana");
		String expected2 = "apple orange mango\n" + "an apple a day\n";
		assertEquals(expected2, tb.executeCommand("search apple"));
		
		/* search for word among lines with words that contain the input 
		 * search word itself (eg. apple --> appletart)  */
		tb.executeCommand("add I like appletart");
		String expected3 = "apple orange mango\n" + "an apple a day\n";
		assertEquals(expected3, tb.executeCommand("search apple"));
		
		/* search an empty file */
		tb.executeCommand("clear");
		String expected4 = "\"pear\" cannot be found in any line";
		assertEquals(expected4, tb.executeCommand("search pear"));
	}
}