package testing;
import org.junit.Before;
import connection.DataConnection;
import java.util.ArrayList;
import org.junit.Test;
import static org.junit.Assert.*;

/**
 * JUnit tests for EnglishTesting.java
 * Testing logic which works with DB
 * Testing logic methods getResults(), calcPercent(),calcSkill()
 * @author Shpatserman Maria
 */
public class EnglishTestingTest {
    /**
     * Stub class - Data Connection
     */
    public class StubDBconnect implements DataConnection{

        public String returnRandomWord() {
            return "Hello";
        }

        public ArrayList<String> returnAnswersByWord(String englishWord) {
            ArrayList<String> answersList = new ArrayList<String>();
            answersList.add("привет");
            return answersList;

        }

    }
    private StubDBconnect data;
    private EnglishTesting test;
    @Before
    public void instantiate() {
        test = new EnglishTesting();
        data = new StubDBconnect();
        
    }
    //Logic tests
    @Test
    public void testCalcPercentNullQuestions(){
        test.countQuests=0;
        assertEquals("100%",test.calcPercent());
    }
    @Test
    public void testCalcPercent(){
        //Test data
        test.countQuests=4;
        test.skill = 2;
        assertEquals("50%", test.calcPercent());
    }
    @Test
    public void testCalcSkillIncrement(){
        //Test data
        test.countQuests=0;
        test.skill = 0;
        //CorrectAnswer
        test.calcSkill("Hello", "привет", 1, data);
        //Check skills
        assertTrue(test.skill==1);
        
        
    }
    @Test
    public void testCalcSkillIncrementErrors(){
        //Test data
        test.countQuests=0;
        test.errors = 0;
        //IncorrectAnswer
        test.calcSkill("Hello", "пока", 1, data);
        //Check errors
        assertTrue(test.errors==1);


    }


    @Test
    public void testGetResultsExcelent(){
        //Test data
        test.errors = 0;
        test.countQuests =1;
        test.skill=1;
        String result = test.getResults();
        String expect = "Великолепно! \n"+
                "Результат 100%\n"+
                "Правильных ответов 1 из 1";
        assertEquals(expect, result);


    }
    @Test
    public void testGetResultsGood(){
        //Test data
        test.errors = 1;
        test.countQuests =2;
        test.skill=1;
        test.improperAnswers="";
        
        String result = test.getResults();
        String expect = "Результат 50%\n"+
                "Правильных ответов 1 из 2\n"+
                "Ошибок 1\n";
        assertEquals(expect, result);
    }
    //Work with Data
    @Test
    public void testGetEnglishWord(){
        
        //StubDBconnect data = new StubDBconnect();
        String word = test.getEngWord(data);
        assertEquals("Hello",word);

        
    }

    @Test
    public void testCheckAnswer(){
        
        //StubDBconnect data = new StubDBconnect();
        assertTrue(test.checkAnswer("Hello", "привет", data));
    }
    @Test
    public void testCheckIncorrectAnswer(){
        
        //StubDBconnect data = new StubDBconnect();
        assertFalse(test.checkAnswer("Hello", "пока", data));
    }
    @Test
    public void testGenerateAnswerForImproperWord(){
        
        //StubDBconnect data = new StubDBconnect();
        String result = test.generateAnswerForImproperWord("Hello", "пока", 1, data);
        String standard = "Неправильный ответ на вопрос № 1\n"+
                "Слово Hello\n"+
                "Ваш ответ пока\n"+
                "Правильный ответ [привет]";
        assertEquals(standard,result);
    }
    
   
}