package de.memtext.stat;

import static org.junit.Assert.assertEquals;

import java.util.Arrays;
import java.util.Collection;
import java.util.Vector;

import org.junit.Test;

/**
 * Class to test {@link de.memtext.stat.Statistics} 
 * @author hiber
 */

public class StatisticsTest {
    
    private final int DELTA = 0;
    
    @Test
    @SuppressWarnings({ "deprecation", "static-method" })
    public void testGetAverageFromCollection() {
        double expected = 4.0;
        Collection<Integer> numbers = Arrays.asList(Integer.valueOf(0),
                                            Integer.valueOf(2),
                                            Integer.valueOf(4),
                                            Integer.valueOf(6),
                                            Integer.valueOf(8));
        double actualAverage = Statistics.getAverage(numbers);
        assertEquals("Average calculated as expected", expected, actualAverage, this.DELTA);
    }
    
    @Test
    @SuppressWarnings({ "deprecation", "static-method" })
    public void testGetAverageFromVector() {
        double expected = 4.0;
        Vector<Integer> numbers = new Vector<>(Arrays.asList(Integer.valueOf(0),
                                                                Integer.valueOf(2),
                                                                Integer.valueOf(4),
                                                                Integer.valueOf(6),
                                                                Integer.valueOf(8)));
        double actualAverage = Statistics.getAverage(numbers);
        assertEquals("Average calculated as expected", expected, actualAverage, this.DELTA);
    }
}