FindMajorityElementTest.java

import org.junit.Test;

import java.util.Arrays;
import java.util.Iterator;

import static org.junit.Assert.*;

public class FindMajorityElementTest {

    private Character expected;
    private String sequence;

    @Test
    public void majoritySearch1() throws Exception {
        expected = 'a';
        sequence = "aca";

        test(expected, sequence);
    }

    @Test
    public void majoritySearch2() throws Exception {
        expected = 'a';
        sequence = "bacaabaaca";

        test(expected, sequence);
    }

    private void test(Character expected, String sequence) {
        assertEquals(expected, FindMajorityElement.majoritySearch(Arrays.asList(sequence).iterator()));
    }

}