JUnit 测试失败，不知道为什么

Question

I'm pretty new to writing code and I am not the best, but I don't understand why my code isn't passing one of the JUnit tests I have set up.

public class PA3Test {


public static void main(String[] args) { 
}

public static int countMajority(int count0, int count1, int count2) {
    int allVotes = (count0 + count1 + count2);
    int halfVotes = (allVotes / 2);
    int winner = 999;
    if (count0 >= halfVotes) {
        winner = 0;
    } else {
        winner = -1;
    }
    if (count1 >= halfVotes) {
        winner = 1;
    } else {
        winner = -1;
    }
    return winner;

}

The test looks like this:

import junit.framework.TestCase;

public class PA3TestTest extends TestCase {

public static void testCountMajority() {
    assertEquals("0th param should win:", 0,
                 PA3Test.countMajority(100, 50, 40));
     assertEquals("1st param should win:", 1,
                 PA3Test.countMajority(50, 100, 40));
}   

It is supposed to be returning 0 but it is returning -1. Any help is appreciated.

Answer 1

In your first test,
allVotes=190
halfVotes=95
count0 = 100 > 95, winner = 0
count1 = 50 < 95,

---

Try below and find out what you are doing wrong.

 public static int countMajority(int count0, int count1, int count2) { int allVotes = (count0 + count1 + count2); int halfVotes = (allVotes / 2); int winner = -1; if (count0 >= halfVotes) { winner = 0; } else if (count1 >= halfVotes) { winner = 1; } return winner; }

Answer 2

Not sure why you are averaging it by 2 when you are having 3 counts. But based on your problem statement this should do the trick.

public static int countMajority(int count0, int count1, int count2) {
    int allVotes = (count0 + count1 + count2);
    int halfVotes = (allVotes / 2);
    int winner = -1;
    if (count0 >= halfVotes) {
        winner = 0;
    }
    if (count1 >= halfVotes && count1  > count0) {
        winner = 1;
    }

    return winner;
}