No main method error when using @Test

Question

import org.junit.Test;
import static org.junit.Assert.*;

public class TestPalindrome {
    // You must use this palindrome, and not instantiate
    // new Palindromes, or the autograder might be upset.
    static Palindrome palindrome = new Palindrome();

    @Test
    public void testWordToDeque() {
        Deque d = palindrome.wordToDeque("persiflage");
        String actual = "";
        for (int i = 0; i < "persiflage".length(); i++) {
            actual += d.removeFirst();
        }
        assertEquals("persiflage", actual);
    } 
}

public class Palindrome{

    public Deque<Character> wordToDeque(String word){
        ArrayDeque<Character> c = new ArrayDeque(); 
        for (char d : word.toCharArray()){
            c.addLast(d);
        }

        return c; 
    }
}

The method wordToDeque can technically have anything in it (e.g. return null), but it still just gives me "no main error found." it's a little bit perplexing. The compiler recognizes junit as I've added it to my environment variables. Does anyone know why this is happening?

it still just gives me "no main error found." when you do what? — Jens Schauder, Aug 27 '18 at 09:02
You should run TestPalindrome using "Run as Test" or equivalent in your ide. Running a test is not like running an executable class. — spi, Aug 27 '18 at 09:04
@spi do you know how to do that as a command in git bash? I'm not using an ide. — Makdessi, Aug 27 '18 at 09:06

score 0 · Answer 1 · answered Aug 27 '18 at 09:10

0

If you are using some build system like maven/gradle, running test goal should run your tests.
If you are compiling using javac, you can use JUnit console launcher. See JUnit site for more details.

answered Aug 27 '18 at 09:10

Dakshinamurthy Karra

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No main method error when using @Test

1 Answers1