DotsAndBoxesGridTest.java

package dotsandboxes;

import org.junit.jupiter.api.*;
import static org.junit.jupiter.api.Assertions.*;
import static org.junit.jupiter.api.Assumptions.*;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

public class DotsAndBoxesGridTest {
    /*
     * Because Test classes are classes, they can have fields, and can have static fields.
     * This field is a logger. Loggers are like a more advanced println, for writing messages out to the console or a log file.
     */
    private static final Logger logger = LogManager.getLogger(DotsAndBoxesGridTest.class);

    /*
     * Tests are functions that have an @Test annotation before them.
     * The typical format of a test is that it contains some code that does something, and then one
     * or more assertions to check that a condition holds.
     *
     * This is a dummy test just to show that the test suite itself runs
     */
    @Test
    public void testTestSuiteRuns() {
        logger.info("Dummy test to show the test suite runs");
        assertTrue(true);
    }

    // FIXME: You need to write tests for the two known bugs in the code.
    @Test
    public void testBoxCompletionDetection() {
        DotsAndBoxesGrid grid = new DotsAndBoxesGrid(4, 3, 2);
        
        / Draw only three sides of a box (not completing it)
        grid.drawHorizontal(0, 0, 1); // Top
        grid.drawVertical(0, 0, 1);   // Left
        grid.drawHorizontal(0, 1, 1); // Bottom
        
        // Check if the box at (0, 0) is incorrectly identified as completed
        assertTrue(grid.boxComplete(0, 0), "The box should not be completed.");
    }

    @Test
    public void testBoxComplete() {
        // Draw lines around a box and check if it's completed
        game.drawHorizontal(0, 0, 1); // Top horizontal line
        game.drawVertical(0, 0, 1); // Left vertical line
        game.drawHorizontal(0, 1, 1); // Bottom horizontal line
        game.drawVertical(1, 0, 1); // Right vertical line

        assertTrue("Box should be completed", game.boxComplete(0, 0));
    }

    @Test(expected = IllegalStateException.class)
    public void testDrawHorizontalLineAlreadyDrawn() {
        game.drawHorizontal(0, 0, 1);
        game.drawHorizontal(0, 0, 1); // Drawing the same line should throw an exception
    }

    @Test(expected = IllegalStateException.class)
    public void testDrawVerticalLineAlreadyDrawn() {
        game.drawVertical(0, 0, 1);
        game.drawVertical(0, 0, 1); // Drawing the same line should throw an exception
    }
}