package com.projectsacrifice.game;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;

import org.junit.Test;

public final class GameMathTest {
    @Test
    public void intersectionTreatsTouchingEdgesAsNonOverlap() {
        assertFalse(GameMath.intersects(0, 0, 10, 10, 10, 0, 10, 10));
        assertTrue(GameMath.intersects(0, 0, 10, 10, 9.9f, 0, 10, 10));
    }

    @Test
    public void pingPongIsDeterministicAndBounded() {
        assertEquals(0f, GameMath.pingPong(0f, 4f), 0.0001f);
        assertEquals(1f, GameMath.pingPong(2f, 4f), 0.0001f);
        assertEquals(0f, GameMath.pingPong(4f, 4f), 0.0001f);
        for (int i = 0; i < 100; i++) {
            float value = GameMath.pingPong(i * 0.13f, 3.7f);
            assertTrue(value >= 0f && value <= 1f);
        }
    }

    @Test
    public void timeFormattingIsStable() {
        assertEquals("00:00", GameMath.formatTime(999));
        assertEquals("01:05", GameMath.formatTime(65_000));
    }
}