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 LevelPageTest {
    @Test
    public void eighteenLevelsUseTwoBoundedTenCardPages() {
        LevelPage page = new LevelPage(18, 10);

        assertEquals(2, page.pageCount());
        assertEquals(0, page.firstIndex());
        assertEquals(10, page.endExclusive());
        assertFalse(page.hasPrevious());
        assertTrue(page.hasNext());

        page.next();
        assertEquals(10, page.firstIndex());
        assertEquals(18, page.endExclusive());
        assertTrue(page.hasPrevious());
        assertFalse(page.hasNext());

        page.next();
        assertEquals(1, page.pageIndex());
        page.selectIndex(3);
        assertEquals(0, page.pageIndex());
        page.selectIndex(15);
        assertEquals(1, page.pageIndex());
        page.selectIndex(16);
        assertEquals(1, page.pageIndex());
        page.selectIndex(17);
        assertEquals(1, page.pageIndex());
    }
}