PHPUnit

BattleTest.php

<?php

namespace tests;

class BattleTest extends \PHPUnit_Framework_TestCase
{
    public function testMethods()
    {
        $this->assertEquals('1', 1);     // true
        $this->assertLessThan('1', 0);   // true
        $this->assertLessThan(-1, null); // true
        $this->assertSame('1', 1);       // false
    }
}