<?php
/**
 * Calculator tests.
 *
 * @package Aivexa
 */

declare(strict_types=1);

if ( ! defined( 'ABSPATH' ) ) {
	exit; // Exit if accessed directly.
}

use PHPUnit\Framework\TestCase;

require_once dirname( __DIR__ ) . '/includes/tools/class-calculator-tool.php';

final class Aivexa_Calculator_Test extends TestCase {

	public function test_percentage_of(): void {
		$result = Aivexa_Calculator_Tool::evaluate_expression( '25% of 8400' );
		$this->assertEquals( 2100.0, $result );
	}

	public function test_basic_arithmetic(): void {
		$result = Aivexa_Calculator_Tool::evaluate_expression( '(10+5)*2' );
		$this->assertEquals( 30.0, $result );
	}

	public function test_rejects_invalid_expression(): void {
		$result = Aivexa_Calculator_Tool::evaluate_expression( 'system("rm")' );
		$this->assertInstanceOf( WP_Error::class, $result );
	}
}