<?php

test('that true is true', function () {
    expect(true)->toBeTrue();
    expect(true)->toBeBool();
    expect(true)->not->toBeFalse();
    expect(true)->not->toBeNull();
    expect(true)->toEqual(true);
    expect(true === true)->toBeTrue();
});

test('that false is false', function () {
    expect(false)->toBeFalse();
    expect(false)->toBeBool();
    expect(false)->not->toBeTrue();
    expect(false)->not->toBeNull();
    expect(false)->toEqual(false);
    expect(false === false)->toBeTrue();
});

test('that null is null', function () {
    expect(null)->toBeNull();
    expect(null)->not->toBeTrue();
    expect(null)->not->toBeFalse();
    expect(null === null)->toBeTrue();
});

test('basic arithmetic operations', function () {
    expect(1 + 1)->toBe(2);
    expect(2 * 2)->toBe(4);
    expect(10 - 5)->toBe(5);
    expect(8 / 2)->toBe(4);
    expect(10 % 3)->toBe(1);
});

test('string operations', function () {
    expect('hello')->toBeString();
    expect('hello')->toHaveLength(5);
    expect('hello world')->toContain('world');
    expect('hello')->not->toBeEmpty();
    expect('')->toBeEmpty();
});

test('array operations', function () {
    $array = [1, 2, 3];
    expect($array)->toBeArray();
    expect($array)->toHaveCount(3);
    expect($array)->toContain(2);
    expect($array)->not->toBeEmpty();
});