<?php

declare(strict_types=1);

namespace Tests\Unit\Domain\Models\ValueObjects\Stock;

use Domain\Models\ValueObjects\Stock\StockAmount;

covers(StockAmount::class);

describe('stock amount', function (): void {
    beforeEach(function (): void {
        $this->value         = 10;
        $this->zeroValue     = 0;
        $this->negativeValue = -1;
    });

    it('creates a valid stock amount', function (): void {
        // GIVEN / WHEN
        $amount = new StockAmount(
            $this->value
        );

        // THEN
        expect($amount)->toBeInstanceOf(StockAmount::class)
            ->and($amount->value)->toBe($this->value);
    });

    it('accepts a zero value', function (): void {
        // GIVEN / WHEN
        $amount = new StockAmount(
            $this->zeroValue
        );

        // THEN
        expect($amount->value)->toBe($this->zeroValue);
    });

    it('rejects a negative value', function (): void {
        // GIVEN / WHEN
        $action = fn (): StockAmount => new StockAmount(
            $this->negativeValue
        );

        // THEN
        expect($action)->toThrow(\DomainException::class, 'Stock Amount should be positive.');
    });
});