WP-LIT-MCP/tests/Unit/Integrations/WordPress/Menus/MenuCreateAbilityTest.php

<?php

declare(strict_types=1);

namespace LIT\MCP\Tests\Unit\Integrations\WordPress\Menus;

use Brain\Monkey\Functions;
use LIT\MCP\Integrations\WordPress\Menus\MenuCreateAbility;
use LIT\MCP\Tests\Support\FakeChangeLog;
use LIT\MCP\Tests\Unit\TestCase;
use WP_Error;

final class MenuCreateAbilityTest extends TestCase
{
    public function testUnknownLocationIsRejectedBeforeCreating(): void
    {
        Functions\when('get_registered_nav_menus')->justReturn(['primary-menu' => 'Hauptmenü']);
        Functions\expect('wp_create_nav_menu')->never();

        $ability = new MenuCreateAbility(FakeChangeLog::forbidden());
        $result = $ability->execute(['name' => 'Neu', 'location' => 'nope']);

        self::assertToolError($result, 'validation_failed');
        self::assertStringContainsString('primary-menu', $result->get_error_message());
    }

    public function testExistingNameIsAValidationError(): void
    {
        Functions\when('wp_create_nav_menu')->justReturn(
            new WP_Error('menu_exists', 'Der Menüname existiert bereits.')
        );

        $result = (new MenuCreateAbility(FakeChangeLog::forbidden()))->execute(['name' => 'Hauptmenü']);

        self::assertToolError($result, 'validation_failed');
    }

    public function testCreatesAndAssignsTheLocation(): void
    {
        Functions\when('get_registered_nav_menus')->justReturn(['primary-menu' => 'Hauptmenü']);
        Functions\expect('wp_create_nav_menu')->once()->with('Neu')->andReturn(8);
        Functions\when('get_nav_menu_locations')->justReturn(['footer-menu' => 2]);
        Functions\expect('set_theme_mod')->once()->with(
            'nav_menu_locations',
            ['footer-menu' => 2, 'primary-menu' => 8]
        );
        Functions\expect('wp_get_nav_menu_items')->once()->with(8)->andReturn([]);
        $log = new FakeChangeLog(5);

        $result = (new MenuCreateAbility($log))->execute(['name' => 'Neu', 'location' => 'primary-menu']);

        self::assertSame(8, $result['menu_id']);
        // Trial: the first lit/menu-set-items needs no lit/menu-get just for the lock.
        self::assertSame(\LIT\MCP\Abilities\Rev::ofMenu([]), $result['menu_rev']);
        self::assertContains('menu_rev', (new MenuCreateAbility($log))->outputSchema()['required']);
        self::assertSame('created', $result['changed'][0]['action']);
        self::assertSame(5, $result['log_id']);
        $log->assertRecorded([
            'ability' => 'lit/menu-create',
            'object_type' => 'nav_menu',
            'object_id' => '8',
            'summary' => 'Menü "Neu" angelegt (Position primary-menu)',
        ]);
    }

    public function testPermissionNeedsThemeOptionRights(): void
    {
        Functions\when('current_user_can')->justReturn(false);

        $ability = new MenuCreateAbility(FakeChangeLog::forbidden());

        self::assertToolError($ability->permission(['name' => 'Neu']), 'forbidden');
    }
}