fedi-feed-router/backend/tests/Unit/Http/Middleware/HandleAppearanceTest.php

<?php

namespace Tests\Unit\Http\Middleware;

use App\Http\Middleware\HandleAppearance;
use Illuminate\Http\Request;
use Illuminate\Http\Response;
use Illuminate\Support\Facades\View;
use Tests\TestCase;

class HandleAppearanceTest extends TestCase
{
    protected HandleAppearance $middleware;

    protected function setUp(): void
    {
        parent::setUp();
        $this->middleware = new HandleAppearance();
    }

    public function test_handle_shares_appearance_from_cookie(): void
    {
        View::shouldReceive('share')
            ->once()
            ->with('appearance', 'dark');

        $request = Request::create('/test');
        $request->cookies->set('appearance', 'dark');

        $next = function ($request) {
            return new Response();
        };

        $response = $this->middleware->handle($request, $next);

        $this->assertInstanceOf(Response::class, $response);
    }

    public function test_handle_uses_system_as_default_when_no_cookie(): void
    {
        View::shouldReceive('share')
            ->once()
            ->with('appearance', 'system');

        $request = Request::create('/test');

        $next = function ($request) {
            return new Response();
        };

        $response = $this->middleware->handle($request, $next);

        $this->assertInstanceOf(Response::class, $response);
    }

    public function test_handle_shares_light_appearance(): void
    {
        View::shouldReceive('share')
            ->once()
            ->with('appearance', 'light');

        $request = Request::create('/test');
        $request->cookies->set('appearance', 'light');

        $next = function ($request) {
            return new Response();
        };

        $response = $this->middleware->handle($request, $next);

        $this->assertInstanceOf(Response::class, $response);
    }

    public function test_handle_passes_request_to_next_middleware(): void
    {
        View::shouldReceive('share')
            ->once()
            ->with('appearance', 'system');

        $request = Request::create('/test');
        $expectedResponse = new Response('Test content', 200);

        $next = function ($passedRequest) use ($request, $expectedResponse) {
            $this->assertSame($request, $passedRequest);
            return $expectedResponse;
        };

        $response = $this->middleware->handle($request, $next);

        $this->assertSame($expectedResponse, $response);
    }

    public function test_handle_with_custom_appearance_value(): void
    {
        View::shouldReceive('share')
            ->once()
            ->with('appearance', 'custom-theme');

        $request = Request::create('/test');
        $request->cookies->set('appearance', 'custom-theme');

        $next = function ($request) {
            return new Response();
        };

        $response = $this->middleware->handle($request, $next);

        $this->assertInstanceOf(Response::class, $response);
    }

    public function test_handle_with_empty_cookie_value(): void
    {
        View::shouldReceive('share')
            ->once()
            ->with('appearance', '');

        $request = Request::create('/test');
        $request->cookies->set('appearance', '');

        $next = function ($request) {
            return new Response();
        };

        $response = $this->middleware->handle($request, $next);

        $this->assertInstanceOf(Response::class, $response);
    }

    public function test_handle_preserves_response_status_and_headers(): void
    {
        View::shouldReceive('share')
            ->once()
            ->with('appearance', 'system');

        $request = Request::create('/test');
        $expectedHeaders = ['X-Test-Header' => 'test-value'];
        
        $next = function ($request) use ($expectedHeaders) {
            $response = new Response('Test content', 201);
            $response->headers->add($expectedHeaders);
            return $response;
        };

        $response = $this->middleware->handle($request, $next);

        $this->assertEquals(201, $response->getStatusCode());
        $this->assertEquals('Test content', $response->getContent());
        $this->assertEquals('test-value', $response->headers->get('X-Test-Header'));
    }
}