fedi-feed-router/backend/tests/Unit/Services/ArticleFetcherTest.php

<?php

namespace Tests\Unit\Services;

use App\Services\Article\ArticleFetcher;
use App\Models\Feed;
use App\Models\Article;
use App\Services\Http\HttpFetcher;
use App\Services\Factories\HomepageParserFactory;
use App\Services\Factories\ArticleParserFactory;
use App\Services\Log\LogSaver;
use Tests\TestCase;
use Illuminate\Foundation\Testing\RefreshDatabase;
use Mockery;

class ArticleFetcherTest extends TestCase
{
    use RefreshDatabase;

    public function test_get_articles_from_feed_returns_collection(): void
    {
        $feed = Feed::factory()->create([
            'type' => 'rss',
            'url' => 'https://example.com/feed.rss'
        ]);

        $result = ArticleFetcher::getArticlesFromFeed($feed);
        
        $this->assertInstanceOf(\Illuminate\Support\Collection::class, $result);
    }

    public function test_get_articles_from_rss_feed_returns_empty_collection(): void
    {
        $feed = Feed::factory()->create([
            'type' => 'rss',
            'url' => 'https://example.com/feed.rss'
        ]);

        $result = ArticleFetcher::getArticlesFromFeed($feed);
        
        // RSS parsing is not implemented yet, should return empty collection
        $this->assertEmpty($result);
    }

    public function test_get_articles_from_website_feed_handles_no_parser(): void
    {
        $feed = Feed::factory()->create([
            'type' => 'website',
            'url' => 'https://unsupported-site.com/'
        ]);

        $result = ArticleFetcher::getArticlesFromFeed($feed);
        
        // Should return empty collection when no parser is available
        $this->assertInstanceOf(\Illuminate\Support\Collection::class, $result);
        $this->assertEmpty($result);
    }

    public function test_get_articles_from_unsupported_feed_type(): void
    {
        $feed = Feed::factory()->create([
            'type' => 'website', // Use valid type but with unsupported URL
            'url' => 'https://unsupported-feed-type.com/feed'
        ]);

        $result = ArticleFetcher::getArticlesFromFeed($feed);
        
        $this->assertInstanceOf(\Illuminate\Support\Collection::class, $result);
        $this->assertEmpty($result);
    }

    public function test_fetch_article_data_returns_array(): void
    {
        $article = Article::factory()->create([
            'url' => 'https://example.com/article'
        ]);

        $result = ArticleFetcher::fetchArticleData($article);
        
        $this->assertIsArray($result);
        // Will be empty array due to unsupported URL in test
        $this->assertEmpty($result);
    }

    public function test_fetch_article_data_handles_invalid_url(): void
    {
        $article = Article::factory()->create([
            'url' => 'invalid-url'
        ]);

        $result = ArticleFetcher::fetchArticleData($article);
        
        $this->assertIsArray($result);
        $this->assertEmpty($result);
    }

    public function test_get_articles_from_feed_with_null_feed_type(): void
    {
        // Create feed with valid type first, then manually set to invalid value
        $feed = Feed::factory()->create([
            'type' => 'website',
            'url' => 'https://example.com/feed'
        ]);
        
        // Use reflection to set an invalid type that bypasses enum validation
        $reflection = new \ReflectionClass($feed);
        $property = $reflection->getProperty('attributes');
        $property->setAccessible(true);
        $attributes = $property->getValue($feed);
        $attributes['type'] = 'invalid_type';
        $property->setValue($feed, $attributes);

        $result = ArticleFetcher::getArticlesFromFeed($feed);
        
        $this->assertInstanceOf(\Illuminate\Support\Collection::class, $result);
        $this->assertEmpty($result);
    }

    public function test_get_articles_from_website_feed_with_supported_parser(): void
    {
        $feed = Feed::factory()->create([
            'type' => 'website',
            'url' => 'https://www.vrt.be/vrtnws/nl/'
        ]);

        // Test actual behavior - VRT parser should be available
        $result = ArticleFetcher::getArticlesFromFeed($feed);
        
        $this->assertInstanceOf(\Illuminate\Support\Collection::class, $result);
        // Result might be empty due to HTTP call failure in test environment, but should not error
    }

    public function test_get_articles_from_website_feed_handles_invalid_url(): void
    {
        $feed = Feed::factory()->create([
            'type' => 'website',
            'url' => 'https://invalid-domain-that-does-not-exist-12345.com/'
        ]);

        $result = ArticleFetcher::getArticlesFromFeed($feed);
        
        $this->assertInstanceOf(\Illuminate\Support\Collection::class, $result);
        $this->assertEmpty($result);
    }

    public function test_fetch_article_data_with_supported_parser(): void
    {
        $article = Article::factory()->create([
            'url' => 'https://www.vrt.be/vrtnws/nl/test-article'
        ]);

        // Test actual behavior - VRT parser should be available
        $result = ArticleFetcher::fetchArticleData($article);
        
        $this->assertIsArray($result);
        // Result might be empty due to HTTP call failure in test environment, but should not error
    }

    public function test_fetch_article_data_handles_unsupported_domain(): void
    {
        $article = Article::factory()->create([
            'url' => 'https://unsupported-domain.com/article'
        ]);

        $result = ArticleFetcher::fetchArticleData($article);
        
        $this->assertIsArray($result);
        $this->assertEmpty($result);
    }

    public function test_save_article_creates_new_article_when_not_exists(): void
    {
        $feed = Feed::factory()->create();
        $url = 'https://example.com/unique-article';
        
        // Ensure article doesn't exist
        $this->assertDatabaseMissing('articles', ['url' => $url]);
        
        // Use reflection to access private method for testing
        $reflection = new \ReflectionClass(ArticleFetcher::class);
        $saveArticleMethod = $reflection->getMethod('saveArticle');
        $saveArticleMethod->setAccessible(true);
        
        $article = $saveArticleMethod->invoke(null, $url, $feed->id);
        
        $this->assertInstanceOf(Article::class, $article);
        $this->assertEquals($url, $article->url);
        $this->assertEquals($feed->id, $article->feed_id);
        $this->assertDatabaseHas('articles', ['url' => $url, 'feed_id' => $feed->id]);
    }

    public function test_save_article_returns_existing_article_when_exists(): void
    {
        $feed = Feed::factory()->create();
        $existingArticle = Article::factory()->create([
            'url' => 'https://example.com/existing-article',
            'feed_id' => $feed->id
        ]);
        
        // Use reflection to access private method for testing
        $reflection = new \ReflectionClass(ArticleFetcher::class);
        $saveArticleMethod = $reflection->getMethod('saveArticle');
        $saveArticleMethod->setAccessible(true);
        
        $article = $saveArticleMethod->invoke(null, $existingArticle->url, $feed->id);
        
        $this->assertEquals($existingArticle->id, $article->id);
        $this->assertEquals($existingArticle->url, $article->url);
        
        // Ensure no duplicate was created
        $this->assertEquals(1, Article::where('url', $existingArticle->url)->count());
    }

    public function test_save_article_without_feed_id(): void
    {
        $url = 'https://example.com/article-without-feed';
        
        // Use reflection to access private method for testing
        $reflection = new \ReflectionClass(ArticleFetcher::class);
        $saveArticleMethod = $reflection->getMethod('saveArticle');
        $saveArticleMethod->setAccessible(true);
        
        $article = $saveArticleMethod->invoke(null, $url, null);
        
        $this->assertInstanceOf(Article::class, $article);
        $this->assertEquals($url, $article->url);
        $this->assertNull($article->feed_id);
        $this->assertDatabaseHas('articles', ['url' => $url, 'feed_id' => null]);
    }

    protected function tearDown(): void
    {
        Mockery::close();
        parent::tearDown();
    }
}