[Agent][Firecrawl] Use $this for assertions in tests

Switch from self::assert* to $this->assert* to follow the project's
testing conventions.

Author: OskarStark

src/agent/src/Bridge/Firecrawl/Tests/FirecrawlTest.php

@@ -28,10 +28,10 @@ public function testScrape()
 
         $scrapingResult = $firecrawl->scrape('https://www.symfony.com');
 
-        self::assertSame('https://www.symfony.com', $scrapingResult['url']);
-        self::assertNotEmpty($scrapingResult['markdown']);
-        self::assertNotEmpty($scrapingResult['html']);
-        self::assertSame(1, $httpClient->getRequestsCount());
+        $this->assertSame('https://www.symfony.com', $scrapingResult['url']);
+        $this->assertNotEmpty($scrapingResult['markdown']);
+        $this->assertNotEmpty($scrapingResult['html']);
+        $this->assertSame(1, $httpClient->getRequestsCount());
     }
 
     public function testCrawl()
@@ -47,14 +47,14 @@ public function testCrawl()
 
         $scrapingResult = $firecrawl->crawl('https://www.symfony.com');
 
-        self::assertCount(1, $scrapingResult);
-        self::assertNotEmpty($scrapingResult[0]);
+        $this->assertCount(1, $scrapingResult);
+        $this->assertNotEmpty($scrapingResult[0]);
 
         $firstItem = $scrapingResult[0];
-        self::assertSame('https://www.symfony.com', $firstItem['url']);
-        self::assertNotEmpty($firstItem['markdown']);
-        self::assertNotEmpty($firstItem['html']);
-        self::assertSame(4, $httpClient->getRequestsCount());
+        $this->assertSame('https://www.symfony.com', $firstItem['url']);
+        $this->assertNotEmpty($firstItem['markdown']);
+        $this->assertNotEmpty($firstItem['html']);
+        $this->assertSame(4, $httpClient->getRequestsCount());
     }
 
     public function testMap()
@@ -67,8 +67,8 @@ public function testMap()
 
         $mapping = $firecrawl->map('https://www.symfony.com');
 
-        self::assertSame('https://www.symfony.com', $mapping['url']);
-        self::assertCount(5, $mapping['links']);
-        self::assertSame(1, $httpClient->getRequestsCount());
+        $this->assertSame('https://www.symfony.com', $mapping['url']);
+        $this->assertCount(5, $mapping['links']);
+        $this->assertSame(1, $httpClient->getRequestsCount());
     }
 }