Use non-static PHPUnit assert methods

Author: javiereguiluz

http_client.rst

@@ -2225,15 +2225,15 @@ test it in a real application::
             $responseData = $service->createArticle($requestData);
 
             // Assert
-            self::assertSame('POST', $mockResponse->getRequestMethod());
-            self::assertSame('https://example.com/api/article', $mockResponse->getRequestUrl());
-            self::assertContains(
+            $this->assertSame('POST', $mockResponse->getRequestMethod());
+            $this->assertSame('https://example.com/api/article', $mockResponse->getRequestUrl());
+            $this->assertContains(
                 'Content-Type: application/json',
                 $mockResponse->getRequestOptions()['headers']
             );
-            self::assertSame($expectedRequestData, $mockResponse->getRequestOptions()['body']);
+            $this->assertSame($expectedRequestData, $mockResponse->getRequestOptions()['body']);
 
-            self::assertSame($responseData, $expectedResponseData);
+            $this->assertSame($responseData, $expectedResponseData);
         }
     }
 

testing.rst

@@ -1027,7 +1027,7 @@ Browser Assertions
         // add this method in some custom class imported in your tests
         protected static function assertMyOwnCustomAssert(): void
         {
-            self::assertThatForClient(new SomeCustomConstraint());
+            $this->assertThatForClient(new SomeCustomConstraint());
         }
 
 Crawler Assertions