How to get Lumen response content as string?

What I'm trying is to get the response content as string from an unit test with Lumen response:

```php
class MovieQueryTest extends TestCase
{
use DatabaseMigrations;

public function testCanSearch()
{
Movie::create([
'name' => 'Fast & Furious 8',
'alias' => 'Fast and Furious 8',
'year' => 2016
]);

$response = $this->post('/graphql', [
'query' => '{movies(search: "Fast & Furious"){data{name}}}'
]);

$response->getContent(); // Error: Call to undefined method MovieQueryTest::getContent()
$response->getOriginalContent(); // Error: Call to undefined method MovieQueryTest::getOriginalContent()
$response->content; // ErrorException: Undefined property: MovieQueryTest::$content
}
}
```

But I'm unable to figure out how to get the response content.

I don't want to use the Lumen `TestCase->seeJson()` method.

I just need to get the response content.

The `$response` also contains a `response` field on which you need to call `getContent()`, therefore you first need to extract that and then call `getContent()`, so in your code this would become:


public function testCanSearch()
{
Movie::create([
'name' => 'Fast & Furious 8',
'alias' => 'Fast and Furious 8',
'year' => 2016
]);

$response = $this->post('/graphql', [
'query' => '{movies(search: "Fast & Furious"){data{name}}}'
]);

$extractedResponse = $response->response; // Extract the response object
$responseContent = $extractedResponse->getContent(); // Extract the content from the response object

$responseContent = $response->response->getContent(); // Alternative one-liner

}