Assert the status, JSON payload, structure, and important headers explicitly: ```php $response = $this->postJson('/api/posts', ['title' => 'Hello']); $response ->assertStatus(201) ->assertHeader('Content-Type', 'application/json') ->assertJson(['data' => ['title' => 'Hello']]) ->assertJsonStructure(['data' => ['id', 'title', 'created_at']]); ``` Use `assertJsonValidationErrors()` for invalid input and assert `422` rather than only checking that the request failed. Keep assertions tied to the ...
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Assert the status, JSON payload, structure, and important headers explicitly:
```php
$response = $this->postJson('/api/posts', ['title' => 'Hello']);
$response
->assertStatus(201)
->assertHeader('Content-Type', 'application/json')
->assertJson(['data' => ['title' => 'Hello']])
->assertJsonStructure(['data' => ['id', 'title', 'created_at']]);
```
Use `assertJsonValidationErrors()` for invalid input and assert `422` rather than only checking that the request failed. Keep assertions tied to the public API resource contract, not incidental database columns, so the test protects behavior without overfitting serialization internals.
