Assert Published | Laravel Kafka              

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- - [ Introduction ](/docs/v3.0/introduction)
    - [ Requirements ](/docs/v3.0/requirements)
    - [ Installation and Setup ](/docs/v3.0/installation-and-setup)
    - [ Questions and issues ](/docs/v3.0/questions-and-issues)
    - [ Changelog ](/docs/v3.0/changelog)
    - [ Upgrade guide ](/docs/v3.0/upgrade-guide)
    - [ Example docker-compose file ](/docs/v3.0/example-docker-compose)
- Producing messages
    ------------------

    - [ Producing messages ](/docs/v3.0/producing-messages/producing-messages)
    - [ Configuring your kafka producer ](/docs/v3.0/producing-messages/configuring-producers)
    - [ Configuring message payload ](/docs/v3.0/producing-messages/configuring-message-payload)
    - [ Custom serializers ](/docs/v3.0/producing-messages/custom-serializers)
    - [ Publishing to kafka ](/docs/v3.0/producing-messages/publishing-to-kafka)
- Consuming messages
    ------------------

    - [ Creating a kafka consumer ](/docs/v3.0/consuming-messages/creating-consumer)
    - [ Subscribing to kafka topics ](/docs/v3.0/consuming-messages/subscribing-to-kafka-topics)
    - [ Using regex to subscribe to kafka topics ](/docs/v3.0/consuming-messages/using-regex-to-subscribe-to-kafka-topics)
    - [ Assigning consumers to a topic partition ](/docs/v3.0/consuming-messages/assigning-partitions)
    - [ Consuming messages from specific offsets ](/docs/v3.0/consuming-messages/consuming-from-specific-offsets)
    - [ Consumer groups ](/docs/v3.0/consuming-messages/consumer-groups)
    - [ Partition Discovery and Dynamic Assignment ](/docs/v3.0/consuming-messages/partition-discovery)
    - [ Message handlers ](/docs/v3.0/consuming-messages/message-handlers)
    - [ Configuring consumer options ](/docs/v3.0/consuming-messages/configuring-consumer-options)
    - [ Handling failed messages ](/docs/v3.0/consuming-messages/handling-failed-messages)
    - [ Custom deserializers ](/docs/v3.0/consuming-messages/custom-deserializers)
    - [ Consuming messages ](/docs/v3.0/consuming-messages/consuming-messages)
    - [ Pausing partitions ](/docs/v3.0/consuming-messages/pausing-partitions)
    - [ Consumer classes ](/docs/v3.0/consuming-messages/class-structure)
    - [ Using consumers with Laravel Telescope ](/docs/v3.0/consuming-messages/laravel-telescope)
- Advanced usage
    --------------

    - [ Connections ](/docs/v3.0/advanced-usage/connections)
    - [ Replacing the default serializer/deserializer ](/docs/v3.0/advanced-usage/replacing-default-serializer)
    - [ Graceful shutdown ](/docs/v3.0/advanced-usage/graceful-shutdown)
    - [ Running consumers in production ](/docs/v3.0/advanced-usage/running-consumers-in-production)
    - [ SASL Authentication ](/docs/v3.0/advanced-usage/sasl-authentication)
    - [ Custom Committers ](/docs/v3.0/advanced-usage/custom-committers)
    - [ Manual Commit ](/docs/v3.0/advanced-usage/manual-commit)
    - [ Middlewares ](/docs/v3.0/advanced-usage/middlewares)
    - [ Stop consumer when there are no messages left ](/docs/v3.0/advanced-usage/stop-consumer-after-last-message)
    - [ Stop consumer on demand ](/docs/v3.0/advanced-usage/stopping-a-consumer)
    - [ Writing custom loggers ](/docs/v3.0/advanced-usage/custom-loggers)
    - [ Before and after callbacks ](/docs/v3.0/advanced-usage/before-callbacks)
    - [ Setting global configurations ](/docs/v3.0/advanced-usage/setting-global-configuration)
    - [ Sending multiple messages with the same producer ](/docs/v3.0/advanced-usage/sending-multiple-messages-with-the-same-producer)
    - [ Events ](/docs/v3.0/advanced-usage/events)
    - [ Consumer lag ](/docs/v3.0/advanced-usage/consumer-lag)
- Testing
    -------

    - [ Kafka fake ](/docs/v3.0/testing/fake)
    - [ Assert Published ](/docs/v3.0/testing/assert-published)
    - [ Assert published On ](/docs/v3.0/testing/assert-published-on)
    - [ Assert not published ](/docs/v3.0/testing/assert-not-published)
    - [ Assert nothing published ](/docs/v3.0/testing/assert-nothing-published)
    - [ Assert published times ](/docs/v3.0/testing/assert-published-times)
    - [ Assert published on times ](/docs/v3.0/testing/assert-published-on-times)
    - [ Mocking your kafka consumer ](/docs/v3.0/testing/mocking-your-kafka-consumer)

  Assert Published 
==================

When you want to assert that a message was published into kafka, you can make use of the `assertPublished` method:

         ```
use Junges\Kafka\Facades\Kafka;
use Tests\TestCase;

class MyTest extends TestCase
{
     public function testMyAwesomeApp()
     {
         Kafka::fake();

         $producer = Kafka::publish('topic')
             ->withHeaders(['key' => 'value'])
             ->withBody(['foo' => 'bar']);

         $producer->send();

         Kafka::assertPublished($producer->getMessage());       
     }
}
```

You can also use `assertPublished` without passing the message argument:

         ```
use Junges\Kafka\Facades\Kafka;
use Tests\TestCase;

class MyTest extends TestCase
{
     public function testMyAwesomeApp()
     {
         Kafka::fake();

         Kafka::publish('topic')
             ->withHeaders(['key' => 'value'])
             ->withBody(['foo' => 'bar'])
             ->send();

         Kafka::assertPublished();       
     }
}
```

To check the published message yourself, pass a callback receiving each published message and returning whether it matches:

         ```
use Junges\Kafka\Contracts\ProducerMessage;

Kafka::assertPublished(function (ProducerMessage $message) {
    return $message->getBody()['foo'] === 'bar';
});
```

When you pass both an expected message and a callback, a published message must match both.

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