How to run a phpunit test on redis pub/sub?

@herminia_bruen 

To run a PHPUnit test on Redis pub/sub, you'll need to use mock objects to simulate the behavior of the Redis pub/sub system. Here's a basic example of how you can set up and run a PHPUnit test for Redis pub/sub:

1. Install PHPUnit and Redis:

Make sure you have PHPUnit installed on your system. You can install it using Composer:

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composer require --dev phpunit/phpunit

You also need to have Redis installed on your system and running. You can download and install Redis from the official website.

1. Set up your test class:

Create a new PHP file for your test class. Here's a basic example of a test class for a Redis pub/sub system:

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use PHPUnitFrameworkTestCase;

class RedisPubSubTest extends TestCase
{
    public function testPublish()
    {
        // Mock Redis connection
        $redis = $this->createMock(Redis::class);
        
        // Set up expectations for the Redis commands
        $redis->expects($this->once())
            ->method('publish')
            ->with('channel', 'message')
            ->willReturn(1);
        
        // Your code that publishes a message to Redis
        $result = $redis->publish('channel', 'message');
        
        // Assert that the message was successfully published
        $this->assertEquals(1, $result);
    }
}

1. Run the test:

To run the PHPUnit test, execute the following command in your terminal:

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vendor/bin/phpunit yourTestFile.php

Replace yourTestFile with the name of the PHP file containing your test class. PHPUnit will run the test and output the results to the terminal.

This is a basic example to get you started with running PHPUnit tests on Redis pub/sub. You can expand on this example by adding more test cases for subscribing to channels, handling messages, and other Redis pub/sub functionality.