Update test environment and dev dependencies

Author: clue

README.md

@@ -1,6 +1,7 @@
 # clue/reactphp-redis
 
 [![CI status](https://github.com/clue/reactphp-redis/actions/workflows/ci.yml/badge.svg)](https://github.com/clue/reactphp-redis/actions)
+[![code coverage](https://img.shields.io/badge/code%20coverage-100%25-success)](#tests)
 [![installs on Packagist](https://img.shields.io/packagist/dt/clue/redis-react?color=blue&label=installs%20on%20Packagist)](https://packagist.org/packages/clue/redis-react)
 
 Async [Redis](https://redis.io/) client implementation, built on top of [ReactPHP](https://reactphp.org/).
@@ -496,7 +497,7 @@ Once released, this project will follow [SemVer](https://semver.org/).
 At the moment, this will install the latest development version:
 
 ```bash
-$ composer require clue/redis-react:^3@dev
+composer require clue/redis-react:^3@dev
 ```
 
 See also the [CHANGELOG](CHANGELOG.md) for details about version upgrades.
@@ -510,7 +511,7 @@ smooth upgrade path. You may target multiple versions at the same time to
 support a wider range of PHP versions like this:
 
 ```bash
-$ composer require "clue/redis-react:^3@dev || ^2"
+composer require "clue/redis-react:^3@dev || ^2"
 ```
 
 ## Tests
@@ -519,13 +520,21 @@ To run the test suite, you first need to clone this repo and then install all
 dependencies [through Composer](https://getcomposer.org/):
 
 ```bash
-$ composer install
+composer install
 ```
 
 To run the test suite, go to the project root and run:
 
 ```bash
-$ vendor/bin/phpunit
+vendor/bin/phpunit
+```
+
+The test suite is set up to always ensure 100% code coverage across all
+supported environments. If you have the Xdebug extension installed, you can also
+generate a code coverage report locally like this:
+
+```bash
+XDEBUG_MODE=coverage vendor/bin/phpunit --coverage-text
 ```
 
 The test suite contains both unit tests and functional integration tests.
@@ -535,14 +544,14 @@ and will be skipped by default.
 If you don't have access to a running Redis server, you can also use a temporary `Redis` Docker image:
 
 ```bash
-$ docker run --net=host redis
+docker run --net=host redis
 ```
 
 To now run the functional tests, you need to supply *your* login
 details in an environment variable like this:
 
 ```bash
-$ REDIS_URI=localhost:6379 vendor/bin/phpunit
+REDIS_URI=localhost:6379 vendor/bin/phpunit
 ```
 
 ## License

composer.json

@@ -21,8 +21,8 @@
     },
     "require-dev": {
         "clue/block-react": "^1.5",
-        "phpstan/phpstan": "1.9.2 || 1.4.10",
-        "phpunit/phpunit": "^9.5 || ^7.5"
+        "phpstan/phpstan": "1.10.15 || 1.4.10",
+        "phpunit/phpunit": "^9.6 || ^7.5"
     },
     "autoload": {
         "psr-4": { "Clue\\React\\Redis\\": "src/" }

phpunit.xml.dist

@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="UTF-8"?>
 
-<!-- PHPUnit configuration file with new format for PHPUnit 9.5+ -->
+<!-- PHPUnit configuration file with new format for PHPUnit 9.6+ -->
 <phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.5/phpunit.xsd"
+         xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.6/phpunit.xsd"
          bootstrap="vendor/autoload.php"
          cacheResult="false"
          colors="true"
@@ -20,7 +20,7 @@
     <php>
         <ini name="error_reporting" value="-1" />
         <!-- Evaluate assertions, requires running with "php -d zend.assertions=1 vendor/bin/phpunit" -->
-        <!-- <ini name="zend.assertions=1" value="1" /> -->
+        <!-- <ini name="zend.assertions" value="1" /> -->
         <ini name="assert.active" value="1" />
         <ini name="assert.exception" value="1" />
         <ini name="assert.bail" value="0" />

phpunit.xml.legacy

@@ -18,7 +18,7 @@
     <php>
         <ini name="error_reporting" value="-1" />
         <!-- Evaluate assertions, requires running with "php -d zend.assertions=1 vendor/bin/phpunit" -->
-        <!-- <ini name="zend.assertions=1" value="1" /> -->
+        <!-- <ini name="zend.assertions" value="1" /> -->
         <ini name="assert.active" value="1" />
         <ini name="assert.exception" value="1" />
         <ini name="assert.bail" value="0" />