fix: improve guarding against missing clients

Author: innocenzi

packages/kv-store/src/Redis/MissingRedisException.php

@@ -3,7 +3,7 @@
 namespace Tempest\KeyValue\Redis;
 
 use Exception;
-use Predis\Client;
+use Predis;
 
 final class MissingRedisException extends Exception implements RedisException
 {
@@ -13,7 +13,7 @@ public function __construct(string $fqcn)
             'Redis client not found.' .
                 match ($fqcn) {
                     \Redis::class => ' You may be missing the `redis` extension.',
-                    Client::class => ' You may need to install the `predis/predis` package.',
+                    Predis\Client::class => ' You may need to install the `predis/predis` package.',
                 },
         );
     }

packages/kv-store/src/Redis/RedisInitializer.php

@@ -34,7 +34,7 @@ public function initialize(ClassReflector $class, null|string|UnitEnum $tag, Con
     private function buildPhpRedisClient(): \Redis
     {
         if (! extension_loaded('redis') || ! class_exists(\Redis::class)) {
-            throw new MissingRedisException(Redis::class);
+            throw new MissingRedisException(\Redis::class);
         }
 
         return new \Redis();

packages/kv-store/tests/PhpRedisClientTest.php

@@ -14,6 +14,10 @@ protected function setUp(): void
     {
         parent::setUp();
 
+        if (! extension_loaded('redis') || ! class_exists(\Redis::class)) {
+            $this->markTestSkipped('The `redis` extension is not loaded.');
+        }
+
         $this->redis = new PhpRedisClient(
             client: new \Redis(),
             config: new RedisConfig(

packages/kv-store/tests/PredisClientTest.php

@@ -15,6 +15,10 @@ protected function setUp(): void
     {
         parent::setUp();
 
+        if (! class_exists(Predis\Client::class)) {
+            $this->markTestSkipped('The `predis/predis` package is not installed.');
+        }
+
         $this->redis = new PredisClient(
             client: new Predis\Client(
                 parameters: array_filter([