feat: Add a new trait to help with testing with feature flags

Implement InteractsWithFeatureFlags trait to help with testing with feature flags

src/Providers/LaunchDarkly/LaunchDarklyProvider.php

@@ -24,6 +24,8 @@ public function __construct()
     {
         /** @var array<string,mixed> */
         $config = Config::get('feature-flags.providers.launchdarkly.options', []);
+
+        /** @var array<string,mixed> */
         $options = array_merge([
             'event_publisher' => Guzzle::eventPublisher()
         ], $config);
@@ -32,6 +34,7 @@ public function __construct()
         $key = Config::get('feature-flags.providers.launchdarkly.key');
 
         if ($key) {
+            /**  @phpstan-ignore-next-line  */
             $this->client = new LDClient($key, $options);
         }
     }

src/Traits/InteractsWithFeatureFlags.php

@@ -0,0 +1,25 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Worksome\FeatureFlags\Traits;
+
+trait InteractsWithFeatureFlags
+{
+    public function switchFeatureFlag(string $key, bool $onOff): void
+    {
+        $this->app['config']->set('feature-flags.overrides.'.$key, $onOff);
+    }
+
+    public function enableFeatureFlag(string $key): void
+    {
+
+        $this->switchFeatureFlag($key, true);
+    }
+
+    public function disableFeatureFlag(string $key): void
+    {
+
+        $this->switchFeatureFlag($key, false);
+    }
+}