Tenancy Fake basic logic added

src/Facades/Tenancy.php

@@ -12,4 +12,9 @@ class Tenancy extends Facade
     {
         return \Stancl\Tenancy\Tenancy::class;
     }
+
+    public static function fake()
+    {
+        static::swap(new TenancyFake);
+    }
 }

src/Facades/TenancyFake.php

@@ -0,0 +1,46 @@
+<?php
+
+namespace Stancl\Tenancy\Facades;
+
+use Stancl\Tenancy\Database\Models\Tenant;
+use Stancl\Tenancy\Tenancy;
+
+class TenancyFake extends Tenancy
+{
+    public function initialize($tenant): void
+    {
+        if (!is_object($tenant)) {
+            $tenantId = $tenant;
+            $tenant = $this->find($tenantId);
+        }
+
+        if ($this->initialized && $this->tenant->id === $tenant->id) {
+            return;
+        }
+
+        // TODO: Remove this (so that runForMultiple() is still performant) and make the FS bootstrapper work either way
+        if ($this->initialized) {
+            $this->end();
+        }
+
+        $this->tenant = $tenant;
+
+        $this->initialized = true;
+    }
+
+    public function end(): void
+    {
+        if (!$this->initialized) {
+            return;
+        }
+
+        $this->initialized = false;
+
+        $this->tenant = null;
+    }
+
+    public function find($id): ?Tenant
+    {
+        return new Tenant(['id' => $id]);
+    }
+}