diff --git a/src/Extend/AddonTestCase.php b/src/Extend/AddonTestCase.php
new file mode 100644
index 0000000000..fa0904f01b
--- /dev/null
+++ b/src/Extend/AddonTestCase.php
@@ -0,0 +1,78 @@
+<?php
+
+namespace Statamic\Extend;
+
+use Facades\Statamic\Version;
+use Orchestra\Testbench\TestCase as OrchestraTestCase;
+use ReflectionClass;
+use Statamic\Console\Processes\Composer;
+use Statamic\Providers\StatamicServiceProvider;
+use Statamic\Statamic;
+
+abstract class AddonTestCase extends OrchestraTestCase
+{
+    protected string $addonServiceProvider;
+
+    protected function setUp(): void
+    {
+        parent::setUp();
+
+        $this->withoutMix();
+        $this->withoutVite();
+
+        Version::shouldReceive('get')->andReturn(Composer::create(__DIR__.'/../')->installedVersion(Statamic::PACKAGE));
+        $this->addToAssertionCount(-1);
+
+        \Statamic\Facades\CP\Nav::shouldReceive('build')->zeroOrMoreTimes()->andReturn(collect());
+        $this->addToAssertionCount(-1); // Dont want to assert this
+    }
+
+    protected function getPackageProviders($app)
+    {
+        $serviceProviders = [
+            StatamicServiceProvider::class,
+            $this->addonServiceProvider,
+        ];
+
+        if (class_exists('Rebing\GraphQL\GraphQLServiceProvider')) {
+            array_unshift($serviceProviders, 'Rebing\GraphQL\GraphQLServiceProvider');
+        }
+
+        return $serviceProviders;
+    }
+
+    protected function getPackageAliases($app)
+    {
+        return [
+            'Statamic' => Statamic::class,
+        ];
+    }
+
+    protected function getEnvironmentSetUp($app)
+    {
+        parent::getEnvironmentSetUp($app);
+
+        $reflector = new ReflectionClass($this->addonServiceProvider);
+        $directory = dirname($reflector->getFileName());
+
+        $providerParts = explode('\\', $this->addonServiceProvider, -1);
+        $namespace = implode('\\', $providerParts);
+
+        $json = json_decode($app['files']->get($directory.'/../composer.json'), true);
+        $statamic = $json['extra']['statamic'] ?? [];
+        $autoload = $json['autoload']['psr-4'][$namespace.'\\'];
+
+        $app->make(Manifest::class)->manifest = [
+            $json['name'] => [
+                'id' => $json['name'],
+                'slug' => $statamic['slug'] ?? null,
+                'version' => 'dev-main',
+                'namespace' => $namespace,
+                'autoload' => $autoload,
+                'provider' => $this->addonServiceProvider,
+            ],
+        ];
+
+        $app['config']->set('statamic.users.repository', 'file');
+    }
+}