Add tests for making crypto keys

src/PassportServiceProvider.php

@@ -7,13 +7,13 @@
 use Illuminate\Auth\Events\Logout;
 use Illuminate\Support\Facades\Auth;
 use Illuminate\Support\Facades\Event;
-use Illuminate\Support\Facades\Config;
 use Illuminate\Support\Facades\Cookie;
 use Illuminate\Support\Facades\Request;
 use Illuminate\Support\ServiceProvider;
 use Laravel\Passport\Guards\TokenGuard;
 use League\OAuth2\Server\CryptKey;
 use League\OAuth2\Server\ResourceServer;
+use Illuminate\Config\Repository as Config;
 use League\OAuth2\Server\AuthorizationServer;
 use League\OAuth2\Server\Grant\AuthCodeGrant;
 use League\OAuth2\Server\Grant\ImplicitGrant;
@@ -231,8 +231,11 @@ protected function registerResourceServer()
      */
     protected function makeCryptKey($type)
     {
-        $key = Config::get('passport.'.$type.'_key') ?? 'file://'.Passport::keyPath('oauth-'.$type.'.key');
-        $key = str_replace('\\n', "\n", $key);
+        $key = str_replace('\\n', "\n", $this->app->make(Config::class)->get('passport.'.$type.'_key'));
+
+        if (!$key) {
+            $key = 'file://'.Passport::keyPath('oauth-'.$type.'.key');
+        }
 
         return new CryptKey($key, null, false);
     }

tests/PassportServiceProviderTest.php

@@ -0,0 +1,63 @@
+<?php
+
+use Laravel\Passport\Passport;
+use PHPUnit\Framework\TestCase;
+use Illuminate\Config\Repository as Config;
+use Laravel\Passport\PassportServiceProvider;
+use Illuminate\Contracts\Foundation\Application as App;
+
+class PassportServiceProviderTest extends TestCase
+{
+    public function test_can_use_crypto_keys_from_config()
+    {
+        $config = Mockery::mock(Config::class, function ($config) {
+            $config->shouldReceive('get')
+                ->with('passport.private_key')
+                ->andReturn('-----BEGIN RSA PRIVATE KEY-----\nconfig\n-----END RSA PRIVATE KEY-----');
+        });
+
+        $provider = new PassportServiceProvider(
+            Mockery::mock(App::class, ['make' => $config])
+        );
+
+        // Call protected makeCryptKey method
+        $cryptKey = (function () {
+            return $this->makeCryptKey('private');
+        })->call($provider);
+
+        $this->assertSame(
+            "-----BEGIN RSA PRIVATE KEY-----\nconfig\n-----END RSA PRIVATE KEY-----",
+            file_get_contents($cryptKey->getKeyPath())
+        );
+    }
+
+    public function test_can_use_crypto_keys_from_local_disk()
+    {
+        Passport::loadKeysFrom(__DIR__.'/files');
+
+        file_put_contents(
+            __DIR__.'/files/oauth-private.key',
+            "-----BEGIN RSA PRIVATE KEY-----\ndisk\n-----END RSA PRIVATE KEY-----"
+        );
+
+        $config = Mockery::mock(Config::class, function ($config) {
+            $config->shouldReceive('get')->with('passport.private_key')->andReturn(null);
+        });
+
+        $provider = new PassportServiceProvider(
+            Mockery::mock(App::class, ['make' => $config])
+        );
+
+        // Call protected makeCryptKey method
+        $cryptKey = (function () {
+            return $this->makeCryptKey('private');
+        })->call($provider);
+
+        $this->assertSame(
+            "-----BEGIN RSA PRIVATE KEY-----\ndisk\n-----END RSA PRIVATE KEY-----",
+            file_get_contents($cryptKey->getKeyPath())
+        );
+
+        @unlink(__DIR__.'/files/oauth-private.key');
+    }
+}