Add option to override well-known URL

Author: snelg

src/BYUJWT.php

@@ -30,6 +30,7 @@ class BYUJWT
 {
     protected $client;
     protected $cache = [];
+    protected $wellKnownUrl;
 
     public $lastException;
 
@@ -52,6 +53,11 @@ public function __construct($settings = [])
         } else {
             $this->client = $settings['client'];
         }
+
+        $this->wellKnownUrl = 'https://api.byu.edu/.well-known/openid-configuration';
+        if (!empty($settings['wellKnownUrl'])) {
+            $this->wellKnownUrl = $settings['wellKnownUrl'];
+        }
     }
 
     /**
@@ -67,8 +73,7 @@ public function getWellKnown()
         }
 
         try {
-            $wellKnownUrl = 'https://api.byu.edu/.well-known/openid-configuration';
-            $response = $this->client->get($wellKnownUrl);
+            $response = $this->client->get($this->wellKnownUrl);
         } catch (RequestException $e) {
             $this->lastException = $e;
             return null;

tests/BYUJWTTest.php

@@ -105,6 +105,17 @@ public function testBadWellKnown()
         $this->assertEmpty($BYUJWT->getWellKnown());
     }
 
+    public function testBadWellKnownUrl()
+    {
+        $BYUJWT = new BYUJWT(['wellKnownUrl' => 'badprotocol://fakeurl']);
+
+        $this->assertEmpty($BYUJWT->getWellKnown());
+        $this->assertInstanceOf(
+            'GuzzleHttp\Exception\RequestException',
+            $BYUJWT->lastException
+        );
+    }
+
     public function testMissingJwks()
     {
         $client = $this->mockClient([static::$openid]);