Add test

Author: squatto

phpunit.xml

@@ -19,6 +19,7 @@
     <php>
         <env name="SHIPSTATION_TESTING" value="false"/>
         <env name="KEY" value=""/>
+        <env name="PARTNER_KEY" value=""/>
         <env name="SECRET" value=""/>
         <env name="API_URL" value=""/>
     </php>

tests/ShipStationTest.php

@@ -22,7 +22,12 @@ public function setUp()
             exit();
         }
 
-        $this->shipStation = new LaravelShipStation\ShipStation(getenv('KEY'), getenv('SECRET'), getenv('API_URL'));
+        $this->shipStation = new LaravelShipStation\ShipStation(
+            getenv('KEY'),
+            getenv('SECRET'),
+            getenv('API_URL'),
+            getenv('PARTNER_KEY')
+        );
     }
 
     /** @test */
@@ -126,4 +131,19 @@ public function rate_limits_are_set_after_request()
         $this->assertGreaterThanOrEqual(0, $this->shipStation->getSecondsUntilReset());
         $this->assertInternalType('boolean', $this->shipStation->isRateLimited());
     }
+
+    /** @test */
+    public function partner_api_key_header_is_set_when_defined()
+    {
+        if (empty(getenv('PARTNER_KEY'))) {
+            // nothing to test
+            return;
+        }
+
+        $this->shipStation->webhooks->get();
+
+        $headers = $this->shipStation->request->getConfig('headers');
+
+        $this->assertArrayHasKey('x-partner', $headers);
+    }
 }