MAGETWO-32026: [GitHub] Invalid backend frontname During Installation #823

- Change based on CR feedback.

Author: Safwan Khan

dev/tests/unit/testsuite/Magento/Framework/App/DeploymentConfig/BackendConfigTest.php

@@ -30,7 +30,7 @@ public function testUnsetData()
 
     /**
      * @expectedException \InvalidArgumentException
-     * @expectedExceptionMessage Empty backend frontname provided.
+     * @expectedExceptionMessage No backend frontname provided.
      */
     public function testEmptyData()
     {

lib/internal/Magento/Framework/App/DeploymentConfig/BackendConfig.php

@@ -25,11 +25,8 @@ class BackendConfig extends AbstractSegment
      */
     public function __construct(array $data)
     {
-        if (!isset($data[self::KEY_FRONTNAME])) {
-            throw new \InvalidArgumentException("No backend frontname provided.");
-        }
         if (empty($data[self::KEY_FRONTNAME])) {
-            throw new \InvalidArgumentException("Empty backend frontname provided.");
+            throw new \InvalidArgumentException("No backend frontname provided.");
         }
         if (!preg_match('/^[a-zA-Z0-9_]+$/', $data[self::KEY_FRONTNAME])) {
             throw new \InvalidArgumentException("Invalid backend frontname {$data[self::KEY_FRONTNAME]}");