Change inner workings of test runner to use different bootstrap file when testing the core.

laravel/tests/phpunit.php

@@ -0,0 +1,32 @@
+<?php
+
+// --------------------------------------------------------------
+// Define the directory separator for the environment.
+// --------------------------------------------------------------
+define('DS', DIRECTORY_SEPARATOR);
+
+// --------------------------------------------------------------
+// Set the core Laravel path constants.
+// --------------------------------------------------------------
+require 'paths.php';
+
+// --------------------------------------------------------------
+// Override the application paths when testing the core.
+// --------------------------------------------------------------
+$path = path('sys').'tests'.DS;
+
+set_path('app', $path.'application'.DS);
+
+set_path('bundle', $path.'bundles'.DS);
+
+set_path('storage', $path.'storage'.DS);
+
+// --------------------------------------------------------------
+// Bootstrap the Laravel core.
+// --------------------------------------------------------------
+require path('sys').'core.php';
+
+// --------------------------------------------------------------
+// Start the default bundle.
+// --------------------------------------------------------------
+Laravel\Bundle::start(DEFAULT_BUNDLE);