tests: removes temp dir after test

Author: dg

tests/bootstrap.php

@@ -15,9 +15,12 @@
 
 
 // create temporary directory
-define('TEMP_DIR', __DIR__ . '/tmp/' . getmypid());
-@mkdir(dirname(TEMP_DIR)); // @ - directory may already exist
-Tester\Helpers::purge(TEMP_DIR);
+define('TEMP_DIR', __DIR__ . '/tmp/' . lcg_value());
+@mkdir(TEMP_DIR, 0777, TRUE); // @ - base directory may already exist
+register_shutdown_function(function () {
+	Tester\Helpers::purge(TEMP_DIR);
+	rmdir(TEMP_DIR);
+});
 
 
 function test(\Closure $function)