[Filesystem] Fix transient tests

Author: nicolas-grekas

src/Symfony/Component/ClassLoader/Tests/ClassMapGeneratorTest.php

@@ -22,7 +22,7 @@ class ClassMapGeneratorTest extends \PHPUnit_Framework_TestCase
 
     public function prepare_workspace()
     {
-        $this->workspace = rtrim(sys_get_temp_dir(), DIRECTORY_SEPARATOR).DIRECTORY_SEPARATOR.time().mt_rand(0, 1000);
+        $this->workspace = sys_get_temp_dir().'/'.microtime(true).'.'.mt_rand();
         mkdir($this->workspace, 0777, true);
         $this->workspace = realpath($this->workspace);
     }

src/Symfony/Component/Filesystem/Tests/FilesystemTest.php

@@ -48,7 +48,7 @@ protected function setUp()
     {
         $this->umask = umask(0);
         $this->filesystem = new Filesystem();
-        $this->workspace = rtrim(sys_get_temp_dir(), DIRECTORY_SEPARATOR).DIRECTORY_SEPARATOR.time().mt_rand(0, 1000);
+        $this->workspace = sys_get_temp_dir().'/'.microtime(true).'.'.mt_rand();
         mkdir($this->workspace, 0777, true);
         $this->workspace = realpath($this->workspace);
     }

src/Symfony/Component/Intl/Tests/DateFormatter/AbstractIntlDateFormatterTest.php

@@ -414,7 +414,10 @@ public function testFormatWithDateTimeZoneGmtOffset()
 
     public function testFormatWithIntlTimeZone()
     {
-        if (PHP_VERSION_ID < 50500 && !(extension_loaded('intl') && method_exists('IntlDateFormatter', 'setTimeZone'))) {
+        if (!extension_loaded('intl')) {
+            $this->markTestSkipped('Extension intl is required.');
+        }
+        if (PHP_VERSION_ID < 50500 && !method_exists('IntlDateFormatter', 'setTimeZone')) {
             $this->markTestSkipped('Only in PHP 5.5+ IntlDateFormatter allows to use DateTimeZone objects.');
         }