diff --git a/test/Cached_Dir_PodcastTest.php b/test/Cached_Dir_PodcastTest.php
index 3edd236..7d13d84 100644
--- a/test/Cached_Dir_PodcastTest.php
+++ b/test/Cached_Dir_PodcastTest.php
@@ -29,10 +29,10 @@ public function test_generate_saves_a_cache_file()
         $this->createTestItems();
         age_dir_by('.', 3600);
 
-        $this->assertEmpty(glob('temp/*'));
+        $this->assertEmpty(glob('temp' . DIRECTORY_SEPARATOR . '*'));
         $mp = $this->newPodcast();
         $content = $mp->generate();
-        $this->assertNotEmpty(glob('temp/*'));
+        $this->assertNotEmpty(glob('temp' . DIRECTORY_SEPARATOR . '*'));
     }
 
     public function test_uses_generated_cache_file_if_min_time_not_elapsed_yet()
@@ -99,7 +99,7 @@ public function test_renews_cache_if_old_but_not_stale()
         $this->assertEquals($content, $content2);
 
         clearstatcache();
-        foreach(glob('temp/*.xml') as $filename)
+        foreach(glob(temp_xml_glob()) as $filename)
         {
             // cache file should have been refreshed
             $this->assertGreaterThan(time() - 3, filemtime($filename));
diff --git a/test/CachingTest.php b/test/CachingTest.php
index 26da98b..65e37a9 100644
--- a/test/CachingTest.php
+++ b/test/CachingTest.php
@@ -22,7 +22,7 @@ public function test_default_empty_podcast_caches_output_in_default_folder(): vo
     {
         // caches the output in the default temp folder
         $this->assertTrue(is_dir('./temp'));
-        $cached_output_files = glob('./temp/*.xml');
+        $cached_output_files = glob(temp_xml_glob());
         $this->assertCount(1, $cached_output_files);
 
         // caches what was generated
@@ -34,7 +34,7 @@ public function test_default_empty_podcast_caches_output_in_default_folder(): vo
 
     public function test_default_empty_podcast_doesnt_regenerate_in_first_MIN_CACHE_TIME(): void
     {
-        $cached_output_files = glob('./temp/*.xml');
+        $cached_output_files = glob(temp_xml_glob());
         age_dir_by('.', 7);
 
         // bring cache within last 5 seconds
@@ -46,7 +46,7 @@ public function test_default_empty_podcast_doesnt_regenerate_in_first_MIN_CACHE_
         exec('php dir2cast.php --output=out.xml --dont-uncache --ignore-dir2cast-mtime', $new_output, $this->returncode);
 
         clearstatcache();
-        $cached_output_files = glob('./temp/*.xml');
+        $cached_output_files = glob(temp_xml_glob());
         $cached_mtime_after = filemtime($cached_output_files[0]);
 
         $this->assertSame(
@@ -63,7 +63,7 @@ public function test_default_empty_podcast_doesnt_regenerate_in_first_MIN_CACHE_
 
     public function test_default_empty_podcast_renews_cache_file_mtime_after_MIN_CACHE_TIME(): void
     {
-        $cached_output_files = glob('./temp/*.xml');
+        $cached_output_files = glob(temp_xml_glob());
         age_dir_by('.', 7);
 
         // leave cache file 7 seconds ago (default threshold is 5 seconds)
@@ -74,7 +74,7 @@ public function test_default_empty_podcast_renews_cache_file_mtime_after_MIN_CAC
         exec('php dir2cast.php --output=out.xml --dont-uncache --ignore-dir2cast-mtime', $new_output, $this->returncode);
 
         clearstatcache();
-        $cached_output_files = glob('./temp/*.xml');
+        $cached_output_files = glob(temp_xml_glob());
         $cached_mtime_after = filemtime($cached_output_files[0]);
 
         $this->assertGreaterThan(
@@ -91,7 +91,7 @@ public function test_default_empty_podcast_renews_cache_file_mtime_after_MIN_CAC
 
     public function test_default_empty_podcast_doesnt_regenerate_before_MIN_CACHE_TIME_with_a_change(): void
     {
-        $cached_output_files = glob('./temp/*.xml');
+        $cached_output_files = glob(temp_xml_glob());
         age_dir_by('.', 7);
 
         // bring cache within last 5 seconds
@@ -107,7 +107,7 @@ public function test_default_empty_podcast_doesnt_regenerate_before_MIN_CACHE_TI
         exec('php dir2cast.php --output=out.xml --dont-uncache --ignore-dir2cast-mtime', $new_output, $this->returncode);
 
         clearstatcache();
-        $cached_output_files = glob('./temp/*.xml');
+        $cached_output_files = glob(temp_xml_glob());
         $cached_mtime_after = filemtime($cached_output_files[0]);
 
         $this->assertSame(
@@ -126,7 +126,7 @@ public function test_default_empty_podcast_doesnt_regenerate_before_MIN_CACHE_TI
 
     public function test_default_empty_podcast_regenerates_after_MIN_CACHE_TIME_with_a_change(): void
     {
-        $cached_output_files = glob('./temp/*.xml');
+        $cached_output_files = glob(temp_xml_glob());
         age_dir_by('.', 90);
 
         // leave cache file 7 seconds ago (default threshold is 5 seconds)
@@ -141,7 +141,7 @@ public function test_default_empty_podcast_regenerates_after_MIN_CACHE_TIME_with
         exec('php dir2cast.php --output=out.xml --dont-uncache --ignore-dir2cast-mtime', $new_output, $this->returncode);
 
         clearstatcache();
-        $cached_output_files = glob('./temp/*.xml');
+        $cached_output_files = glob(temp_xml_glob());
         $cached_mtime_after = filemtime($cached_output_files[0]);
 
         $this->assertGreaterThan(
@@ -209,7 +209,7 @@ public function test_expired_podcast_is_regenerated(): void
     {
         age_dir_by('.', 86400);
 
-        $cached_output_files = glob('./temp/*.xml');
+        $cached_output_files = glob(temp_xml_glob());
 
         clearstatcache();
         $old_mtime = filemtime($cached_output_files[0]);
@@ -223,7 +223,7 @@ public function test_expired_podcast_is_regenerated(): void
         $this->assertEquals(1, preg_match('/empty\.mp3/', $new_content));
 
         clearstatcache();
-        $cached_output_files = glob('./temp/*.xml');
+        $cached_output_files = glob(temp_xml_glob());
         $new_mtime = filemtime($cached_output_files[0]);
         
         // cache file should be refreshed
@@ -234,7 +234,7 @@ public function test_too_new_file_not_included_in_podcast(): void
     {
         age_dir_by('.', 86400);
 
-        $cached_output_files = glob('./temp/*.xml');
+        $cached_output_files = glob(temp_xml_glob());
 
         clearstatcache();
         $old_mtime = filemtime($cached_output_files[0]);
@@ -254,7 +254,7 @@ public function test_too_new_file_not_included_in_podcast(): void
         $this->assertEquals(0, preg_match('/empty\.mp3/', $new_content));
 
         clearstatcache();
-        $cached_output_files = glob('./temp/*.xml');
+        $cached_output_files = glob(temp_xml_glob());
         $new_mtime = filemtime($cached_output_files[0]);
 
         // cache file should be refreshed
diff --git a/test/Caching_updates_to_dir2castTest.php b/test/Caching_updates_to_dir2castTest.php
index f052351..150ec69 100644
--- a/test/Caching_updates_to_dir2castTest.php
+++ b/test/Caching_updates_to_dir2castTest.php
@@ -10,6 +10,11 @@ class Caching_updates_to_dir2castTest extends TestCase
 
     public $content = '';
 
+    public function temp_xml_glob()
+    {
+        return '.' . DIRECTORY_SEPARATOR . 'temp' . DIRECTORY_SEPARATOR . '*.xml';
+    }
+
     public function setUp(): void
     {
         prepare_testing_dir();
@@ -37,7 +42,7 @@ public function test_update_to_dir2cast_php_invalidates_cache(): void
     {
         file_put_contents('empty.mp3', 'test');
 
-        $cached_output_files = glob('./temp/*.xml');
+        $cached_output_files = glob(temp_xml_glob());
 
         touch('dir2cast.php', time()-3600); // older than the minimum cache time, but newer than the cache files
 
@@ -51,7 +56,7 @@ public function test_update_to_dir2cast_php_invalidates_cache(): void
         // passthru('ls -laR');
 
         clearstatcache();
-        $cached_output_files = glob('./temp/*.xml');
+        $cached_output_files = glob(temp_xml_glob());
         $new_mtime = filemtime($cached_output_files[0]);
 
         // cache file should be refreshed
@@ -70,7 +75,7 @@ public function test_update_to_dir2cast_ini_invalidates_cache(): void
 
         copy('../../dir2cast.ini', 'dir2cast.ini');
 
-        $cached_output_files = glob('./temp/*.xml');
+        $cached_output_files = glob(temp_xml_glob());
 
         touch('dir2cast.ini', time()-3600); // older than the minimum cache time, but newer than the cache files
 
@@ -82,7 +87,7 @@ public function test_update_to_dir2cast_ini_invalidates_cache(): void
         // print(implode("\n", $debug_out));
 
         clearstatcache();
-        $cached_output_files = glob('./temp/*.xml');
+        $cached_output_files = glob(temp_xml_glob());
         $new_mtime = filemtime($cached_output_files[0]);
 
         // cache file should be refreshed
diff --git a/test/Caching_updates_to_feed_metadataTest.php b/test/Caching_updates_to_feed_metadataTest.php
index fd0b0f4..4c07f65 100644
--- a/test/Caching_updates_to_feed_metadataTest.php
+++ b/test/Caching_updates_to_feed_metadataTest.php
@@ -35,7 +35,7 @@ public function setUp(): void
 
     protected function _update_feed()
     {
-        $cached_output_files = glob('./temp/*.xml');
+        $cached_output_files = glob(temp_xml_glob());
 
         clearstatcache();
         $old_mtime = filemtime($cached_output_files[0]);
@@ -44,7 +44,7 @@ protected function _update_feed()
         // print(implode("\n", $debug_out));
 
         clearstatcache();
-        $cached_output_files = glob('./temp/*.xml');
+        $cached_output_files = glob(temp_xml_glob());
         $new_mtime = filemtime($cached_output_files[0]);
 
         // cache file should be refreshed
diff --git a/test/Locking_Cached_Dir_PodcastTest.php b/test/Locking_Cached_Dir_PodcastTest.php
index 040a437..ca4edf1 100644
--- a/test/Locking_Cached_Dir_PodcastTest.php
+++ b/test/Locking_Cached_Dir_PodcastTest.php
@@ -25,7 +25,7 @@ public function test_cache_file_is_locked()
         $content = $mp->generate();
         unset($mp);
 
-        foreach(glob('temp/*.xml') as $cachefile)
+        foreach(glob(temp_xml_glob()) as $cachefile)
         {
             $fh = fopen($cachefile, 'a');
             $this->assertTrue(flock($fh, LOCK_NB | LOCK_EX));
@@ -35,7 +35,7 @@ public function test_cache_file_is_locked()
         $mp2 = $this->newPodcast();
         $content2 = $mp2->generate();
 
-        foreach(glob('temp/*.xml') as $cachefile)
+        foreach(glob(temp_xml_glob()) as $cachefile)
         {
             $fh = fopen($cachefile, 'a');
             $this->assertFalse(flock($fh, LOCK_NB | LOCK_EX));
@@ -45,11 +45,11 @@ public function test_cache_file_is_locked()
 
     public function test_temporary_lockfile_is_deleted_if_not_used()
     {
-        $this->assertEmpty(glob('temp/*'));
+        $this->assertEmpty(glob('temp' . DIRECTORY_SEPARATOR . '*'));
         $mp = $this->newPodcast();
-        $this->assertNotEmpty(glob('temp/*'));
+        $this->assertNotEmpty(glob('temp' . DIRECTORY_SEPARATOR . '*'));
         unset($mp);
-        $this->assertEmpty(glob('temp/*'));
+        $this->assertEmpty(glob('temp' . DIRECTORY_SEPARATOR . '*'));
     }
 
     public static function tearDownAfterClass(): void
diff --git a/test/RSS_Item_Caching_getID3_Podcast_HelperTest.php b/test/RSS_Item_Caching_getID3_Podcast_HelperTest.php
index 6af3740..2d88645 100644
--- a/test/RSS_Item_Caching_getID3_Podcast_HelperTest.php
+++ b/test/RSS_Item_Caching_getID3_Podcast_HelperTest.php
@@ -61,9 +61,9 @@ public function test_changed_file_is_rescanned()
 
     public function test_empty_rss_item()
     {
-        $this->assertCount(0, glob('temp/*'));
+        $this->assertCount(0, glob('temp' . DIRECTORY_SEPARATOR . '*'));
         parent::test_empty_rss_item();
-        $this->assertCount(1, glob('temp/*'));
+        $this->assertCount(1, glob('temp' . DIRECTORY_SEPARATOR . '*'));
 
         // now do it again, from the cache
         $mp = new MyPodcast();
@@ -88,9 +88,9 @@ public function test_empty_rss_item()
 
     public function test_id3v1_artist_album_title()
     {
-        $this->assertCount(0, glob('temp/*'));
+        $this->assertCount(0, glob('temp' . DIRECTORY_SEPARATOR . '*'));
         parent::test_id3v1_artist_album_title();
-        $this->assertCount(1, glob('temp/*'));
+        $this->assertCount(1, glob('temp' . DIRECTORY_SEPARATOR . '*'));
 
         $mp = new MyPodcast();
         $mock = $this->getid3_helper_mock();
diff --git a/test/bootstrap.php b/test/bootstrap.php
index 800d89f..e24b79e 100644
--- a/test/bootstrap.php
+++ b/test/bootstrap.php
@@ -79,6 +79,11 @@ function prepare_testing_dir()
     }
 }
 
+function temp_xml_glob()
+{
+    return '.' . DIRECTORY_SEPARATOR . 'temp' . DIRECTORY_SEPARATOR . '*.xml';
+}
+
 
 define('NO_DISPATCHER', true);