[Filesystem] Skip tests on readable file when run with root user

Author: lbassin

Tests/FilesystemTest.php

@@ -50,6 +50,10 @@ public function testCopyUnreadableFileFails()
             $this->markTestSkipped('This test cannot run on Windows.');
         }
 
+        if (!getenv('USER') || 'root' === getenv('USER')) {
+            $this->markTestSkipped('This test will fail if run under superuser');
+        }
+
         $sourceFilePath = $this->workspace.\DIRECTORY_SEPARATOR.'copy_source_file';
         $targetFilePath = $this->workspace.\DIRECTORY_SEPARATOR.'copy_target_file';
 
@@ -124,6 +128,10 @@ public function testCopyWithOverrideWithReadOnlyTargetFails()
             $this->markTestSkipped('This test cannot run on Windows.');
         }
 
+        if (!getenv('USER') || 'root' === getenv('USER')) {
+            $this->markTestSkipped('This test will fail if run under superuser');
+        }
+
         $sourceFilePath = $this->workspace.\DIRECTORY_SEPARATOR.'copy_source_file';
         $targetFilePath = $this->workspace.\DIRECTORY_SEPARATOR.'copy_target_file';
 

Tests/LockHandlerTest.php

@@ -49,6 +49,10 @@ public function testErrorHandlingInLockIfLockPathBecomesUnwritable()
             $this->markTestSkipped('This test cannot run on Windows.');
         }
 
+        if (!getenv('USER') || 'root' === getenv('USER')) {
+            $this->markTestSkipped('This test will fail if run under superuser');
+        }
+
         $lockPath = sys_get_temp_dir().'/'.uniqid('', true);
         $e = null;
         $wrongMessage = null;