Some more test work

- When cleaning up, make sure we're the original user.  Some tests & failures leave it logged out
- Some better messages

api/tests/Vfs/SharingBase.php

@@ -77,14 +77,15 @@ class SharingBase extends LoggedInTest
 
 	protected function tearDown() : void
 	{
-		LoggedInTest::tearDownAfterClass();
+		try
+		{
+			// Some tests may leave us logged out, which will cause failures in parent cleanup
+			LoggedInTest::tearDownAfterClass();
+		}
+		catch(\Throwable $e) {}
+
 		LoggedInTest::setupBeforeClass();
 
-		// Re-init, since they look at user, fstab, etc.
-		// Also, further tests that access the filesystem fail if we don't
-		Vfs::clearstatcache();
-		Vfs::init_static();
-		Vfs\StreamWrapper::init_static();
 
 		// Need to ask about mounts, or other tests fail
 		Vfs::mount();
@@ -271,8 +272,6 @@ class SharingBase extends LoggedInTest
 		Vfs::$is_root = false;
 
 		$this->mounts[] = $path;
-		Vfs::clearstatcache();
-		Vfs::init_static();
 	}
 
 	/**

api/tests/Vfs/StreamWrapperBase.php

@@ -89,14 +89,9 @@ abstract class StreamWrapperBase extends LoggedInTest
 
 	protected function tearDown() : void
 	{
-		LoggedInTest::tearDownAfterClass();
+		// Make sure we're on the original user.  Failures could cause us to be logged in as someone else
-		LoggedInTest::setupBeforeClass();
+		$this->switchUser($GLOBALS['EGW_USER'], $GLOBALS['EGW_PASSWORD']);
-
+		$this->mount();
-		// Re-init, since they look at user, fstab, etc.
-		// Also, further tests that access the filesystem fail if we don't
-		Vfs::clearstatcache();
-		Vfs::init_static();
-
 		// Need to ask about mounts, or other tests fail
 		Vfs::mount();
 
@@ -259,7 +254,7 @@ abstract class StreamWrapperBase extends LoggedInTest
 		);
 		$this->assertFalse(
 				file_get_contents(Vfs::PREFIX . $file),
-				"Problem reading someone else's file with no permission"
+				"Read someone else's file with no permission. " . Vfs::PREFIX . $file
 		);
 
 	}
@@ -318,7 +313,7 @@ abstract class StreamWrapperBase extends LoggedInTest
 		$this->assertEquals(
 				$contents,
 				file_get_contents(Vfs::PREFIX . $file),
-				"Problem reading someone else's file with permission"
+				"Problem reading contents of someone else's file (".Vfs::PREFIX . "$file) with permission"
 		);
 		$this->assertTrue(
 				Vfs::is_readable($file),