tools/mpremote/tests: Add test for rm -r on /remote vfs.

Signed-off-by: Jos Verlinde <jos_verlinde@hotmail.com>

tools/mpremote/tests/test_filesystem.sh

@@ -233,4 +233,7 @@ $MPREMOTE resume exec "import os;os.chdir('/')"
 $MPREMOTE resume rm -r -v :/ramdisk
 $MPREMOTE resume ls :/ramdisk
 
-echo -----
+echo -----
+# try to delete existing folder in mounted filesystem
+$MPREMOTE mount "${TMP}" + rm -rv :package || echo "expect error"
+echo -----

tools/mpremote/tests/test_filesystem.sh.exp

@@ -267,3 +267,8 @@ removed directory: '/ramdisk/package'
 skipped: '/ramdisk' (vfs mountpoint)
 ls :/ramdisk
 -----
+Local directory ${TMP} is mounted at /remote
+rm :package
+mpremote: rm -r not permitted on /remote directory
+expect error
+-----