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-rw-r--r--tests/extmod/vfs_basic.py20
1 files changed, 19 insertions, 1 deletions
diff --git a/tests/extmod/vfs_basic.py b/tests/extmod/vfs_basic.py
index c8e203b3d..62b2a2773 100644
--- a/tests/extmod/vfs_basic.py
+++ b/tests/extmod/vfs_basic.py
@@ -10,8 +10,9 @@ except (ImportError, AttributeError):
class Filesystem:
- def __init__(self, id):
+ def __init__(self, id, fail=0):
self.id = id
+ self.fail = fail
def mount(self, readonly, mkfs):
print(self.id, "mount", readonly, mkfs)
@@ -25,6 +26,8 @@ class Filesystem:
def chdir(self, dir):
print(self.id, "chdir", dir)
+ if self.fail:
+ raise OSError(self.fail)
def getcwd(self):
print(self.id, "getcwd")
@@ -158,3 +161,18 @@ uos.chdir("/")
uos.umount("/")
print(uos.listdir("/"))
uos.umount("/mnt")
+
+# chdir to a non-existent mount point (current directory should remain unchanged)
+try:
+ uos.chdir("/foo")
+except OSError:
+ print("OSError")
+print(uos.getcwd())
+
+# chdir to a non-existent subdirectory in a mounted filesystem
+uos.mount(Filesystem(5, 1), "/mnt")
+try:
+ uos.chdir("/mnt/subdir")
+except OSError:
+ print("OSError")
+print(uos.getcwd())