From 03a1f94ea16a532bd4219092edb06e251d9a0ca5 Mon Sep 17 00:00:00 2001
From: Damien George
Date: Thu, 29 Oct 2020 11:31:53 +1100
Subject: extmod/vfs_lfs: Support mounting LFS filesystems in read-only mode.

Signed-off-by: Damien George <damien@micropython.org>
---
 tests/extmod/vfs_lfs_mount.py     | 17 +++++++++++++++++
 tests/extmod/vfs_lfs_mount.py.exp |  6 ++++++
 2 files changed, 23 insertions(+)

(limited to 'tests/extmod')

diff --git a/tests/extmod/vfs_lfs_mount.py b/tests/extmod/vfs_lfs_mount.py
index 2c40b2989..3d8cec607 100644
--- a/tests/extmod/vfs_lfs_mount.py
+++ b/tests/extmod/vfs_lfs_mount.py
@@ -67,6 +67,23 @@ def test(bdev, vfs_class):
     # umount
     uos.umount("/lfs")
 
+    # mount read-only
+    vfs = vfs_class(bdev)
+    uos.mount(vfs, "/lfs", readonly=True)
+
+    # test reading works
+    with open("/lfs/subdir/lfsmod2.py") as f:
+        print("lfsmod2.py:", f.read())
+
+    # test writing fails
+    try:
+        open("/lfs/test_write", "w")
+    except OSError as er:
+        print(repr(er))
+
+    # umount
+    uos.umount("/lfs")
+
     # clear imported modules
     usys.modules.clear()
 
diff --git a/tests/extmod/vfs_lfs_mount.py.exp b/tests/extmod/vfs_lfs_mount.py.exp
index b5c521531..aa654ebe0 100644
--- a/tests/extmod/vfs_lfs_mount.py.exp
+++ b/tests/extmod/vfs_lfs_mount.py.exp
@@ -2,7 +2,13 @@ test <class 'VfsLfs1'>
 hello from lfs
 package
 hello from lfs
+lfsmod2.py: print("hello from lfs")
+
+OSError(30,)
 test <class 'VfsLfs2'>
 hello from lfs
 package
 hello from lfs
+lfsmod2.py: print("hello from lfs")
+
+OSError(36,)
-- 
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