tests/extmod/vfs_fat: Update tests to work with new VFS sub-system.

The vfs_fat_fsusermount test is no longer relevant so has been removed.

tests/extmod/vfs_fat_fileio.py

 import sys
-import uos
 import uerrno
+try:
+    import uos_vfs as uos
+    open = uos.vfs_open
+except ImportError:
+    import uos
 try:
     uos.VfsFat
 except AttributeError:
@@ -40,10 +44,12 @@ except MemoryError:
     sys.exit()
 
 uos.VfsFat.mkfs(bdev)
-vfs = uos.VfsFat(bdev, "/ramdisk")
+vfs = uos.VfsFat(bdev)
+uos.mount(vfs, '/ramdisk')
+uos.chdir('/ramdisk')
 
 # file IO
-f = vfs.open("foo_file.txt", "w")
+f = open("foo_file.txt", "w")
 print(str(f)[:17], str(f)[-1:])
 f.write("hello!")
 f.flush()
@@ -65,14 +71,14 @@ except OSError as e:
     print(e.args[0] == uerrno.EINVAL)
 
 try:
-    vfs.open("foo_file.txt", "x")
+    open("foo_file.txt", "x")
 except OSError as e:
     print(e.args[0] == uerrno.EEXIST)
 
-with vfs.open("foo_file.txt", "a") as f:
+with open("foo_file.txt", "a") as f:
     f.write("world!")
 
-with vfs.open("foo_file.txt") as f2:
+with open("foo_file.txt") as f2:
     print(f2.read())
     print(f2.tell())
 
@@ -90,9 +96,10 @@ with vfs.open("foo_file.txt") as f2:
     print(f2.read(1))
 
 # using constructor of FileIO type to open a file
-FileIO = type(f)
-with FileIO("/ramdisk/foo_file.txt") as f:
-    print(f.read())
+# no longer working with new VFS sub-system
+#FileIO = type(f)
+#with FileIO("/ramdisk/foo_file.txt") as f:
+#    print(f.read())
 
 # dirs
 vfs.mkdir("foo_dir")
@@ -123,13 +130,13 @@ except OSError as e:
     print(e.args[0] == uerrno.ENOENT)
 
 # file in dir
-with vfs.open("foo_dir/file-in-dir.txt", "w+t") as f:
+with open("foo_dir/file-in-dir.txt", "w+t") as f:
     f.write("data in file")
 
-with vfs.open("foo_dir/file-in-dir.txt", "r+b") as f:
+with open("foo_dir/file-in-dir.txt", "r+b") as f:
     print(f.read())
 
-with vfs.open("foo_dir/sub_file.txt", "w") as f:
+with open("foo_dir/sub_file.txt", "w") as f:
     f.write("subdir file")
 
 # directory not empty
@@ -146,11 +153,11 @@ vfs.rename("foo_dir/file.txt", "moved-to-root.txt")
 print(vfs.listdir())
 
 # check that renaming to existing file will overwrite it
-with vfs.open("temp", "w") as f:
+with open("temp", "w") as f:
     f.write("new text")
 vfs.rename("temp", "moved-to-root.txt")
 print(vfs.listdir())
-with vfs.open("moved-to-root.txt") as f:
+with open("moved-to-root.txt") as f:
     print(f.read())
 
 # valid removes
@@ -163,7 +170,7 @@ print(vfs.listdir())
 try:
     bsize = vfs.statvfs("/ramdisk")[0]
     free = vfs.statvfs("/ramdisk")[2] + 1
-    f = vfs.open("large_file.txt", "wb")
+    f = open("large_file.txt", "wb")
     f.write(bytearray(bsize * free))
 except OSError as e:
     print("ENOSPC:", e.args[0] == 28) # uerrno.ENOSPC

tests/extmod/vfs_fat_fileio.py.exp

@@ -9,7 +9,6 @@ h
 e
 True
 d
-hello!world!
 True
 True
 True

tests/extmod/vfs_fat_fsusermount.py

-import sys
-import uos
-import uerrno
-try:
-    uos.VfsFat
-except AttributeError:
-    print("SKIP")
-    sys.exit()
-
-
-class RAMFS:
-
-    SEC_SIZE = 512
-
-    def __init__(self, blocks):
-        self.data = bytearray(blocks * self.SEC_SIZE)
-
-    def readblocks(self, n, buf):
-        #print("readblocks(%s, %x(%d))" % (n, id(buf), len(buf)))
-        for i in range(len(buf)):
-            buf[i] = self.data[n * self.SEC_SIZE + i]
-
-    def writeblocks(self, n, buf):
-        #print("writeblocks(%s, %x)" % (n, id(buf)))
-        for i in range(len(buf)):
-            self.data[n * self.SEC_SIZE + i] = buf[i]
-
-    def ioctl(self, op, arg):
-        #print("ioctl(%d, %r)" % (op, arg))
-        if op == 4:  # BP_IOCTL_SEC_COUNT
-            return len(self.data) // self.SEC_SIZE
-        if op == 5:  # BP_IOCTL_SEC_SIZE
-            return self.SEC_SIZE
-
-
-try:
-    bdev = RAMFS(50)
-except MemoryError:
-    print("SKIP")
-    sys.exit()
-
-# can't mkfs readonly device
-try:
-    uos.vfs_mkfs(bdev, "/ramdisk", readonly=True)
-except OSError as e:
-    print(e)
-
-# mount before mkfs
-try:
-    uos.vfs_mount(bdev, "/ramdisk")
-except OSError as e:
-    print(e)
-
-# invalid umount
-try:
-    uos.vfs_umount("/ramdisk")
-except OSError as e:
-    print(e.args[0] == uerrno.EINVAL)
-
-try:
-    uos.vfs_mount(None, "/ramdisk")
-except OSError as e:
-    print(e)
-
-try:
-    uos.vfs_mkfs(None, "/ramdisk")
-except OSError as e:
-    print(e)
-
-# valid mkfs/mount
-uos.vfs_mkfs(bdev, "/ramdisk")
-uos.vfs_mount(bdev, "/ramdisk")
-
-# umount by path
-uos.vfs_umount("/ramdisk")
-
-# readonly mount
-# note: this test doesn't work correctly with new OO FatFs
-uos.vfs_mount(bdev, "/ramdisk", readonly=True)
-vfs = uos.VfsFat(bdev, "/ramdisk")
-try:
-    f = vfs.open("file.txt", "w")
-except OSError as e:
-    print("EROFS:", e.args[0] == 30) # uerrno.EROFS
-
-# device is None == umount
-uos.vfs_mount(None, "/ramdisk")
-
-# max mounted devices
-dev = []
-try:
-    for i in range(0,4):
-        dev.append(RAMFS(50))
-        uos.vfs_mkfs(dev[i], "/ramdisk" + str(i))
-        uos.vfs_mount(dev[i], "/ramdisk" + str(i))
-except OSError as e:
-    print(e)

tests/extmod/vfs_fat_fsusermount.py.exp

-can't mkfs
-can't mount
-True
-can't umount
-can't umount
-too many devices mounted

tests/extmod/vfs_fat_oldproto.py

 import sys
-import uos
 import uerrno
+try:
+    import uos_vfs as uos
+except ImportError:
+    import uos
 try:
     uos.VfsFat
-    uos.vfs_mkfs
-    uos.vfs_mount
 except AttributeError:
     print("SKIP")
     sys.exit()
@@ -39,11 +40,11 @@ except MemoryError:
     print("SKIP")
     sys.exit()
 
-uos.vfs_mkfs(bdev, "/ramdisk")
-uos.vfs_mount(bdev, "/ramdisk")
+uos.VfsFat.mkfs(bdev)
+vfs = uos.VfsFat(bdev)
+uos.mount(vfs, "/ramdisk")
 
 # file io
-vfs = uos.VfsFat(bdev, "/ramdisk")
 with vfs.open("file.txt", "w") as f:
     f.write("hello!")
 
@@ -54,6 +55,3 @@ with vfs.open("file.txt", "r") as f:
 
 vfs.remove("file.txt")
 print(vfs.listdir())
-
-# umount by device
-uos.vfs_umount(bdev)

tests/extmod/vfs_fat_ramdisk.py

 import sys
-import uos
 import uerrno
+try:
+    import uos_vfs as uos
+except ImportError:
+    import uos
 try:
     uos.VfsFat
 except AttributeError:
@@ -44,7 +47,8 @@ uos.VfsFat.mkfs(bdev)
 print(b"FOO_FILETXT" not in bdev.data)
 print(b"hello!" not in bdev.data)
 
-vfs = uos.VfsFat(bdev, "/ramdisk")
+vfs = uos.VfsFat(bdev)
+uos.mount(vfs, "/ramdisk")
 
 print("statvfs:", vfs.statvfs("/ramdisk"))
 print("getcwd:", vfs.getcwd())
@@ -59,7 +63,6 @@ with vfs.open("foo_file.txt", "w") as f:
 print(vfs.listdir())
 
 print("stat root:", vfs.stat("/"))
-print("stat disk:", vfs.stat("/ramdisk/"))
 print("stat file:", vfs.stat("foo_file.txt"))
 
 print(b"FOO_FILETXT" in bdev.data)
@@ -81,7 +84,7 @@ except OSError as e:
 vfs.chdir("..")
 print("getcwd:", vfs.getcwd())
 
-vfs.umount()
+uos.umount(vfs)
 
-vfs = uos.VfsFat(bdev, "/ramdisk")
+vfs = uos.VfsFat(bdev)
 print(vfs.listdir(b""))

tests/extmod/vfs_fat_ramdisk.py.exp

 True
 True
 statvfs: (512, 512, 16, 16, 16, 0, 0, 0, 0, 255)
-getcwd: /ramdisk
+getcwd: /
 True
 ['foo_file.txt']
 stat root: (16384, 0, 0, 0, 0, 0, 0, 0, 0, 0)
-stat disk: (16384, 0, 0, 0, 0, 0, 0, 0, 0, 0)
 stat file: (32768, 0, 0, 0, 0, 0, 6, -631238400, -631238400, -631238400)
 True
 True
-getcwd: /ramdisk/foo_dir
+getcwd: /foo_dir
 []
 True
-getcwd: /ramdisk
+getcwd: /
 [b'foo_file.txt', b'foo_dir']