tests/extmod: Add more tests for VFS FAT.

tests/extmod/vfs_fat_more.py

+import sys
+import uerrno
+try:
+    import uos_vfs as uos
+    open = uos.vfs_open
+except ImportError:
+    import uos
+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)
+    bdev2 = RAMFS(50)
+except MemoryError:
+    print("SKIP")
+    sys.exit()
+
+uos.VfsFat.mkfs(bdev)
+uos.mount(bdev, '/')
+
+print(uos.getcwd())
+
+f = open('test.txt', 'w')
+f.write('hello')
+f.close()
+
+print(uos.listdir())
+print(uos.listdir('/'))
+print(uos.stat('')[:-3])
+print(uos.stat('/')[:-3])
+print(uos.stat('test.txt')[:-3])
+print(uos.stat('/test.txt')[:-3])
+
+f = open('/test.txt')
+print(f.read())
+f.close()
+
+uos.rename('test.txt', 'test2.txt')
+print(uos.listdir())
+uos.rename('test2.txt', '/test3.txt')
+print(uos.listdir())
+uos.rename('/test3.txt', 'test4.txt')
+print(uos.listdir())
+uos.rename('/test4.txt', '/test5.txt')
+print(uos.listdir())
+
+uos.mkdir('dir')
+print(uos.listdir())
+uos.mkdir('/dir2')
+print(uos.listdir())
+uos.mkdir('dir/subdir')
+print(uos.listdir('dir'))
+for exist in ('', '/', 'dir', '/dir', 'dir/subdir'):
+    try:
+        uos.mkdir(exist)
+    except OSError as er:
+        print('mkdir OSError', er.args[0] == 17) # EEXIST
+
+uos.chdir('/')
+print(uos.stat('test5.txt')[:-3])
+
+uos.VfsFat.mkfs(bdev2)
+uos.mount(bdev2, '/sys')
+print(uos.listdir())
+print(uos.listdir('sys'))
+print(uos.listdir('/sys'))
+
+uos.rmdir('dir2')
+uos.remove('test5.txt')
+print(uos.listdir())
+
+uos.umount('/')
+print(uos.getcwd())
+print(uos.listdir())
+print(uos.listdir('sys'))

tests/extmod/vfs_fat_more.py.exp

+/
+['test.txt']
+['test.txt']
+(16384, 0, 0, 0, 0, 0, 0)
+(16384, 0, 0, 0, 0, 0, 0)
+(32768, 0, 0, 0, 0, 0, 5)
+(32768, 0, 0, 0, 0, 0, 5)
+hello
+['test2.txt']
+['test3.txt']
+['test4.txt']
+['test5.txt']
+['test5.txt', 'dir']
+['test5.txt', 'dir', 'dir2']
+['subdir']
+mkdir OSError True
+mkdir OSError True
+mkdir OSError True
+mkdir OSError True
+mkdir OSError True
+(32768, 0, 0, 0, 0, 0, 5)
+['sys', 'test5.txt', 'dir', 'dir2']
+[]
+[]
+['sys', 'dir']
+/
+['sys']
+[]