micropython: add micropython component

components/language/micropython/tests/extmod/vfs_fat_more.py

@@ -0,0 +1,120 @@
+try:
+    import uos
+except ImportError:
+    print("SKIP")
+    raise SystemExit
+
+try:
+    uos.VfsFat
+except AttributeError:
+    print("SKIP")
+    raise SystemExit
+
+
+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:  # MP_BLOCKDEV_IOCTL_BLOCK_COUNT
+            return len(self.data) // self.SEC_SIZE
+        if op == 5:  # MP_BLOCKDEV_IOCTL_BLOCK_SIZE
+            return self.SEC_SIZE
+
+
+try:
+    bdev = RAMFS(50)
+    bdev2 = RAMFS(50)
+except MemoryError:
+    print("SKIP")
+    raise SystemExit
+
+# first we umount any existing mount points the target may have
+try:
+    uos.umount("/")
+except OSError:
+    pass
+for path in uos.listdir("/"):
+    uos.umount("/" + path)
+
+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.errno == 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"))
+
+# test importing a file from a mounted FS
+import usys
+
+usys.path.clear()
+usys.path.append("/sys")
+with open("sys/test_module.py", "w") as f:
+    f.write('print("test_module!")')
+import test_module