import os
import zarr

z = zarr.create_array(
    store="appending.zarr",
    name="test",
    shape=(2,),
    dtype=int,
    chunks=(1,),
    config={"write_empty_chunks": True},
    overwrite=True,
    fill_value=0,
    zarr_format=3,
)

z[:] = 0

# if you comment out this re-opening then everything works as intended
z = zarr.open(
    "appending.zarr", path="test", config={"write_empty_chunks": True}, fill_value=0
)
print(os.listdir("appending.zarr/test/c/"))

z.resize((4,))

print(os.listdir("appending.zarr/test/c/"))
l = os.listdir("appending.zarr/test/c/")
print(l)
assert l == ['0', '1',]

# now put a value into the newly appended chunks
z[2:] = 0
l = os.listdir("appending.zarr/test/c/")
print(l)
# assert l == ['0', '1', '2', '3']


# putting in a value of zero makes all empty chunks be removed from disk
z[:] = 0

l = os.listdir("appending.zarr/test/c/")
print(l)
# assert l == ['0', '1', '2', '3']