def test_empty_like():
# zarr array
z = empty(100, chunks=10, dtype='f4', compressor=Zlib(5),
order='F')
z2 = empty_like(z)
eq(z.shape, z2.shape)
eq(z.chunks, z2.chunks)
eq(z.dtype, z2.dtype)
eq(z.compressor.get_config(), z2.compressor.get_config())
eq(z.fill_value, z2.fill_value)
eq(z.order, z2.order)
# numpy array
a = np.empty(100, dtype='f4')
z3 = empty_like(a)
eq(a.shape, z3.shape)
eq((100,), z3.chunks)
eq(a.dtype, z3.dtype)
assert_is_none(z3.fill_value)
# something slightly silly
a = [0] * 100
z3 = empty_like(a, shape=200)
eq((200,), z3.shape)
# other array-likes
b = np.arange(1000).reshape(100, 10)
c = MockBcolzArray(b, 10)
z = empty_like(c)
eq(b.shape, z.shape)
eq((10, 10), z.chunks)
c = MockH5pyDataset(b, chunks=(10, 2))
z = empty_like(c)
eq(b.shape, z.shape)
eq((10, 2), z.chunks)
c = MockH5pyDataset(b, chunks=None)
z = empty_like(c)
eq(b.shape, z.shape)
assert_is_instance(z.chunks, tuple)
def test_empty_like():
# zarr array
z = empty(100, chunks=10, dtype='f4', compressor=Zlib(5),
order='F')
z2 = empty_like(z)
assert z.shape == z2.shape
assert z.chunks == z2.chunks
assert z.dtype == z2.dtype
assert z.compressor.get_config() == z2.compressor.get_config()
assert z.fill_value == z2.fill_value
assert z.order == z2.order
# numpy array
a = np.empty(100, dtype='f4')
z3 = empty_like(a)
assert a.shape == z3.shape
assert (100,) == z3.chunks
assert a.dtype == z3.dtype
assert z3.fill_value is None
# something slightly silly
a = [0] * 100
z3 = empty_like(a, shape=200)
assert (200,) == z3.shape
# other array-likes
b = np.arange(1000).reshape(100, 10)
c = MockBcolzArray(b, 10)
z = empty_like(c)
assert b.shape == z.shape
assert (10, 10) == z.chunks
c = MockH5pyDataset(b, chunks=(10, 2))
z = empty_like(c)
assert b.shape == z.shape
assert (10, 2) == z.chunks
c = MockH5pyDataset(b, chunks=None)
z = empty_like(c)
assert b.shape == z.shape
assert isinstance(z.chunks, tuple)
def _empty_like_nosync(self, name, data, **kwargs):
path = self._item_path(name)
kwargs.setdefault('synchronizer', self._synchronizer)
return empty_like(data, store=self._store, path=path,
chunk_store=self._chunk_store, **kwargs)
def _empty_like_nosync(self, name, data, **kwargs):
path = self._item_path(name)
kwargs.setdefault('synchronizer', self._synchronizer)
kwargs.setdefault('cache_attrs', self.attrs.cache)
return empty_like(data, store=self._store, path=path,
chunk_store=self._chunk_store, **kwargs)
