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import numpy as np
import pytest
import asdf
from asdf import get_config
from asdf.extension import ExtensionManager
from asdf.extension._serialization_context import BlockAccess, SerializationContext
def test_serialization_context():
extension_manager = ExtensionManager([])
context = SerializationContext("1.4.0", extension_manager, "file://test.asdf", None)
assert context.version == "1.4.0"
assert context.extension_manager is extension_manager
assert context._extensions_used == set()
extension = get_config().extensions[0]
context._mark_extension_used(extension)
assert context._extensions_used == {extension}
context._mark_extension_used(extension)
assert context._extensions_used == {extension}
context._mark_extension_used(extension.delegate)
assert context._extensions_used == {extension}
assert context.url == context._url == "file://test.asdf"
with pytest.raises(TypeError, match=r"Extension must implement the Extension interface"):
context._mark_extension_used(object())
with pytest.raises(ValueError, match=r"ASDF Standard version .* is not supported by asdf==.*"):
SerializationContext("0.5.4", extension_manager, None, None)
def test_get_block_data_callback(tmp_path):
fn = tmp_path / "test.asdf"
# make a file with 2 blocks
arr0 = np.arange(3, dtype="uint8")
arr1 = np.arange(10, dtype="uint8")
asdf.AsdfFile({"arr0": arr0, "arr1": arr1}).write_to(fn)
with asdf.open(fn) as af:
context = af._create_serialization_context()
with pytest.raises(NotImplementedError, match="abstract"):
context.get_block_data_callback(0)
op_ctx = af._create_serialization_context(BlockAccess.READ)
cb0 = op_ctx.get_block_data_callback(0)
# getting the same callback should pass and return the same object
assert op_ctx.get_block_data_callback(0) is cb0
# since we accessed block 0 we shouldn't be allowed to access block 1
with pytest.raises(OSError, match=r"Converters accessing >1.*"):
op_ctx.get_block_data_callback(1)
# unless we use a key
key = op_ctx.generate_block_key()
cb1 = op_ctx.get_block_data_callback(1, key)
assert op_ctx.get_block_data_callback(1, key) is cb1
# we don't know the order of blocks, so find which block
# was used for which array by looking at the size
d0 = cb0()
d1 = cb1()
if d0.size == arr1.size:
arr0, arr1 = arr1, arr0
np.testing.assert_array_equal(d0, arr0)
np.testing.assert_array_equal(d1, arr1)
for access in (BlockAccess.NONE, BlockAccess.WRITE):
op_ctx = af._create_serialization_context(access)
with pytest.raises(NotImplementedError, match="abstract"):
op_ctx.get_block_data_callback(0)
def test_find_available_block_index():
af = asdf.AsdfFile()
context = af._create_serialization_context()
def cb():
return np.arange(3, dtype="uint8")
with pytest.raises(NotImplementedError, match="abstract"):
context.find_available_block_index(cb)
class Foo:
pass
op_ctx = af._create_serialization_context(BlockAccess.WRITE)
op_ctx.assign_object(Foo())
assert op_ctx.find_available_block_index(cb) == 0
for access in (BlockAccess.NONE, BlockAccess.READ):
op_ctx = af._create_serialization_context(access)
with pytest.raises(NotImplementedError, match="abstract"):
op_ctx.find_available_block_index(cb)
def test_generate_block_key():
af = asdf.AsdfFile()
context = af._create_serialization_context()
with pytest.raises(NotImplementedError, match="abstract"):
context.generate_block_key()
class Foo:
pass
obj = Foo()
op_ctx = af._create_serialization_context(BlockAccess.WRITE)
op_ctx.assign_object(obj)
key = op_ctx.generate_block_key()
assert key._is_valid()
assert key._matches_object(obj)
obj = Foo()
op_ctx = af._create_serialization_context(BlockAccess.READ)
# because this test generates but does not assign a key
# it should raise an exception
with pytest.raises(OSError, match=r"Converter generated a key.*"):
key = op_ctx.generate_block_key()
# the key does not yet have an assigned object
assert not key._is_valid()
op_ctx.assign_blocks()
@pytest.mark.parametrize("block_access", [None, *list(BlockAccess)])
def test_get_set_array_storage(block_access):
af = asdf.AsdfFile()
if block_access is None:
context = af._create_serialization_context()
else:
context = af._create_serialization_context(block_access)
arr = np.zeros(3)
storage = "external"
assert af.get_array_storage(arr) != storage
context.set_array_storage(arr, storage)
assert af.get_array_storage(arr) == storage
assert context.get_array_storage(arr) == storage
@pytest.mark.parametrize("block_access", [None, *list(BlockAccess)])
def test_get_set_array_compression(block_access):
af = asdf.AsdfFile()
if block_access is None:
context = af._create_serialization_context()
else:
context = af._create_serialization_context(block_access)
arr = np.zeros(3)
compression = "bzp2"
kwargs = {"a": 1}
assert af.get_array_compression(arr) != compression
assert af.get_array_compression_kwargs(arr) != kwargs
context.set_array_compression(arr, compression, **kwargs)
assert af.get_array_compression(arr) == compression
assert af.get_array_compression_kwargs(arr) == kwargs
assert context.get_array_compression(arr) == compression
assert context.get_array_compression_kwargs(arr) == kwargs
def test_get_set_array_save_base():
af = asdf.AsdfFile()
context = af._create_serialization_context()
arr = np.zeros(3)
cfg = asdf.get_config()
save_base = cfg.default_array_save_base
assert af.get_array_save_base(arr) == save_base
assert context.get_array_save_base(arr) == save_base
save_base = not save_base
context.set_array_save_base(arr, save_base)
assert af.get_array_save_base(arr) == save_base
assert context.get_array_save_base(arr) == save_base
save_base = not save_base
af.set_array_save_base(arr, save_base)
assert af.get_array_save_base(arr) == save_base
assert context.get_array_save_base(arr) == save_base
af.set_array_save_base(arr, None)
assert af.get_array_save_base(arr) is None
assert context.get_array_save_base(arr) is None
@pytest.mark.parametrize("value", [1, "true"])
def test_invalid_set_array_save_base(value):
af = asdf.AsdfFile()
context = af._create_serialization_context()
arr = np.zeros(3)
with pytest.raises(ValueError, match="save_base must be a bool or None"):
af.set_array_save_base(arr, value)
with pytest.raises(ValueError, match="save_base must be a bool or None"):
context.set_array_save_base(arr, value)
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