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import io
import os
import numpy as np
import pytest
from numpy.testing import assert_array_equal
import asdf
from asdf import reference
from asdf.tags.core import ndarray
from ._helpers import assert_tree_match
def test_external_reference(tmp_path):
exttree = {
"cool_stuff": {"a": np.array([0, 1, 2], float), "b": np.array([3, 4, 5], float)},
"list_of_stuff": ["foobar", 42, np.array([7, 8, 9], float)],
}
external_path = os.path.join(str(tmp_path), "external.asdf")
ext = asdf.AsdfFile(exttree)
# Since we're testing with small arrays, force all arrays to be stored
# in internal blocks rather than letting some of them be automatically put
# inline.
ext.write_to(external_path, all_array_storage="internal")
external_path = os.path.join(str(tmp_path), "external2.asdf")
ff = asdf.AsdfFile(exttree)
ff.write_to(external_path, all_array_storage="internal")
tree = {
# The special name "data" here must be an array. This is
# included so that such validation can be ignored when we just
# have a "$ref".
"data": {"$ref": "external.asdf#/cool_stuff/a"},
"science_data": {"$ref": "external.asdf#/cool_stuff/a"},
"science_data2": {"$ref": "external2.asdf#/cool_stuff/a"},
"foobar": {
"$ref": "external.asdf#/list_of_stuff/0",
},
"answer": {"$ref": "external.asdf#/list_of_stuff/1"},
"array": {
"$ref": "external.asdf#/list_of_stuff/2",
},
"whole_thing": {"$ref": "external.asdf#"},
"myself": {
"$ref": "#",
},
"internal": {"$ref": "#science_data"},
}
def do_asserts(ff):
assert "unloaded" in repr(ff.tree["science_data"])
assert "unloaded" in str(ff.tree["science_data"])
assert len(ff._external_asdf_by_uri) == 0
assert_array_equal(ff.tree["science_data"], exttree["cool_stuff"]["a"])
assert len(ff._external_asdf_by_uri) == 1
assert_array_equal(ff.tree["science_data2"], exttree["cool_stuff"]["a"])
assert len(ff._external_asdf_by_uri) == 2
assert ff.tree["foobar"]() == "foobar"
assert ff.tree["answer"]() == 42
assert_array_equal(ff.tree["array"], exttree["list_of_stuff"][2])
assert_tree_match(ff.tree["whole_thing"](), exttree)
assert_array_equal(ff.tree["whole_thing"]["cool_stuff"]["a"], exttree["cool_stuff"]["a"])
assert_array_equal(ff.tree["myself"]["science_data"], exttree["cool_stuff"]["a"])
# Make sure that referencing oneself doesn't make another call
# to disk.
assert len(ff._external_asdf_by_uri) == 2
assert_array_equal(ff.tree["internal"], exttree["cool_stuff"]["a"])
with asdf.AsdfFile({}, uri=(tmp_path / "main.asdf").as_uri()) as ff:
ff.tree = tree
ff.find_references()
do_asserts(ff)
internal_path = os.path.join(str(tmp_path), "main.asdf")
ff.write_to(internal_path)
with asdf.open(internal_path) as ff:
ff.find_references()
do_asserts(ff)
with asdf.open(internal_path) as ff:
ff.find_references()
assert len(ff._external_asdf_by_uri) == 0
ff.resolve_references()
assert len(ff._external_asdf_by_uri) == 2
assert isinstance(ff.tree["data"], ndarray.NDArrayType)
assert isinstance(ff.tree["science_data"], ndarray.NDArrayType)
assert_array_equal(ff.tree["science_data"], exttree["cool_stuff"]["a"])
assert_array_equal(ff.tree["science_data2"], exttree["cool_stuff"]["a"])
assert ff.tree["foobar"] == "foobar"
assert ff.tree["answer"] == 42
assert_array_equal(ff.tree["array"], exttree["list_of_stuff"][2])
assert_tree_match(ff.tree["whole_thing"], exttree)
assert_array_equal(ff.tree["whole_thing"]["cool_stuff"]["a"], exttree["cool_stuff"]["a"])
assert_array_equal(ff.tree["myself"]["science_data"], exttree["cool_stuff"]["a"])
assert_array_equal(ff.tree["internal"], exttree["cool_stuff"]["a"])
@pytest.mark.remote_data()
def test_external_reference_invalid(tmp_path):
tree = {"foo": {"$ref": "fail.asdf"}}
ff = asdf.AsdfFile()
ff.tree = tree
ff.find_references()
with pytest.raises(ValueError, match=r"Resolved to relative URL"):
ff.resolve_references()
ff = asdf.AsdfFile({}, uri="http://httpstat.us/404")
ff.tree = tree
ff.find_references()
msg = r"[HTTP Error 404: Not Found, HTTP Error 502: Bad Gateway]" # if httpstat.us is down 502 is returned.
with pytest.raises(IOError, match=msg):
ff.resolve_references()
ff = asdf.AsdfFile({}, uri=(tmp_path / "main.asdf").as_uri())
ff.tree = tree
ff.find_references()
with pytest.raises(IOError, match=r"No such file or directory: .*"):
ff.resolve_references()
def test_external_reference_invalid_fragment(tmp_path):
exttree = {"list_of_stuff": ["foobar", 42, np.array([7, 8, 9], float)]}
external_path = os.path.join(str(tmp_path), "external.asdf")
ff = asdf.AsdfFile(exttree)
ff.write_to(external_path)
tree = {"foo": {"$ref": "external.asdf#/list_of_stuff/a"}}
with asdf.AsdfFile({}, uri=(tmp_path / "main.asdf").as_uri()) as ff:
ff.tree = tree
ff.find_references()
with pytest.raises(ValueError, match=r"Unresolvable reference: .*"):
ff.resolve_references()
tree = {"foo": {"$ref": "external.asdf#/list_of_stuff/3"}}
with asdf.AsdfFile({}, uri=(tmp_path / "main.asdf").as_uri()) as ff:
ff.tree = tree
ff.find_references()
with pytest.raises(ValueError, match=r"Unresolvable reference: .*"):
ff.resolve_references()
def test_make_reference(tmp_path):
exttree = {
# Include some ~ and / in the name to make sure that escaping
# is working correctly
"f~o~o/": {"a": np.array([0, 1, 2], float), "b": np.array([3, 4, 5], float)},
}
external_path = os.path.join(str(tmp_path), "external.asdf")
ext = asdf.AsdfFile(exttree)
ext.write_to(external_path)
with asdf.open(external_path) as ext:
ff = asdf.AsdfFile()
ff.tree["ref"] = ext.make_reference(["f~o~o/", "a"])
assert_array_equal(ff.tree["ref"], ext.tree["f~o~o/"]["a"])
ff.write_to(os.path.join(str(tmp_path), "source.asdf"))
with (asdf.open(os.path.join(str(tmp_path), "source.asdf")) as ff,):
ff.find_references()
assert ff.tree["ref"]._uri == "external.asdf#f~0o~0o~1/a"
def test_internal_reference(tmp_path):
testfile = tmp_path / "test.asdf"
tree = {"foo": 2, "bar": {"$ref": "#"}}
ff = asdf.AsdfFile(tree)
ff.find_references()
assert isinstance(ff.tree["bar"], reference.Reference)
ff.resolve_references()
assert ff.tree["bar"]["foo"] == 2
tree = {"foo": 2}
ff = asdf.AsdfFile(tree, uri=testfile.as_uri())
ff.tree["bar"] = ff.make_reference([])
buff = io.BytesIO()
ff.write_to(buff)
buff.seek(0)
ff = asdf.AsdfFile()
assert b"{$ref: ''}" in buff.getvalue()
def test_implicit_internal_reference(tmp_path, with_lazy_tree):
target = {"foo": "bar"}
nested_in_dict = {"target": target}
nested_in_list = [target]
tree = {"target": target, "nested_in_dict": nested_in_dict, "nested_in_list": nested_in_list}
assert tree["target"] is tree["nested_in_dict"]["target"]
assert tree["target"] is tree["nested_in_list"][0]
af = asdf.AsdfFile(tree)
assert af["target"] is af["nested_in_dict"]["target"]
assert af["target"] is af["nested_in_list"][0]
output_path = os.path.join(str(tmp_path), "test.asdf")
af.write_to(output_path)
with asdf.open(output_path) as af:
assert af["target"] is af["nested_in_dict"]["target"]
assert af["target"] is af["nested_in_list"][0]
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