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import pytest
from asdf import types
from asdf.exceptions import AsdfConversionWarning, AsdfWarning
from asdf.tests.helpers import assert_roundtrip_tree
def test_conversion_error(tmp_path):
class FooType(types.CustomType):
name = "foo"
def __init__(self, a, b):
self.a = a
self.b = b
@classmethod
def from_tree(cls, tree, ctx):
raise TypeError("This allows us to test the failure")
@classmethod
def to_tree(cls, node, ctx):
return dict(a=node.a, b=node.b)
def __eq__(self, other):
return self.a == other.a and self.b == other.b
class FooExtension:
@property
def types(self):
return [FooType]
@property
def tag_mapping(self):
return []
@property
def url_mapping(self):
return []
foo = FooType(10, "hello")
tree = dict(foo=foo)
with pytest.raises(AsdfConversionWarning):
with pytest.warns(AsdfWarning, match=r"Unable to locate schema file"):
assert_roundtrip_tree(tree, tmp_path, extensions=FooExtension())
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