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from __future__ import annotations
import json
import logging
import os
import re
from dataclasses import dataclass, field
from pathlib import Path, PurePath
from test.data import TEST_DATA_DIR
from test.utils import GraphHelper
from typing import (
ClassVar,
Collection,
Dict,
Iterable,
List,
Optional,
OrderedDict,
Pattern,
Tuple,
Union,
cast,
)
import pytest
from _pytest.mark.structures import Mark, MarkDecorator, ParameterSet
import rdflib.compare
import rdflib.util
from rdflib.graph import ConjunctiveGraph
from rdflib.namespace import XSD
from rdflib.term import URIRef
from rdflib.util import guess_format
TEST_DIR = Path(__file__).parent.parent.absolute()
VARIANTS_DIR = TEST_DATA_DIR / "variants"
# Put files from other directories in here.
EXTRA_FILES: List[Path] = []
SUFFIX_FORMAT_MAP = {**rdflib.util.SUFFIX_FORMAT_MAP, "hext": "hext"}
@dataclass
class GraphAsserts:
"""
A specification of asserts that must be checked against a graph. This is
read in from a JSON dict.
"""
quad_count: Optional[int] = None
exact_match: bool = False
has_subject_iris: Optional[List[str]] = None
def check(
self, first_graph: Optional[ConjunctiveGraph], graph: ConjunctiveGraph
) -> None:
"""
if `first_graph` is `None` then this is the first check before any
other graphs have been processed.
"""
if self.quad_count is not None:
assert self.quad_count == len(list(graph.quads()))
if first_graph is not None and self.exact_match:
GraphHelper.assert_quad_sets_equals(first_graph, graph)
if first_graph is None and self.has_subject_iris is not None:
subjects_iris = {
f"{subject}"
for subject in graph.subjects()
if isinstance(subject, URIRef)
}
assert set(self.has_subject_iris) == subjects_iris
@classmethod
def from_path(cls, path: Path) -> GraphAsserts:
with path.open("r") as f:
return cls(**json.load(f))
@dataclass(order=True)
class GraphVariants:
"""
Represents a graph with multiple variants in different files.
"""
key: str
variants: Dict[str, Path] = field(default_factory=OrderedDict)
asserts: GraphAsserts = field(default_factory=lambda: GraphAsserts())
_variant_regex: ClassVar[Pattern[str]] = re.compile(
r"^(.*?)(|[-]variant-[^/]+|[-]asserts)$"
)
def pytest_param(
self,
marks: Optional[
Union[MarkDecorator, Collection[Union[MarkDecorator, Mark]]]
] = None,
) -> ParameterSet:
if marks is None:
marks = cast(Tuple[MarkDecorator], tuple())
logging.debug("self = %s", self)
return pytest.param(self, id=self.key, marks=marks)
@classmethod
def _decompose_path(cls, file_path: Path, basedir: Optional[Path]):
if basedir:
file_path = file_path.absolute().resolve().relative_to(basedir)
name_noext, ext = os.path.splitext(file_path)
name_noext_path = PurePath(name_noext)
match = cls._variant_regex.match("/".join(name_noext_path.parts))
if match is None:
raise RuntimeError(f"{cls._variant_regex!r} did not match {name_noext}")
file_key = match.group(1)
variant_key = f"{match.group(2)}{ext}"
return (file_key, variant_key)
@classmethod
def for_files(
cls, file_paths: Iterable[Path], basedir: Optional[Path] = None
) -> Dict[str, "GraphVariants"]:
graph_varaint_dict: Dict[str, GraphVariants] = {}
for file_path in file_paths:
logging.debug("file_path = %s", file_path)
file_key, variant_key = cls._decompose_path(file_path, basedir)
# file_key = f"{file_path.parent / stem}"
if file_key not in graph_varaint_dict:
graph_variant = graph_varaint_dict[file_key] = GraphVariants(file_key)
else:
graph_variant = graph_varaint_dict[file_key]
if variant_key.endswith("-asserts.json"):
graph_variant.asserts = GraphAsserts.from_path(file_path)
else:
graph_variant.variants[variant_key] = file_path
return graph_varaint_dict
@classmethod
def for_directory(
cls, directory: Path, basedir: Optional[Path] = None
) -> Dict[str, "GraphVariants"]:
file_paths = []
for file_path in directory.glob("**/*"):
if not file_path.is_file():
continue
if file_path.name.endswith(".md"):
continue
file_paths.append(file_path)
logging.debug("file_paths = %s", file_paths)
return cls.for_files(file_paths, basedir)
GRAPH_VARIANT_DICT = {
**GraphVariants.for_directory(VARIANTS_DIR, TEST_DATA_DIR),
**GraphVariants.for_files(EXTRA_FILES, TEST_DIR),
}
EXPECTED_FAILURES = {
("variants/schema_only_base"): pytest.mark.xfail(
reason="Some issue with handling base URI that does not end with a slash",
raises=ValueError,
),
("variants/rdf11trig_eg2"): pytest.mark.xfail(
reason="""
This fails randomly, passing less than 10% of the time, and always failing
with comparing hext against trig. Not clear why, it may be a big with hext
parsing.
AssertionError: checking rdf11trig_eg2.hext against rdf11trig_eg2.trig
in both:
(rdflib.term.BNode('cb0'), rdflib.term.URIRef('http://xmlns.com/foaf/0.1/mbox'), rdflib.term.URIRef('mailto:bob@oldcorp.example.org'))
(rdflib.term.BNode('cb0'), rdflib.term.URIRef('http://xmlns.com/foaf/0.1/name'), rdflib.term.Literal('Bob'))
(rdflib.term.URIRef('http://example.org/bob'), rdflib.term.URIRef('http://purl.org/dc/terms/publisher'), rdflib.term.Literal('Bob'))
(rdflib.term.URIRef('http://example.org/alice'), rdflib.term.URIRef('http://purl.org/dc/terms/publisher'), rdflib.term.Literal('Alice'))
only in first:
(rdflib.term.BNode('cb0'), rdflib.term.URIRef('http://xmlns.com/foaf/0.1/knows'), rdflib.term.BNode('cbb5eb12b5dcf688537b0298cce144c6dd68cf047530d0b4a455a8f31f314244fd'))
(rdflib.term.BNode('cbb5eb12b5dcf688537b0298cce144c6dd68cf047530d0b4a455a8f31f314244fd'), rdflib.term.URIRef('http://xmlns.com/foaf/0.1/mbox'), rdflib.term.URIRef('mailto:alice@work.example.org'))
(rdflib.term.BNode('cbb5eb12b5dcf688537b0298cce144c6dd68cf047530d0b4a455a8f31f314244fd'), rdflib.term.URIRef('http://xmlns.com/foaf/0.1/name'), rdflib.term.Literal('Alice'))
only in second:
(rdflib.term.BNode('cb0'), rdflib.term.URIRef('http://xmlns.com/foaf/0.1/knows'), rdflib.term.BNode('cbcd41774964510991c01701d8430149bc373e1f23734d9c938c81a40b1429aa33'))
(rdflib.term.BNode('cbcd41774964510991c01701d8430149bc373e1f23734d9c938c81a40b1429aa33'), rdflib.term.URIRef('http://xmlns.com/foaf/0.1/mbox'), rdflib.term.URIRef('mailto:alice@work.example.org'))
(rdflib.term.BNode('cbcd41774964510991c01701d8430149bc373e1f23734d9c938c81a40b1429aa33'), rdflib.term.URIRef('http://xmlns.com/foaf/0.1/name'), rdflib.term.Literal('Alice'))
""",
raises=AssertionError,
),
("variants/diverse_quads"): pytest.mark.xfail(
reason="""
TriG parsing gets confused about what graph 'XSD string' appears in:
(rdflib.term.URIRef('example:subject'),
rdflib.term.URIRef('http://example.com/predicate'),
rdflib.term.Literal('XSD string'),
- rdflib.term.URIRef('example:graph')),
+ rdflib.term.URIRef('urn:example:graph')),
? ++++
""",
raises=AssertionError,
),
}
def tests_found() -> None:
logging.debug("VARIANTS_DIR = %s", VARIANTS_DIR)
logging.debug("EXTRA_FILES = %s", EXTRA_FILES)
assert len(GRAPH_VARIANT_DICT) >= 1
logging.debug("ALL_VARIANT_GRAPHS = %s", GRAPH_VARIANT_DICT)
xml_literal = GRAPH_VARIANT_DICT.get("variants/xml_literal")
assert xml_literal is not None
assert len(xml_literal.variants) >= 5
assert xml_literal.asserts.quad_count == 1
@pytest.mark.parametrize(
"graph_variant",
[
graph_variant.pytest_param(EXPECTED_FAILURES.get(graph_variant.key))
for graph_variant in GRAPH_VARIANT_DICT.values()
],
)
def test_variants(graph_variant: GraphVariants) -> None:
"""
All variants of a graph are isomorphic with the first variant, and thus
eachother.
"""
logging.debug("graph_variant = %s", graph_variant)
public_id = URIRef(f"example:{graph_variant.key}")
assert len(graph_variant.variants) > 0
first_graph: Optional[ConjunctiveGraph] = None
first_path: Optional[Path] = None
logging.debug("graph_variant.asserts = %s", graph_variant.asserts)
for variant_key, variant_path in graph_variant.variants.items():
logging.debug("variant_path = %s", variant_path)
format = guess_format(variant_path.name, fmap=SUFFIX_FORMAT_MAP)
assert format is not None, f"could not determine format for {variant_path.name}"
graph = ConjunctiveGraph()
graph.parse(variant_path, format=format, publicID=public_id)
# Stripping data types as different parsers (e.g. hext) have different
# opinions of when a bare string is of datatype XSD.string or not.
# Probably something that needs more investigation.
GraphHelper.strip_literal_datatypes(graph, {XSD.string})
graph_variant.asserts.check(first_graph, graph)
if first_graph is None:
first_graph = graph
first_path = variant_path
else:
assert first_path is not None
GraphHelper.assert_isomorphic(
first_graph,
graph,
f"checking {variant_path.relative_to(VARIANTS_DIR)} against {first_path.relative_to(VARIANTS_DIR)}",
)
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