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import sys
import isodate
import datetime
import random
from contextlib import contextmanager
from typing import (
List,
Type,
Iterator,
Set,
Tuple,
Dict,
Any,
TypeVar,
cast,
NamedTuple,
)
from urllib.parse import ParseResult, urlparse, parse_qs
from traceback import print_exc
from threading import Thread
from http.server import BaseHTTPRequestHandler, HTTPServer, SimpleHTTPRequestHandler
import email.message
from nose import SkipTest
from .earl import add_test, report
from rdflib import BNode, Graph, ConjunctiveGraph
from rdflib.term import Node
from unittest.mock import MagicMock, Mock
# TODO: make an introspective version (like this one) of
# rdflib.graphutils.isomorphic and use instead.
def crapCompare(g1, g2):
"""A really crappy way to 'check' if two graphs are equal. It ignores blank
nodes completely and ignores subgraphs."""
if len(g1) != len(g2):
raise Exception("Graphs dont have same length")
for t in g1:
s = _no_blank(t[0])
o = _no_blank(t[2])
if not (s, t[1], o) in g2:
e = "(%s, %s, %s) is not in both graphs!" % (s, t[1], o)
raise Exception(e)
def _no_blank(node):
if isinstance(node, BNode):
return None
if isinstance(node, Graph):
return None # node._Graph__identifier = _SQUASHED_NODE
return node
def check_serialize_parse(fpath, infmt, testfmt, verbose=False):
g = ConjunctiveGraph()
_parse_or_report(verbose, g, fpath, format=infmt)
if verbose:
for t in g:
print(t)
print("========================================")
print("Parsed OK!")
s = g.serialize(format=testfmt)
if verbose:
print(s)
g2 = ConjunctiveGraph()
_parse_or_report(verbose, g2, data=s, format=testfmt)
if verbose:
print(g2.serialize())
crapCompare(g, g2)
def _parse_or_report(verbose, graph, *args, **kwargs):
try:
graph.parse(*args, **kwargs)
except:
if verbose:
print("========================================")
print("Error in parsing serialization:")
print(args, kwargs)
raise
def nose_tst_earl_report(generator, earl_report_name=None):
from optparse import OptionParser
p = OptionParser()
(options, args) = p.parse_args()
skip = 0
tests = 0
success = 0
for t in generator(args):
tests += 1
print("Running ", t[1].uri)
try:
t[0](t[1])
add_test(t[1].uri, "passed")
success += 1
except SkipTest as e:
add_test(t[1].uri, "untested", e.message)
print("skipping %s - %s" % (t[1].uri, e.message))
skip += 1
except KeyboardInterrupt:
raise
except AssertionError:
add_test(t[1].uri, "failed")
except:
add_test(t[1].uri, "failed", "error")
print_exc()
sys.stderr.write("%s\n" % t[1].uri)
print(
"Ran %d tests, %d skipped, %d failed. " % (tests, skip, tests - skip - success)
)
if earl_report_name:
now = isodate.datetime_isoformat(datetime.datetime.utcnow())
earl_report = "test_reports/%s-%s.ttl" % (
earl_report_name,
now.replace(":", ""),
)
report.serialize(earl_report, format="n3")
report.serialize("test_reports/%s-latest.ttl" % earl_report_name, format="n3")
print("Wrote EARL-report to '%s'" % earl_report)
def get_random_ip(parts: List[str] = None) -> str:
if parts is None:
parts = ["127"]
for _ in range(4 - len(parts)):
parts.append(f"{random.randint(0, 255)}")
return ".".join(parts)
@contextmanager
def ctx_http_server(handler: Type[BaseHTTPRequestHandler]) -> Iterator[HTTPServer]:
host = get_random_ip()
server = HTTPServer((host, 0), handler)
server_thread = Thread(target=server.serve_forever)
server_thread.daemon = True
server_thread.start()
yield server
server.shutdown()
server.socket.close()
server_thread.join()
class GraphHelper:
@classmethod
def triple_set(cls, graph: Graph) -> Set[Tuple[Node, Node, Node]]:
return set(graph.triples((None, None, None)))
@classmethod
def equals(cls, lhs: Graph, rhs: Graph) -> bool:
return cls.triple_set(lhs) == cls.triple_set(rhs)
GenericT = TypeVar("GenericT", bound=Any)
def make_spypair(method: GenericT) -> Tuple[GenericT, Mock]:
m = MagicMock()
def wrapper(self: Any, *args: Any, **kwargs: Any) -> Any:
m(*args, **kwargs)
return method(self, *args, **kwargs)
setattr(wrapper, "mock", m)
return cast(GenericT, wrapper), m
HeadersT = Dict[str, List[str]]
PathQueryT = Dict[str, List[str]]
class MockHTTPRequests(NamedTuple):
path: str
parsed_path: ParseResult
path_query: PathQueryT
headers: email.message.Message
class MockHTTPResponse(NamedTuple):
status_code: int
reason_phrase: str
body: bytes
headers: HeadersT
class SimpleHTTPMock:
# TODO: add additional methods (POST, PUT, ...) similar to get
def __init__(self):
self.do_get_requests: List[MockHTTPRequests] = []
self.do_get_responses: List[MockHTTPResponse] = []
_http_mock = self
class Handler(SimpleHTTPRequestHandler):
http_mock = _http_mock
def _do_GET(self):
parsed_path = urlparse(self.path)
path_query = parse_qs(parsed_path.query)
request = MockHTTPRequests(
self.path, parsed_path, path_query, self.headers
)
self.http_mock.do_get_requests.append(request)
response = self.http_mock.do_get_responses.pop(0)
self.send_response(response.status_code, response.reason_phrase)
for header, values in response.headers.items():
for value in values:
self.send_header(header, value)
self.end_headers()
self.wfile.write(response.body)
self.wfile.flush()
return
(do_GET, do_GET_mock) = make_spypair(_do_GET)
self.Handler = Handler
self.do_get_mock = Handler.do_GET_mock
def reset(self):
self.do_get_requests.clear()
self.do_get_responses.clear()
self.do_get_mock.reset_mock()
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