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|
"""
Specific tests to validate the "related events" logic used by certain events
inside hyper-h2.
"""
from __future__ import annotations
import pytest
import h2.config
import h2.connection
import h2.events
class TestRelatedEvents:
"""
Related events correlate all those events that happen on a single frame.
"""
example_request_headers = [
(":authority", "example.com"),
(":path", "/"),
(":scheme", "https"),
(":method", "GET"),
]
example_request_headers_bytes = [
(b":authority", b"example.com"),
(b":path", b"/"),
(b":scheme", b"https"),
(b":method", b"GET"),
]
example_response_headers = [
(":status", "200"),
("server", "fake-serv/0.1.0"),
]
informational_response_headers = [
(":status", "100"),
("server", "fake-serv/0.1.0"),
]
example_trailers = [
("another", "field"),
]
server_config = h2.config.H2Configuration(client_side=False)
@pytest.mark.parametrize("request_headers", [example_request_headers, example_request_headers_bytes])
def test_request_received_related_all(self, frame_factory, request_headers) -> None:
"""
RequestReceived has two possible related events: PriorityUpdated and
StreamEnded, all fired when a single HEADERS frame is received.
"""
c = h2.connection.H2Connection(config=self.server_config)
c.initiate_connection()
c.receive_data(frame_factory.preamble())
input_frame = frame_factory.build_headers_frame(
headers=request_headers,
flags=["END_STREAM", "PRIORITY"],
stream_weight=15,
depends_on=0,
exclusive=False,
)
events = c.receive_data(input_frame.serialize())
assert len(events) == 3
base_event = events[0]
other_events = events[1:]
assert base_event.stream_ended in other_events
assert isinstance(base_event.stream_ended, h2.events.StreamEnded)
assert base_event.priority_updated in other_events
assert isinstance(
base_event.priority_updated, h2.events.PriorityUpdated,
)
@pytest.mark.parametrize("request_headers", [example_request_headers, example_request_headers_bytes])
def test_request_received_related_priority(self, frame_factory, request_headers) -> None:
"""
RequestReceived can be related to PriorityUpdated.
"""
c = h2.connection.H2Connection(config=self.server_config)
c.initiate_connection()
c.receive_data(frame_factory.preamble())
input_frame = frame_factory.build_headers_frame(
headers=request_headers,
flags=["PRIORITY"],
stream_weight=15,
depends_on=0,
exclusive=False,
)
events = c.receive_data(input_frame.serialize())
assert len(events) == 2
base_event = events[0]
priority_updated_event = events[1]
assert base_event.priority_updated is priority_updated_event
assert base_event.stream_ended is None
assert isinstance(
base_event.priority_updated, h2.events.PriorityUpdated,
)
@pytest.mark.parametrize("request_headers", [example_request_headers, example_request_headers_bytes])
def test_request_received_related_stream_ended(self, frame_factory, request_headers) -> None:
"""
RequestReceived can be related to StreamEnded.
"""
c = h2.connection.H2Connection(config=self.server_config)
c.initiate_connection()
c.receive_data(frame_factory.preamble())
input_frame = frame_factory.build_headers_frame(
headers=request_headers,
flags=["END_STREAM"],
)
events = c.receive_data(input_frame.serialize())
assert len(events) == 2
base_event = events[0]
stream_ended_event = events[1]
assert base_event.stream_ended is stream_ended_event
assert base_event.priority_updated is None
assert isinstance(base_event.stream_ended, h2.events.StreamEnded)
@pytest.mark.parametrize("request_headers", [example_request_headers, example_request_headers_bytes])
def test_response_received_related_nothing(self, frame_factory, request_headers) -> None:
"""
ResponseReceived is ordinarily related to no events.
"""
c = h2.connection.H2Connection()
c.initiate_connection()
c.send_headers(stream_id=1, headers=request_headers)
input_frame = frame_factory.build_headers_frame(
headers=self.example_response_headers,
)
events = c.receive_data(input_frame.serialize())
assert len(events) == 1
base_event = events[0]
assert base_event.stream_ended is None
assert base_event.priority_updated is None
@pytest.mark.parametrize("request_headers", [example_request_headers, example_request_headers_bytes])
def test_response_received_related_all(self, frame_factory, request_headers) -> None:
"""
ResponseReceived has two possible related events: PriorityUpdated and
StreamEnded, all fired when a single HEADERS frame is received.
"""
c = h2.connection.H2Connection()
c.initiate_connection()
c.send_headers(stream_id=1, headers=request_headers)
input_frame = frame_factory.build_headers_frame(
headers=self.example_response_headers,
flags=["END_STREAM", "PRIORITY"],
stream_weight=15,
depends_on=0,
exclusive=False,
)
events = c.receive_data(input_frame.serialize())
assert len(events) == 3
base_event = events[0]
other_events = events[1:]
assert base_event.stream_ended in other_events
assert isinstance(base_event.stream_ended, h2.events.StreamEnded)
assert base_event.priority_updated in other_events
assert isinstance(
base_event.priority_updated, h2.events.PriorityUpdated,
)
@pytest.mark.parametrize("request_headers", [example_request_headers, example_request_headers_bytes])
def test_response_received_related_priority(self, frame_factory, request_headers) -> None:
"""
ResponseReceived can be related to PriorityUpdated.
"""
c = h2.connection.H2Connection()
c.initiate_connection()
c.send_headers(stream_id=1, headers=request_headers)
input_frame = frame_factory.build_headers_frame(
headers=self.example_response_headers,
flags=["PRIORITY"],
stream_weight=15,
depends_on=0,
exclusive=False,
)
events = c.receive_data(input_frame.serialize())
assert len(events) == 2
base_event = events[0]
priority_updated_event = events[1]
assert base_event.priority_updated is priority_updated_event
assert base_event.stream_ended is None
assert isinstance(
base_event.priority_updated, h2.events.PriorityUpdated,
)
@pytest.mark.parametrize("request_headers", [example_request_headers, example_request_headers_bytes])
def test_response_received_related_stream_ended(self, frame_factory, request_headers) -> None:
"""
ResponseReceived can be related to StreamEnded.
"""
c = h2.connection.H2Connection()
c.initiate_connection()
c.send_headers(stream_id=1, headers=request_headers)
input_frame = frame_factory.build_headers_frame(
headers=self.example_response_headers,
flags=["END_STREAM"],
)
events = c.receive_data(input_frame.serialize())
assert len(events) == 2
base_event = events[0]
stream_ended_event = events[1]
assert base_event.stream_ended is stream_ended_event
assert base_event.priority_updated is None
assert isinstance(base_event.stream_ended, h2.events.StreamEnded)
@pytest.mark.parametrize("request_headers", [example_request_headers, example_request_headers_bytes])
def test_trailers_received_related_all(self, frame_factory, request_headers) -> None:
"""
TrailersReceived has two possible related events: PriorityUpdated and
StreamEnded, all fired when a single HEADERS frame is received.
"""
c = h2.connection.H2Connection()
c.initiate_connection()
c.send_headers(stream_id=1, headers=request_headers)
f = frame_factory.build_headers_frame(
headers=self.example_response_headers,
)
c.receive_data(f.serialize())
input_frame = frame_factory.build_headers_frame(
headers=self.example_trailers,
flags=["END_STREAM", "PRIORITY"],
stream_weight=15,
depends_on=0,
exclusive=False,
)
events = c.receive_data(input_frame.serialize())
assert len(events) == 3
base_event = events[0]
other_events = events[1:]
assert base_event.stream_ended in other_events
assert isinstance(base_event.stream_ended, h2.events.StreamEnded)
assert base_event.priority_updated in other_events
assert isinstance(
base_event.priority_updated, h2.events.PriorityUpdated,
)
@pytest.mark.parametrize("request_headers", [example_request_headers, example_request_headers_bytes])
def test_trailers_received_related_stream_ended(self, frame_factory, request_headers) -> None:
"""
TrailersReceived can be related to StreamEnded by itself.
"""
c = h2.connection.H2Connection()
c.initiate_connection()
c.send_headers(stream_id=1, headers=request_headers)
f = frame_factory.build_headers_frame(
headers=self.example_response_headers,
)
c.receive_data(f.serialize())
input_frame = frame_factory.build_headers_frame(
headers=self.example_trailers,
flags=["END_STREAM"],
)
events = c.receive_data(input_frame.serialize())
assert len(events) == 2
base_event = events[0]
stream_ended_event = events[1]
assert base_event.stream_ended is stream_ended_event
assert base_event.priority_updated is None
assert isinstance(base_event.stream_ended, h2.events.StreamEnded)
@pytest.mark.parametrize("request_headers", [example_request_headers, example_request_headers_bytes])
def test_informational_response_related_nothing(self, frame_factory, request_headers) -> None:
"""
InformationalResponseReceived in the standard case is related to
nothing.
"""
c = h2.connection.H2Connection()
c.initiate_connection()
c.send_headers(stream_id=1, headers=request_headers)
input_frame = frame_factory.build_headers_frame(
headers=self.informational_response_headers,
)
events = c.receive_data(input_frame.serialize())
assert len(events) == 1
base_event = events[0]
assert base_event.priority_updated is None
@pytest.mark.parametrize("request_headers", [example_request_headers, example_request_headers_bytes])
def test_informational_response_received_related_all(self, frame_factory, request_headers) -> None:
"""
InformationalResponseReceived has one possible related event:
PriorityUpdated, fired when a single HEADERS frame is received.
"""
c = h2.connection.H2Connection()
c.initiate_connection()
c.send_headers(stream_id=1, headers=request_headers)
input_frame = frame_factory.build_headers_frame(
headers=self.informational_response_headers,
flags=["PRIORITY"],
stream_weight=15,
depends_on=0,
exclusive=False,
)
events = c.receive_data(input_frame.serialize())
assert len(events) == 2
base_event = events[0]
priority_updated_event = events[1]
assert base_event.priority_updated is priority_updated_event
assert isinstance(
base_event.priority_updated, h2.events.PriorityUpdated,
)
@pytest.mark.parametrize("request_headers", [example_request_headers, example_request_headers_bytes])
def test_data_received_normally_relates_to_nothing(self, frame_factory, request_headers) -> None:
"""
A plain DATA frame leads to DataReceieved with no related events.
"""
c = h2.connection.H2Connection()
c.initiate_connection()
c.send_headers(stream_id=1, headers=request_headers)
f = frame_factory.build_headers_frame(
headers=self.example_response_headers,
)
c.receive_data(f.serialize())
input_frame = frame_factory.build_data_frame(
data=b"some data",
)
events = c.receive_data(input_frame.serialize())
assert len(events) == 1
base_event = events[0]
assert base_event.stream_ended is None
@pytest.mark.parametrize("request_headers", [example_request_headers, example_request_headers_bytes])
def test_data_received_related_stream_ended(self, frame_factory, request_headers) -> None:
"""
DataReceived can be related to StreamEnded by itself.
"""
c = h2.connection.H2Connection()
c.initiate_connection()
c.send_headers(stream_id=1, headers=request_headers)
f = frame_factory.build_headers_frame(
headers=self.example_response_headers,
)
c.receive_data(f.serialize())
input_frame = frame_factory.build_data_frame(
data=b"some data",
flags=["END_STREAM"],
)
events = c.receive_data(input_frame.serialize())
assert len(events) == 2
base_event = events[0]
stream_ended_event = events[1]
assert base_event.stream_ended is stream_ended_event
assert isinstance(base_event.stream_ended, h2.events.StreamEnded)
|
