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from threading import Thread
import pytest
from streamlink.buffers import Buffer, RingBuffer
from tests.testutils.handshake import Handshake
class TestBuffer:
@pytest.fixture()
def buffer(self):
return Buffer()
def test_write(self, buffer: Buffer):
assert buffer.length == 0
assert not buffer.written_once
buffer.write(b"1" * 8192)
assert buffer.length == 8192
assert buffer.written_once
buffer.write(b"2" * 4096)
assert buffer.length == 8192 + 4096
assert buffer.written_once
def test_read(self, buffer: Buffer):
buffer.write(b"1" * 8192)
buffer.write(b"2" * 4096)
assert buffer.length == 8192 + 4096
assert buffer.read(4096) == b"1" * 4096
assert buffer.length == 8192
assert buffer.read(4096) == b"1" * 4096
assert buffer.length == 4096
assert buffer.read() == b"2" * 4096
assert buffer.length == 0
assert buffer.read(4096) == b""
assert buffer.read() == b""
assert buffer.length == 0
def test_readwrite(self, buffer: Buffer):
buffer.write(b"1" * 8192)
assert buffer.length == 8192
assert buffer.read(4096) == b"1" * 4096
assert buffer.length == 4096
buffer.write(b"2" * 4096)
assert buffer.length == 8192
assert buffer.read(1) == b"1"
assert buffer.length == 8191
assert buffer.read(4095) == b"1" * 4095
assert buffer.length == 4096
assert buffer.read(8192) == b"2" * 4096
assert buffer.length == 0
assert buffer.read(8192) == b""
assert buffer.read() == b""
assert buffer.length == 0
def test_close(self, buffer: Buffer):
assert not buffer.closed
assert not buffer.written_once
buffer.write(b"1" * 8192)
assert buffer.length == 8192
assert buffer.written_once
buffer.close()
assert buffer.closed
assert buffer.written_once
buffer.write(b"2" * 8192)
assert buffer.length == 8192
assert buffer.written_once
assert buffer.read() == b"1" * 8192
assert buffer.length == 0
@pytest.mark.parametrize(
"data",
[
bytearray(b"0123456789"),
memoryview(bytearray(b"0123456789")),
],
)
def test_reuse_input(self, buffer: Buffer, data: bytearray):
buffer.write(data)
data[:] = b"9876543210"
assert buffer.read() == b"0123456789", "Objects are reusable after write()"
def test_read_empty(self, buffer: Buffer):
with pytest.raises(StopIteration):
next(buffer._iterate_chunks(10))
class TestRingBuffer:
BUFFER_SIZE = 8192 * 4
@pytest.fixture()
def buffer(self):
return RingBuffer(size=self.BUFFER_SIZE)
def test_write(self, buffer: RingBuffer):
assert buffer.length == 0
buffer.write(b"1" * 8192)
assert buffer.length == 8192
buffer.write(b"2" * 4096)
assert buffer.length == 8192 + 4096
def test_read(self, buffer: RingBuffer):
buffer.write(b"1" * 8192)
buffer.write(b"2" * 4096)
assert buffer.length == 8192 + 4096
assert buffer.read(4096) == b"1" * 4096
assert buffer.length == 8192
assert buffer.read(4096) == b"1" * 4096
assert buffer.length == 4096
assert buffer.read() == b"2" * 4096
assert buffer.length == 0
assert buffer.read(block=False) == b""
assert buffer.length == 0
def test_read_timeout(self, buffer: RingBuffer):
with pytest.raises(OSError, match=r"^Read timeout$"):
buffer.read(timeout=0)
def test_read_after_close(self, buffer: RingBuffer):
buffer.write(b"1" * 8192)
buffer.close()
assert buffer.length == 8192
assert buffer.closed
assert buffer.read() == b"1" * 8192
def test_write_after_close(self, buffer: RingBuffer):
buffer.close()
buffer.write(b"1" * 8192)
assert buffer.length == 0
assert buffer.closed
def test_resize(self, buffer: RingBuffer):
assert buffer.buffer_size == self.BUFFER_SIZE
buffer.resize(self.BUFFER_SIZE * 2)
assert buffer.buffer_size == self.BUFFER_SIZE * 2
def test_free(self, buffer: RingBuffer):
half = self.BUFFER_SIZE >> 1
assert buffer.free == self.BUFFER_SIZE
buffer.write(b"1" * half)
assert buffer.free == half
buffer.write(b"1" * half)
assert buffer.free == 0
class TestThreadedRingBuffer:
TIMEOUT = 1
@pytest.fixture()
def handshake(self):
handshake = Handshake()
yield handshake
assert not handshake._context.error
@pytest.fixture()
def buffer(self):
buffer = RingBuffer(size=4)
assert not buffer.wait_used(0), "Buffer is not filled initially"
assert buffer.wait_free(0), "Buffer is free initially"
return buffer
def test_read_blocked(self, buffer: RingBuffer, handshake: Handshake):
def runner():
nonlocal read
with handshake():
read = buffer.read(block=True, timeout=self.TIMEOUT)
read = None
runnerthread = Thread(daemon=True, target=runner)
runnerthread.start()
buffer.write(b"0123")
assert buffer.wait_used(0), "Buffer has been filled"
assert not buffer.wait_free(0), "Buffer is not free anymore"
assert buffer.read(block=True, timeout=self.TIMEOUT) == b"0123", "Doesn't block reading if data is available"
assert not buffer.wait_used(0), "Buffer is not filled anymore after reading all data"
assert buffer.wait_free(0), "Buffer is free again after reading all data"
assert handshake.wait_ready(self.TIMEOUT)
assert read is None, "Runner thread hasn't read anything yet"
handshake.go()
buffer.write(b"4567")
assert handshake.wait_done(self.TIMEOUT)
assert read == b"4567", "Continues once data becomes available"
assert not buffer.wait_used(0), "Buffer is not filled anymore"
assert buffer.wait_free(0), "Buffer is free"
runnerthread.join(self.TIMEOUT)
assert not runnerthread.is_alive()
def test_write_blocked(self, buffer: RingBuffer, handshake: Handshake):
def runner():
with handshake():
buffer.write(b"01234567")
runnerthread = Thread(daemon=True, target=runner)
runnerthread.start()
handshake.go()
assert buffer.wait_used(self.TIMEOUT), "Has written first part"
assert not buffer.wait_free(0), "Buffer is not free"
assert buffer.read(block=True, timeout=self.TIMEOUT) == b"0123"
assert handshake.wait_done(self.TIMEOUT)
assert buffer.wait_used(self.TIMEOUT), "Has written second part"
assert not buffer.wait_free(0), "Buffer is still not free"
assert buffer.read(block=True, timeout=self.TIMEOUT) == b"4567"
assert not buffer.wait_used(0), "Buffer is not filled anymore"
assert buffer.wait_free(0), "Buffer is free again"
runnerthread.join(self.TIMEOUT)
assert not runnerthread.is_alive()
def test_write_blocked_close(self, buffer: RingBuffer, handshake: Handshake):
def runner():
with handshake():
buffer.write(b"01234567")
runnerthread = Thread(daemon=True, target=runner)
runnerthread.start()
handshake.go()
assert buffer.wait_used(self.TIMEOUT), "Has written first part"
assert not buffer.wait_free(0), "Buffer is not free"
buffer.close()
assert handshake.wait_done(self.TIMEOUT), "Has stopped writing"
assert buffer.read(block=True, timeout=self.TIMEOUT) == b"0123"
assert not buffer.wait_used(0), "Buffer is not filled"
assert buffer.wait_free(0), "Buffer is free"
runnerthread.join(self.TIMEOUT)
assert not runnerthread.is_alive()
|
