def test_line_reader(self):
reader, writer = os.pipe()
try:
loop = EventLoop()
data = [
'Lorem ipsum\n',
'dolor\nsit\namet, ',
'consectetur',
' adipiscing ',
'elit.\nAliquam magna dolor, ', # no newline character at the end
]
# Reverse because list.pop() pops at the end.
data = data[::-1]
start = time.time()
@loop.add_timer(.01, repeat=True)
def slow_write():
if data:
d = data.pop()
assert os.write(writer, d) == len(d)
else:
loop.stop()
lines = []
loop.line_reader(reader, max_block_size=5)(lines.append)
loop.run()
assert lines == [
'Lorem ipsum\n',
'dolor\n',
'sit\n',
'amet, consectetur adipiscing elit.\n'
]
finally:
os.close(reader)
os.close(writer)
