grpclib/tests/test_metadata.py

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import pytest
from multidict import MultiDict
from grpclib.metadata import Deadline
from grpclib.metadata import encode_timeout, decode_timeout
from grpclib.metadata import encode_metadata, decode_metadata
from grpclib.metadata import encode_grpc_message, decode_grpc_message
@pytest.mark.parametrize('value, expected', [
(100, '100S'),
(15, '15S'),
(7, '7000m'),
(0.02, '20m'),
(0.001, '1000u'),
(0.00002, '20u'),
(0.000001, '1000n'),
(0.00000002, '20n'),
])
def test_encode_timeout(value, expected):
assert encode_timeout(value) == expected
@pytest.mark.parametrize('value, expected', [
('5H', 5 * 3600),
('4M', 4 * 60),
('3S', 3),
('200m', pytest.approx(0.2)),
('100u', pytest.approx(0.0001)),
('50n', pytest.approx(0.00000005)),
])
def test_decode_timeout(value, expected):
assert decode_timeout(value) == expected
def test_deadline():
assert Deadline.from_timeout(1) < Deadline.from_timeout(2)
with pytest.raises(TypeError) as err:
Deadline.from_timeout(1) < 'invalid'
err.match('comparison is not supported between instances '
'of \'Deadline\' and \'str\'')
assert Deadline(_timestamp=1) == Deadline(_timestamp=1)
assert Deadline.from_timeout(1) != 'invalid'
@pytest.mark.parametrize('value, output', [
('а^2+б^2=ц^2', '%D0%B0^2+%D0%B1^2=%D1%86^2'),
])
def test_grpc_message_encoding(value, output):
assert encode_grpc_message(value) == output
encode_grpc_message(value).encode('ascii')
assert decode_grpc_message(output) == value
def test_grpc_message_decode_safe():
# 0xFF is invalid byte in utf-8:
# https://www.cl.cam.ac.uk/~mgk25/ucs/examples/UTF-8-test.txt
assert (decode_grpc_message('%FF^2+%FF^2=%FF^2')
== '\ufffd^2+\ufffd^2=\ufffd^2')
@pytest.mark.parametrize('value, output', [
({'regular': 'value'}, [('regular', 'value')]), # dict-like
([('regular', 'value')], [('regular', 'value')]), # list of pairs
({'binary-bin': b'value'}, [('binary-bin', 'dmFsdWU')])
])
def test_encode_metadata(value, output):
assert encode_metadata(value) == output
def test_encode_metadata_errors():
with pytest.raises(TypeError) as e1:
encode_metadata({'regular': b'invalid'})
e1.match('Invalid metadata value type, str expected')
with pytest.raises(TypeError) as e2:
encode_metadata({'binary-bin': 'invalid'})
e2.match('Invalid metadata value type, bytes expected')
@pytest.mark.parametrize('key', [
'grpc-internal',
'Upper-Case',
'invalid~character',
' spaces ',
'new-line\n',
])
def test_encode_metadata_invalid_key(key):
with pytest.raises(ValueError) as err:
encode_metadata({key: 'anything'})
err.match('Invalid metadata key')
@pytest.mark.parametrize('value', [
'new-line\n',
])
def test_encode_metadata_invalid_value(value):
with pytest.raises(ValueError) as err:
encode_metadata({'foo': value})
err.match('Invalid metadata value')
def test_decode_metadata_empty():
metadata = decode_metadata([
(':method', 'POST'),
('te', 'trailers'),
('content-type', 'application/grpc'),
('user-agent', 'Test'),
('grpc-timeout', '100m'),
])
assert metadata == MultiDict()
@pytest.mark.parametrize('key, value, expected', [
('regular', 'value', 'value'),
('binary-bin', 'dmFsdWU', b'value'),
])
def test_decode_metadata_regular(key, value, expected):
metadata = decode_metadata([
(':method', 'POST'),
('te', 'trailers'),
('content-type', 'application/grpc'),
('user-agent', 'Test'),
('grpc-timeout', '100m'),
(key, value),
])
assert metadata == MultiDict({key: expected})
assert type(metadata[key]) is type(expected)