def test__logs_non_json_output(self):
callback = Mock()
proto = JSONPerLineProtocol(callback=callback)
proto.connectionMade()
with TwistedLoggerFixture() as logger:
proto.outReceived(b"{\n")
self.assertThat(logger.output,
DocTestMatches("Failed to parse JSON: ..."))
def test__ignores_interspersed_zero_length_writes(self):
callback = Mock()
proto = JSONPerLineProtocol(callback=callback)
proto.connectionMade()
proto.outReceived(b"")
self.expectThat(callback, MockCallsMatch())
proto.outReceived(b"{}\n")
self.expectThat(callback, MockCallsMatch(call([{}])))
proto.outReceived(b"")
self.expectThat(callback, MockCallsMatch(call([{}])))
proto.outReceived(b"{}\n")
self.expectThat(callback, MockCallsMatch(call([{}]), call([{}])))
def test__parses_only_full_lines(self):
callback = Mock()
proto = JSONPerLineProtocol(callback=callback)
proto.connectionMade()
# Send an empty JSON dictionary using 3 separate writes.
proto.outReceived(b"{")
# No callback yet...
self.expectThat(callback, MockCallsMatch())
proto.outReceived(b"}")
# Still no callback...
self.expectThat(callback, MockCallsMatch())
proto.outReceived(b"\n")
# After a newline, we expect the JSON to be parsed and the callback
# to receive an empty Python dictionary (which corresponds to the JSON
# that was sent.)
self.expectThat(callback, MockCallsMatch(call([{}])))