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from tests import unittest
import mock
from botocore.history import HistoryRecorder
from botocore.history import BaseHistoryHandler
from botocore.history import get_global_history_recorder
class TerribleError(Exception):
pass
class ExceptionThrowingHandler(BaseHistoryHandler):
def emit(self, event_type, payload, source):
raise TerribleError('Bad behaving handler')
class TestHistoryRecorder(unittest.TestCase):
def test_can_attach_and_call_handler_emit(self):
mock_handler = mock.Mock(spec=BaseHistoryHandler)
recorder = HistoryRecorder()
recorder.enable()
recorder.add_handler(mock_handler)
recorder.record('foo', 'bar', source='source')
mock_handler.emit.assert_called_with('foo', 'bar', 'source')
def test_can_call_multiple_handlers(self):
first_handler = mock.Mock(spec=BaseHistoryHandler)
second_handler = mock.Mock(spec=BaseHistoryHandler)
recorder = HistoryRecorder()
recorder.enable()
recorder.add_handler(first_handler)
recorder.add_handler(second_handler)
recorder.record('foo', 'bar', source='source')
first_handler.emit.assert_called_with('foo', 'bar', 'source')
second_handler.emit.assert_called_with('foo', 'bar', 'source')
def test_does_use_botocore_source_by_default(self):
mock_handler = mock.Mock(spec=BaseHistoryHandler)
recorder = HistoryRecorder()
recorder.enable()
recorder.add_handler(mock_handler)
recorder.record('foo', 'bar')
mock_handler.emit.assert_called_with('foo', 'bar', 'BOTOCORE')
def test_does_not_call_handlers_when_never_enabled(self):
mock_handler = mock.Mock(spec=BaseHistoryHandler)
recorder = HistoryRecorder()
recorder.add_handler(mock_handler)
recorder.record('foo', 'bar')
mock_handler.emit.assert_not_called()
def test_does_not_call_handlers_when_disabled(self):
mock_handler = mock.Mock(spec=BaseHistoryHandler)
recorder = HistoryRecorder()
recorder.enable()
recorder.disable()
recorder.add_handler(mock_handler)
recorder.record('foo', 'bar')
mock_handler.emit.assert_not_called()
def test_can_ignore_handler_exceptions(self):
mock_handler = mock.Mock(spec=BaseHistoryHandler)
recorder = HistoryRecorder()
recorder.enable()
bad_handler = ExceptionThrowingHandler()
recorder.add_handler(bad_handler)
recorder.add_handler(mock_handler)
try:
recorder.record('foo', 'bar')
except TerribleError:
self.fail('Should not have raised a TerribleError')
mock_handler.emit.assert_called_with('foo', 'bar', 'BOTOCORE')
class TestGetHistoryRecorder(unittest.TestCase):
def test_can_get_history_recorder(self):
recorder = get_global_history_recorder()
self.assertTrue(isinstance(recorder, HistoryRecorder))
def test_does_reuse_history_recorder(self):
recorder_1 = get_global_history_recorder()
recorder_2 = get_global_history_recorder()
self.assertIs(recorder_1, recorder_2)
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