async def test_read_cache_inactive_plugin(mocker, simple_plugin,
humidity_reading):
# Mock test data
simple_plugin.active = False
mocker.patch.dict('synse_server.plugin.PluginManager.plugins', {
'123': simple_plugin,
})
def patchreadcache(*args, **kwargs):
yield humidity_reading
mock_read = mocker.patch(
'synse_grpc.client.PluginClientV3.read_cache',
side_effect=patchreadcache,
)
# --- Test case -----------------------------
resp = [
r async for r in cmd.read_cache('2019-04-22T13:30:00Z',
'2019-04-22T13:35:00Z')
]
assert len(resp) == 0 # no readings since plugin not active
assert simple_plugin.active is False
mock_read.assert_not_called()
async def response_streamer(response):
# Due to how streamed responses are handled, an exception here won't
# end up surfacing to the user through Synse's custom error handler
# and instead appear to create an opaque error relating to an invalid
# character in the chunk header. Instead of surfacing that error, we
# just log it and move on.
try:
async for reading in cmd.read_cache(start, end):
await response.write(ujson.dumps(reading) + '\n')
except Exception:
logger.exception('failure when streaming cached readings')
async def test_read_cache_no_plugins(mocker):
# Mock test data
mocker.patch.dict('synse_server.plugin.PluginManager.plugins', {})
mock_read = mocker.patch('synse_grpc.client.PluginClientV3.read_cache', )
# --- Test case -----------------------------
res = [r async for r in cmd.read_cache()]
assert len(res) == 0
mock_read.assert_not_called()
async def test_read_cache_ok(mocker, simple_plugin, humidity_reading):
# Mock test data
mocker.patch.dict('synse_server.plugin.PluginManager.plugins', {
'123': simple_plugin,
})
def patchreadcache(*args, **kwargs):
data = [
humidity_reading,
humidity_reading,
humidity_reading,
]
for d in data:
yield d
mock_read = mocker.patch(
'synse_grpc.client.PluginClientV3.read_cache',
side_effect=patchreadcache,
)
# --- Test case -----------------------------
resp = [
r async for r in cmd.read_cache('2019-04-22T13:30:00Z',
'2019-04-22T13:35:00Z')
]
assert len(resp) == 3
for reading in resp:
assert reading == {
# from humidity_reading fixture
'device': 'bbb',
'timestamp': '2019-04-22T13:30:00Z',
'type': 'humidity',
'device_type': 'humidity',
'unit': {
'name': 'percent',
'symbol': '%',
},
'value': 42.0,
'context': {},
}
assert simple_plugin.active is True
mock_read.assert_called_once()
mock_read.assert_called_with(start='2019-04-22T13:30:00Z',
end='2019-04-22T13:35:00Z')
async def test_read_cache_fails_read_cache(mocker, simple_plugin):
# Mock test data
mocker.patch.dict('synse_server.plugin.PluginManager.plugins', {
'123': simple_plugin,
})
mock_read = mocker.patch(
'synse_grpc.client.PluginClientV3.read_cache',
side_effect=ValueError(),
)
# --- Test case -----------------------------
with pytest.raises(errors.ServerError):
_ = [r async for r in cmd.read_cache()]
assert simple_plugin.active is False
mock_read.assert_called_once()
mock_read.assert_called_with(start=None, end=None)