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# -*- coding: utf-8 -*-
"""Define set of helper functions for the dataframe."""
import unittest
import warnings
from unittest import mock
from influxdb.influxdb08 import SeriesHelper, InfluxDBClient
from requests.exceptions import ConnectionError
class TestSeriesHelper(unittest.TestCase):
"""Define the SeriesHelper for test."""
@classmethod
def setUpClass(cls):
"""Set up an instance of the TestSerisHelper object."""
super(TestSeriesHelper, cls).setUpClass()
TestSeriesHelper.client = InfluxDBClient(
'host',
8086,
'username',
'password',
'database'
)
class MySeriesHelper(SeriesHelper):
"""Define a subset SeriesHelper instance."""
class Meta:
"""Define metadata for the TestSeriesHelper object."""
client = TestSeriesHelper.client
series_name = 'events.stats.{server_name}'
fields = ['time', 'server_name']
bulk_size = 5
autocommit = True
TestSeriesHelper.MySeriesHelper = MySeriesHelper
def test_auto_commit(self):
"""Test that write_points called after the right number of events."""
class AutoCommitTest(SeriesHelper):
"""Define an instance of SeriesHelper for AutoCommit test."""
class Meta:
"""Define metadata AutoCommitTest object."""
series_name = 'events.stats.{server_name}'
fields = ['time', 'server_name']
bulk_size = 5
client = InfluxDBClient()
autocommit = True
fake_write_points = mock.MagicMock()
AutoCommitTest(server_name='us.east-1', time=159)
AutoCommitTest._client.write_points = fake_write_points
AutoCommitTest(server_name='us.east-1', time=158)
AutoCommitTest(server_name='us.east-1', time=157)
AutoCommitTest(server_name='us.east-1', time=156)
self.assertFalse(fake_write_points.called)
AutoCommitTest(server_name='us.east-1', time=3443)
self.assertTrue(fake_write_points.called)
def testSingleSeriesName(self):
"""Test JSON conversion when there is only one series name."""
TestSeriesHelper.MySeriesHelper(server_name='us.east-1', time=159)
TestSeriesHelper.MySeriesHelper(server_name='us.east-1', time=158)
TestSeriesHelper.MySeriesHelper(server_name='us.east-1', time=157)
TestSeriesHelper.MySeriesHelper(server_name='us.east-1', time=156)
expectation = [{'points': [[159, 'us.east-1'],
[158, 'us.east-1'],
[157, 'us.east-1'],
[156, 'us.east-1']],
'name': 'events.stats.us.east-1',
'columns': ['time', 'server_name']}]
rcvd = TestSeriesHelper.MySeriesHelper._json_body_()
self.assertTrue(all([el in expectation for el in rcvd]) and
all([el in rcvd for el in expectation]),
'Invalid JSON body of time series returned from '
'_json_body_ for one series name: {0}.'.format(rcvd))
TestSeriesHelper.MySeriesHelper._reset_()
self.assertEqual(
TestSeriesHelper.MySeriesHelper._json_body_(),
[],
'Resetting helper did not empty datapoints.')
def testSeveralSeriesNames(self):
"""Test JSON conversion when there is only one series name."""
TestSeriesHelper.MySeriesHelper(server_name='us.east-1', time=159)
TestSeriesHelper.MySeriesHelper(server_name='fr.paris-10', time=158)
TestSeriesHelper.MySeriesHelper(server_name='lu.lux', time=157)
TestSeriesHelper.MySeriesHelper(server_name='uk.london', time=156)
expectation = [{'points': [[157, 'lu.lux']],
'name': 'events.stats.lu.lux',
'columns': ['time', 'server_name']},
{'points': [[156, 'uk.london']],
'name': 'events.stats.uk.london',
'columns': ['time', 'server_name']},
{'points': [[158, 'fr.paris-10']],
'name': 'events.stats.fr.paris-10',
'columns': ['time', 'server_name']},
{'points': [[159, 'us.east-1']],
'name': 'events.stats.us.east-1',
'columns': ['time', 'server_name']}]
rcvd = TestSeriesHelper.MySeriesHelper._json_body_()
self.assertTrue(all([el in expectation for el in rcvd]) and
all([el in rcvd for el in expectation]),
'Invalid JSON body of time series returned from '
'_json_body_ for several series names: {0}.'
.format(rcvd))
TestSeriesHelper.MySeriesHelper._reset_()
self.assertEqual(
TestSeriesHelper.MySeriesHelper._json_body_(),
[],
'Resetting helper did not empty datapoints.')
def testInvalidHelpers(self):
"""Test errors in invalid helpers."""
class MissingMeta(SeriesHelper):
"""Define SeriesHelper object for MissingMeta test."""
pass
class MissingClient(SeriesHelper):
"""Define SeriesHelper object for MissingClient test."""
class Meta:
"""Define metadata for MissingClient object."""
series_name = 'events.stats.{server_name}'
fields = ['time', 'server_name']
autocommit = True
class MissingSeriesName(SeriesHelper):
"""Define SeriesHelper object for MissingSeries test."""
class Meta:
"""Define metadata for MissingSeriesName object."""
fields = ['time', 'server_name']
class MissingFields(SeriesHelper):
"""Define SeriesHelper for MissingFields test."""
class Meta:
"""Define metadata for MissingFields object."""
series_name = 'events.stats.{server_name}'
for cls in [MissingMeta, MissingClient, MissingFields,
MissingSeriesName]:
self.assertRaises(
AttributeError, cls, **{'time': 159,
'server_name': 'us.east-1'})
def testWarnBulkSizeZero(self):
"""Test warning for an invalid bulk size."""
class WarnBulkSizeZero(SeriesHelper):
"""Define SeriesHelper for WarnBulkSizeZero test."""
class Meta:
"""Define metadata for WarnBulkSizeZero object."""
client = TestSeriesHelper.client
series_name = 'events.stats.{server_name}'
fields = ['time', 'server_name']
bulk_size = 0
autocommit = True
with warnings.catch_warnings(record=True) as rec_warnings:
warnings.simplefilter("always")
# Server defined in the client is invalid, we're testing
# the warning only.
with self.assertRaises(ConnectionError):
WarnBulkSizeZero(time=159, server_name='us.east-1')
self.assertGreaterEqual(
len(rec_warnings), 1,
'{0} call should have generated one warning.'
'Actual generated warnings: {1}'.format(
WarnBulkSizeZero, '\n'.join(map(str, rec_warnings))))
expected_msg = (
'Definition of bulk_size in WarnBulkSizeZero forced to 1, '
'was less than 1.')
self.assertIn(expected_msg, list(w.message.args[0]
for w in rec_warnings),
'Warning message did not contain "forced to 1".')
def testWarnBulkSizeNoEffect(self):
"""Test warning for a set bulk size but autocommit False."""
class WarnBulkSizeNoEffect(SeriesHelper):
"""Define SeriesHelper for WarnBulkSizeNoEffect object."""
class Meta:
"""Define metadata for WarnBulkSizeNoEffect object."""
series_name = 'events.stats.{server_name}'
fields = ['time', 'server_name']
bulk_size = 5
autocommit = False
with warnings.catch_warnings(record=True) as rec_warnings:
warnings.simplefilter("always")
WarnBulkSizeNoEffect(time=159, server_name='us.east-1')
self.assertGreaterEqual(
len(rec_warnings), 1,
'{0} call should have generated one warning.'
'Actual generated warnings: {1}'.format(
WarnBulkSizeNoEffect, '\n'.join(map(str, rec_warnings))))
expected_msg = (
'Definition of bulk_size in WarnBulkSizeNoEffect has no affect '
'because autocommit is false.')
self.assertIn(expected_msg, list(w.message.args[0]
for w in rec_warnings),
'Warning message did not contain the expected_msg.')
if __name__ == '__main__':
unittest.main()
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