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import unittest |
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import mock |
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from kafka_influxdb.reader import kafka_reader |
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from kafka.common import ConnectionError |
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from kafka.common import Message |
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from kafka_influxdb.tests.helpers.timeout import timeout |
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8
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9
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class TestKafkaReader(unittest.TestCase): |
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def setUp(self): |
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self.host = "myhost" |
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self.port = 1234 |
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self.group = "mygroup" |
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self.topic = "mytopic" |
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self.reconnect_wait_time = 0.01 |
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self.reader = kafka_reader.KafkaReader(self.host, |
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self.port, |
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self.group, |
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self.topic, |
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self.reconnect_wait_time) |
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self.reader.consumer = mock.MagicMock() |
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def sample_messages(self, payload, count): |
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return count * [Message(0, 0, None, payload)], count * [payload] |
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def test_handle_read(self): |
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sample_messages, extracted_messages = self.sample_messages("hello", 3) |
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self.reader.consumer.__iter__.return_value = sample_messages |
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self.reader._connect = mock.MagicMock() |
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received_messages = list(self.reader._handle_read()) |
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self.assertEqual(received_messages, extracted_messages) |
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@timeout(0.1) |
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def test_reconnect(self): |
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""" |
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In case of a connection error, the client should reconnect and |
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start receiving messages again without interruption |
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""" |
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sample_messages1, extracted_messages1 = self.sample_messages("hi", 3) |
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sample_messages2, extracted_messages2 = self.sample_messages("world", 3) |
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sample_messages = sample_messages1 + [ConnectionError] + sample_messages2 |
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self.reader.consumer.__iter__.return_value = sample_messages |
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received_messages = list(self.receive_messages()) |
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self.assertEqual(received_messages, extracted_messages1 + extracted_messages2) |
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def receive_messages(self): |
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for message in self.reader.read(): |
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yield message |
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mre /
kafka-influxdb
