test_sequential_executor.py

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import unittest
from unittest import mock

from airflow.executors.sequential_executor import SequentialExecutor


class TestSequentialExecutor(unittest.TestCase):

    @mock.patch('airflow.executors.sequential_executor.SequentialExecutor.sync')
    @mock.patch('airflow.executors.base_executor.BaseExecutor.trigger_tasks')
    @mock.patch('airflow.executors.base_executor.Stats.gauge')
    def test_gauge_executor_metrics(self, mock_stats_gauge, mock_trigger_tasks, mock_sync):
        executor = SequentialExecutor()
        executor.heartbeat()
        calls = [mock.call('executor.open_slots', mock.ANY),
                 mock.call('executor.queued_tasks', mock.ANY),
                 mock.call('executor.running_tasks', mock.ANY)]
        mock_stats_gauge.assert_has_calls(calls)