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#!/usr/bin/env vpython3
# Copyright 2024 The Chromium Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""File for testing metric.py."""
import unittest
from average import Average
from count import Count
from metric import Metric
class MetricTest(unittest.TestCase):
"""Test metric.py."""
def test_no_metric(self) -> None:
m = Metric()
self.assertFalse(m.dump().metrics)
def test_multiple_metrics(self) -> None:
m = Metric()
m.register(Average("a"))
m.register(Average("b"))
m.register(Count("c"))
self.assertEqual(len(m.dump().metrics), 3)
self.assertEqual(set([i.name for i in m.dump().metrics]),
set(["a", "b", "c"]))
def test_tags(self) -> None:
m = Metric()
m.register(Count("c"))
m.tag("t1", "t2")
m.tag("t3")
self.assertEqual(len(m.dump().metrics), 4)
self.assertEqual(set([i.name for i in m.dump().metrics]),
set(["c", "c@t1", "c@t2", "c@t3"]))
if __name__ == '__main__':
unittest.main()