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| -rw-r--r-- | tests/test_metrics.py | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/tests/test_metrics.py b/tests/test_metrics.py new file mode 100644 index 0000000000..17897711a1 --- /dev/null +++ b/tests/test_metrics.py @@ -0,0 +1,81 @@ +# -*- coding: utf-8 -*- +# Copyright 2018 New Vector Ltd +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + + +from synapse.metrics import InFlightGauge + +from tests import unittest + + +class TestMauLimit(unittest.TestCase): + def test_basic(self): + gauge = InFlightGauge( + "test1", "", + labels=["test_label"], + sub_metrics=["foo", "bar"], + ) + + def handle1(metrics): + metrics.foo += 2 + metrics.bar = max(metrics.bar, 5) + + def handle2(metrics): + metrics.foo += 3 + metrics.bar = max(metrics.bar, 7) + + gauge.register(("key1",), handle1) + + self.assert_dict({ + "test1_total": {("key1",): 1}, + "test1_foo": {("key1",): 2}, + "test1_bar": {("key1",): 5}, + }, self.get_metrics_from_gauge(gauge)) + + gauge.unregister(("key1",), handle1) + + self.assert_dict({ + "test1_total": {("key1",): 0}, + "test1_foo": {("key1",): 0}, + "test1_bar": {("key1",): 0}, + }, self.get_metrics_from_gauge(gauge)) + + gauge.register(("key1",), handle1) + gauge.register(("key2",), handle2) + + self.assert_dict({ + "test1_total": {("key1",): 1, ("key2",): 1}, + "test1_foo": {("key1",): 2, ("key2",): 3}, + "test1_bar": {("key1",): 5, ("key2",): 7}, + }, self.get_metrics_from_gauge(gauge)) + + gauge.unregister(("key2",), handle2) + gauge.register(("key1",), handle2) + + self.assert_dict({ + "test1_total": {("key1",): 2, ("key2",): 0}, + "test1_foo": {("key1",): 5, ("key2",): 0}, + "test1_bar": {("key1",): 7, ("key2",): 0}, + }, self.get_metrics_from_gauge(gauge)) + + def get_metrics_from_gauge(self, gauge): + results = {} + + for r in gauge.collect(): + results[r.name] = { + tuple(labels[x] for x in gauge.labels): value + for _, labels, value in r.samples + } + + return results |