84 lines
2.5 KiB
Go
84 lines
2.5 KiB
Go
// Copyright The OpenTelemetry Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package loadscraper
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import (
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"context"
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"errors"
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"testing"
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"github.com/shirou/gopsutil/load"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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"go.uber.org/zap"
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"go.opentelemetry.io/collector/internal/dataold"
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"go.opentelemetry.io/collector/receiver/hostmetricsreceiver/internal"
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)
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func TestScrapeMetrics(t *testing.T) {
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type testCase struct {
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name string
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loadFunc func() (*load.AvgStat, error)
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expectedErr string
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}
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testCases := []testCase{
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{
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name: "Standard",
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},
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{
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name: "Load Error",
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loadFunc: func() (*load.AvgStat, error) { return nil, errors.New("err1") },
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expectedErr: "err1",
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},
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}
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for _, test := range testCases {
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t.Run(test.name, func(t *testing.T) {
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scraper := newLoadScraper(context.Background(), zap.NewNop(), &Config{})
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if test.loadFunc != nil {
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scraper.load = test.loadFunc
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}
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err := scraper.Initialize(context.Background())
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require.NoError(t, err, "Failed to initialize load scraper: %v", err)
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defer func() { assert.NoError(t, scraper.Close(context.Background())) }()
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metrics, err := scraper.ScrapeMetrics(context.Background())
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if test.expectedErr != "" {
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assert.EqualError(t, err, test.expectedErr)
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return
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}
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require.NoError(t, err, "Failed to scrape metrics: %v", err)
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// expect 3 metrics
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assert.Equal(t, 3, metrics.Len())
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// expect a single datapoint for 1m, 5m & 15m load metrics
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assertMetricHasSingleDatapoint(t, metrics.At(0), loadAvg1MDescriptor)
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assertMetricHasSingleDatapoint(t, metrics.At(1), loadAvg5mDescriptor)
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assertMetricHasSingleDatapoint(t, metrics.At(2), loadAvg15mDescriptor)
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internal.AssertSameTimeStampForAllMetrics(t, metrics)
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})
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}
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}
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func assertMetricHasSingleDatapoint(t *testing.T, metric dataold.Metric, descriptor dataold.MetricDescriptor) {
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internal.AssertDescriptorEqual(t, descriptor, metric.MetricDescriptor())
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assert.Equal(t, 1, metric.DoubleDataPoints().Len())
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}
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