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53 changes: 53 additions & 0 deletions
53
service/internal/proctelemetry/process_telemetry_linux_test.go
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,53 @@ | ||
| // Copyright The OpenTelemetry Authors | ||
| // SPDX-License-Identifier: Apache-2.0 | ||
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| //go:build linux | ||
| // +build linux | ||
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| package proctelemetry | ||
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| import ( | ||
| "testing" | ||
| "time" | ||
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| "github.com/stretchr/testify/assert" | ||
| "github.com/stretchr/testify/require" | ||
| "go.opencensus.io/metric" | ||
| "go.opentelemetry.io/otel/metric/noop" | ||
| ) | ||
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| func TestOCProcessTelemetryWithHostProc(t *testing.T) { | ||
| ocRegistry := metric.NewRegistry() | ||
| // Make the sure the environment variable value is not used. | ||
| t.Setenv("HOST_PROC", "foo/bar") | ||
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| require.NoError(t, RegisterProcessMetrics(ocRegistry, noop.NewMeterProvider(), false, 0, "/proc")) | ||
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| // Check that the metrics are actually filled. | ||
| time.Sleep(200 * time.Millisecond) | ||
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| metrics := ocRegistry.Read() | ||
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| for _, metricName := range expectedMetrics { | ||
| m := findMetric(metrics, metricName) | ||
| require.NotNil(t, m) | ||
| require.Len(t, m.TimeSeries, 1) | ||
| ts := m.TimeSeries[0] | ||
| assert.Len(t, ts.LabelValues, 0) | ||
| require.Len(t, ts.Points, 1) | ||
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| var value float64 | ||
| if metricName == "process/uptime" || metricName == "process/cpu_seconds" { | ||
| value = ts.Points[0].Value.(float64) | ||
| } else { | ||
| value = float64(ts.Points[0].Value.(int64)) | ||
| } | ||
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| if metricName == "process/uptime" || metricName == "process/cpu_seconds" { | ||
| // This likely will still be zero when running the test. | ||
| assert.GreaterOrEqual(t, value, float64(0), metricName) | ||
| continue | ||
| } | ||
| assert.Greater(t, value, float64(0), metricName) | ||
| } | ||
| } |
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