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Add metrics tests.

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This commit is contained in:
Joachim Bauch 2026-01-12 14:58:48 +01:00
commit 8293de75b1
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2 changed files with 63 additions and 28 deletions
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30
metrics/test/metrics.go
View file

@ -22,9 +22,6 @@
package test
import (
"fmt"
"runtime"
"strings"
"testing"
"github.com/prometheus/client_golang/prometheus"
@ -58,7 +55,7 @@ func AssertCollectorChangeBy(t *testing.T, collector prometheus.Collector, delta
})
}
func CheckStatsValue(t *testing.T, collector prometheus.Collector, value float64) { // nolint:unused
func CheckStatsValue(t *testing.T, collector prometheus.Collector, value float64) {
// Make sure test is not executed with "t.Parallel()"
t.Setenv("PARALLEL_CHECK", "1")
@ -66,30 +63,7 @@ func CheckStatsValue(t *testing.T, collector prometheus.Collector, value float64
collector.Describe(ch)
desc := <-ch
v := testutil.ToFloat64(collector)
if v != value {
assert := assert.New(t)
pc := make([]uintptr, 10)
n := runtime.Callers(2, pc)
if n == 0 {
assert.InDelta(value, v, 0.0001, "failed for %s", desc)
return
}
pc = pc[:n]
frames := runtime.CallersFrames(pc)
var stack strings.Builder
for {
frame, more := frames.Next()
if !strings.Contains(frame.File, "nextcloud-spreed-signaling") {
break
}
fmt.Fprintf(&stack, "%s:%d\n", frame.File, frame.Line)
if !more {
break
}
}
assert.InDelta(value, v, 0.0001, "Unexpected value for %s at\n%s", desc, stack.String())
}
assert.InDelta(t, value, v, 0.0001, "unexpected value for %s", desc)
}
func CollectAndLint(t *testing.T, collectors ...prometheus.Collector) {

61
metrics/test/metrics_test.go Normal file
View file

@ -0,0 +1,61 @@
/**
* Standalone signaling server for the Nextcloud Spreed app.
* Copyright (C) 2026 struktur AG
*
* @author Joachim Bauch <bauch@struktur.de>
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package test
import (
"testing"
"github.com/prometheus/client_golang/prometheus"
)
func TestMetrics(t *testing.T) { // nolint:paralleltest
gauge := prometheus.NewGauge(prometheus.GaugeOpts{
Namespace: "signaling",
Subsystem: "metrics_tests",
Name: "value",
Help: "Current value for the metrics tests",
})
CollectAndLint(t, gauge)
CheckStatsValue(t, gauge, 0)
gauge.Inc()
CheckStatsValue(t, gauge, 1)
ResetStatsValue(t, gauge)
CheckStatsValue(t, gauge, 0)
}
func TestAssertCollectorChangeBy(t *testing.T) {
t.Parallel()
gauge := prometheus.NewGauge(prometheus.GaugeOpts{
Namespace: "signaling",
Subsystem: "metrics_tests",
Name: "value",
Help: "Current value for the metrics tests",
})
AssertCollectorChangeBy(t, gauge, 1)
gauge.Inc()
}