frostfs-observability/metrics/desc_test.go
Dmitrii Stepanov 3c1b76ee51 [] metrics: Move from node
Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
2023-05-31 11:27:42 +03:00

64 lines
1.7 KiB
Go

package metrics
import (
"strings"
"testing"
"github.com/prometheus/client_golang/prometheus"
"github.com/stretchr/testify/require"
)
func TestDescribeAll(t *testing.T) {
const (
namespace = "my_ns"
subsystem = "mysub"
)
NewCounter(prometheus.CounterOpts{
Namespace: namespace,
Subsystem: subsystem,
Name: "my_counter",
})
labels := []string{"label1", "label2"}
NewGaugeVec(prometheus.GaugeOpts{
Namespace: namespace,
Subsystem: subsystem,
Name: "my_gauge",
}, labels)
constLabels := prometheus.Labels{
"const1": "abc",
"const2": "xyz",
}
NewCounter(prometheus.CounterOpts{
Namespace: namespace,
Subsystem: subsystem,
Name: "with_const_labels",
ConstLabels: constLabels,
})
descriptions := DescribeAll()
seen := make(map[string]bool)
for i := range descriptions {
if !strings.HasPrefix(descriptions[i].Name, namespace) {
continue
}
require.False(t, seen[descriptions[i].Name], "metric %s was seen twice", descriptions[i].Name)
seen[descriptions[i].Name] = true
switch descriptions[i].Name {
case prometheus.BuildFQName(namespace, subsystem, "my_counter"):
require.True(t, len(descriptions[i].VariableLabels) == 0)
case prometheus.BuildFQName(namespace, subsystem, "my_gauge"):
require.Equal(t, labels, descriptions[i].VariableLabels)
case prometheus.BuildFQName(namespace, subsystem, "with_const_labels"):
require.Equal(t, len(constLabels), len(descriptions[i].ConstantLabels))
require.Equal(t, constLabels, descriptions[i].ConstantLabels)
default:
require.FailNow(t, "unexpected metric name: %s", descriptions[i].Name)
}
}
require.Equal(t, 3, len(seen), "not all registered metrics were iterated over")
}