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// Copyright 2018 The Prometheus Authors
// 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.
package prometheus
import (
"fmt"
"testing"
"time"
dto "github.com/prometheus/client_model/go"
"google.golang.org/protobuf/types/known/timestamppb"
)
func TestNewConstMetricInvalidLabelValues(t *testing.T) {
testCases := []struct {
desc string
labels Labels
}{
{
desc: "non utf8 label value",
labels: Labels{"a": "\xFF"},
},
{
desc: "not enough label values",
labels: Labels{},
},
{
desc: "too many label values",
labels: Labels{"a": "1", "b": "2"},
},
}
for _, test := range testCases {
metricDesc := NewDesc(
"sample_value",
"sample value",
[]string{"a"},
Labels{},
)
expectPanic(t, func() {
MustNewConstMetric(metricDesc, CounterValue, 0.3, "\xFF")
}, fmt.Sprintf("WithLabelValues: expected panic because: %s", test.desc))
if _, err := NewConstMetric(metricDesc, CounterValue, 0.3, "\xFF"); err == nil {
t.Errorf("NewConstMetric: expected error because: %s", test.desc)
}
}
}
func TestNewConstMetricWithCreatedTimestamp(t *testing.T) {
now := time.Now()
for _, tcase := range []struct {
desc string
metricType ValueType
createdTimestamp time.Time
expecErr bool
expectedCt *timestamppb.Timestamp
}{
{
desc: "gauge with CT",
metricType: GaugeValue,
createdTimestamp: now,
expecErr: true,
expectedCt: nil,
},
{
desc: "counter with CT",
metricType: CounterValue,
createdTimestamp: now,
expecErr: false,
expectedCt: timestamppb.New(now),
},
} {
t.Run(tcase.desc, func(t *testing.T) {
metricDesc := NewDesc(
"sample_value",
"sample value",
nil,
nil,
)
m, err := NewConstMetricWithCreatedTimestamp(metricDesc, tcase.metricType, float64(1), tcase.createdTimestamp)
if tcase.expecErr && err == nil {
t.Errorf("Expected error is test %s, got no err", tcase.desc)
}
if !tcase.expecErr && err != nil {
t.Errorf("Didn't expect error in test %s, got %s", tcase.desc, err.Error())
}
if tcase.expectedCt != nil {
var metric dto.Metric
m.Write(&metric)
if metric.Counter.CreatedTimestamp.AsTime() != tcase.expectedCt.AsTime() {
t.Errorf("Expected timestamp %v, got %v", tcase.expectedCt, &metric.Counter.CreatedTimestamp)
}
}
})
}
}
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