mirror of
https://github.com/kubernetes-sigs/external-dns.git
synced 2025-08-06 09:36:58 +02:00
114 lines
3.1 KiB
Go
114 lines
3.1 KiB
Go
/*
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Copyright 2025 The Kubernetes Authors.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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*/
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package metrics
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import (
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"testing"
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"github.com/prometheus/client_golang/prometheus"
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log "github.com/sirupsen/logrus"
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"github.com/stretchr/testify/assert"
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"sigs.k8s.io/external-dns/internal/testutils"
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)
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type MockMetric struct {
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FQDN string
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}
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func (m *MockMetric) Get() *Metric {
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return &Metric{FQDN: m.FQDN}
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}
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func TestMustRegister(t *testing.T) {
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tests := []struct {
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name string
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metrics []IMetric
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expected int
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}{
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{
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name: "single metric",
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metrics: []IMetric{
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NewCounterWithOpts(prometheus.CounterOpts{Name: "test_counter_1"}),
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},
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expected: 1,
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},
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{
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name: "two metrics",
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metrics: []IMetric{
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NewGaugeWithOpts(prometheus.GaugeOpts{Name: "test_gauge_2", Subsystem: "test"}),
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NewCounterWithOpts(prometheus.CounterOpts{Name: "test_counter_2", Subsystem: "app"}),
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},
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expected: 2,
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},
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{
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name: "mix of metrics",
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metrics: []IMetric{
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NewGaugeWithOpts(prometheus.GaugeOpts{Name: "test_gauge_3"}),
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NewCounterWithOpts(prometheus.CounterOpts{Name: "test_counter_3"}),
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NewCounterVecWithOpts(prometheus.CounterOpts{Name: "test_counter_vec_3"}, []string{"label"}),
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NewGaugedVectorOpts(prometheus.GaugeOpts{Name: "test_gauge_v_3"}, []string{"label"}),
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NewSummaryVecWithOpts(prometheus.SummaryOpts{Name: "test_summary_v_3"}, []string{"label"}),
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},
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expected: 5,
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},
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{
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name: "unsupported metric",
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metrics: []IMetric{
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&MockMetric{FQDN: "unsupported_metric"},
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},
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expected: 0,
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},
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{
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name: "skip if metric exists",
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metrics: []IMetric{
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NewGaugeWithOpts(prometheus.GaugeOpts{Name: "existing_metric"}),
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NewGaugeWithOpts(prometheus.GaugeOpts{Name: "existing_metric"}),
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},
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expected: 1,
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},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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registry := NewMetricsRegister()
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for _, m := range tt.metrics {
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registry.MustRegister(m)
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}
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assert.Len(t, registry.Metrics, tt.expected)
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})
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}
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}
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func TestUnsupportedMetricWarning(t *testing.T) {
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hook := testutils.LogsUnderTestWithLogLevel(log.WarnLevel, t)
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registry := NewMetricsRegister()
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mockUnsupported := &MockMetric{FQDN: "unsupported_metric"}
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registry.MustRegister(mockUnsupported)
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assert.NotContains(t, registry.mName, "unsupported_metric")
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testutils.TestHelperLogContains("Unsupported metric type: *metrics.MockMetric", hook, t)
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}
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func TestNewMetricsRegister(t *testing.T) {
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registry := NewMetricsRegister()
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assert.NotNil(t, registry)
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assert.NotNil(t, registry.Registerer)
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assert.Empty(t, registry.Metrics)
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assert.Empty(t, registry.mName)
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}
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