1223982cc4
* Using Prometheus testutil in Prometheus tests Signed-off-by: Maciej "Iwan" Iwanowski <maciej.iwanowski@intel.com>
107 lines
3.2 KiB
Go
107 lines
3.2 KiB
Go
// Copyright 2014 Google Inc. All Rights Reserved.
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//
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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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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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package metrics
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import (
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"os"
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"testing"
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"time"
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"github.com/google/cadvisor/container"
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info "github.com/google/cadvisor/info/v1"
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"github.com/prometheus/client_golang/prometheus"
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"github.com/prometheus/client_golang/prometheus/testutil"
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"github.com/stretchr/testify/assert"
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clock "k8s.io/utils/clock/testing"
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)
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var now = clock.NewFakeClock(time.Unix(1395066363, 0))
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func TestPrometheusCollector(t *testing.T) {
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c := NewPrometheusCollector(testSubcontainersInfoProvider{}, func(container *info.ContainerInfo) map[string]string {
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s := DefaultContainerLabels(container)
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s["zone.name"] = "hello"
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return s
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}, container.AllMetrics, now)
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reg := prometheus.NewRegistry()
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reg.MustRegister(c)
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testPrometheusCollector(t, reg, "testdata/prometheus_metrics")
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}
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func testPrometheusCollector(t *testing.T, gatherer prometheus.Gatherer, metricsFile string) {
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wantMetrics, err := os.Open(metricsFile)
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if err != nil {
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t.Fatalf("unable to read input test file %s", metricsFile)
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}
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err = testutil.GatherAndCompare(gatherer, wantMetrics)
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if err != nil {
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t.Fatalf("Metric comparison failed: %s", err)
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}
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}
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func TestPrometheusCollector_scrapeFailure(t *testing.T) {
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provider := &erroringSubcontainersInfoProvider{
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successfulProvider: testSubcontainersInfoProvider{},
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shouldFail: true,
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}
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c := NewPrometheusCollector(provider, func(container *info.ContainerInfo) map[string]string {
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s := DefaultContainerLabels(container)
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s["zone.name"] = "hello"
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return s
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}, container.AllMetrics, now)
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reg := prometheus.NewRegistry()
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reg.MustRegister(c)
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testPrometheusCollector(t, reg, "testdata/prometheus_metrics_failure")
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provider.shouldFail = false
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testPrometheusCollector(t, reg, "testdata/prometheus_metrics")
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}
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func TestNewPrometheusCollectorWithPerf(t *testing.T) {
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c := NewPrometheusCollector(mockInfoProvider{}, mockLabelFunc, container.MetricSet{container.PerfMetrics: struct{}{}}, now)
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assert.Len(t, c.containerMetrics, 3)
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names := []string{}
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for _, m := range c.containerMetrics {
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names = append(names, m.name)
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}
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assert.Contains(t, names, "container_last_seen")
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assert.Contains(t, names, "container_perf_metric")
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assert.Contains(t, names, "container_perf_metric_scaling_ratio")
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}
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type mockInfoProvider struct{}
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func (m mockInfoProvider) SubcontainersInfo(containerName string, query *info.ContainerInfoRequest) ([]*info.ContainerInfo, error) {
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return nil, nil
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}
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func (m mockInfoProvider) GetVersionInfo() (*info.VersionInfo, error) {
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return nil, nil
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}
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func (m mockInfoProvider) GetMachineInfo() (*info.MachineInfo, error) {
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return nil, nil
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}
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func mockLabelFunc(*info.ContainerInfo) map[string]string {
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return map[string]string{}
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}
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