135 lines
3.5 KiB
Go
135 lines
3.5 KiB
Go
/*
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© Copyright IBM Corporation 2018
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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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"time"
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"github.com/prometheus/client_golang/prometheus"
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dto "github.com/prometheus/client_model/go"
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)
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func TestDescribe(t *testing.T) {
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teardownTestCase := setupTestCase(false)
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defer teardownTestCase()
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log := getTestLogger()
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ch := make(chan *prometheus.Desc)
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go func() {
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exporter := newExporter("qmName", log)
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exporter.Describe(ch)
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}()
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collect := <-requestChannel
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if collect {
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t.Errorf("Received unexpected collect request")
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}
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metrics, _ := initialiseMetrics(log)
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responseChannel <- metrics
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select {
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case prometheusDesc := <-ch:
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expected := "Desc{fqName: \"ibmmq_qmgr_" + testElement1Name + "\", help: \"" + testElement1Description + "\", constLabels: {}, variableLabels: [qmgr]}"
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actual := prometheusDesc.String()
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if actual != expected {
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t.Errorf("Expected value=%s; actual %s", expected, actual)
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}
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case <-time.After(1 * time.Second):
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t.Error("Did not receive channel response from describe")
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}
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}
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func TestCollect(t *testing.T) {
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teardownTestCase := setupTestCase(false)
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defer teardownTestCase()
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log := getTestLogger()
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exporter := newExporter("qmName", log)
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exporter.gaugeMap[testKey1] = createGaugeVec(testElement1Name, testElement1Description, false)
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for i := 1; i <= 3; i++ {
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ch := make(chan prometheus.Metric)
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go func() {
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exporter.Collect(ch)
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close(ch)
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}()
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collect := <-requestChannel
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if !collect {
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t.Errorf("Received unexpected describe request")
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}
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populateTestMetrics(i, false)
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metrics, _ := initialiseMetrics(log)
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updateMetrics(metrics)
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responseChannel <- metrics
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select {
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case <-ch:
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prometheusMetric := dto.Metric{}
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exporter.gaugeMap[testKey1].WithLabelValues("qmName").Write(&prometheusMetric)
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actual := prometheusMetric.GetGauge().GetValue()
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if i == 1 {
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if actual != float64(0) {
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t.Errorf("Expected values to be zero on first collect; actual %f", actual)
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}
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} else if actual != float64(i) {
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t.Errorf("Expected value=%f; actual %f", float64(i), actual)
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}
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case <-time.After(1 * time.Second):
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t.Error("Did not receive channel response from collect")
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}
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}
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}
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func TestCreateGaugeVec(t *testing.T) {
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ch := make(chan *prometheus.Desc)
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gaugeVec := createGaugeVec("MetricName", "MetricDescription", false)
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go func() {
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gaugeVec.Describe(ch)
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}()
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description := <-ch
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expected := "Desc{fqName: \"ibmmq_qmgr_MetricName\", help: \"MetricDescription\", constLabels: {}, variableLabels: [qmgr]}"
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actual := description.String()
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if actual != expected {
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t.Errorf("Expected value=%s; actual %s", expected, actual)
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}
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}
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func TestCreateGaugeVec_ObjectLabel(t *testing.T) {
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ch := make(chan *prometheus.Desc)
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gaugeVec := createGaugeVec("MetricName", "MetricDescription", true)
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go func() {
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gaugeVec.Describe(ch)
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}()
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description := <-ch
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expected := "Desc{fqName: \"ibmmq_object_MetricName\", help: \"MetricDescription\", constLabels: {}, variableLabels: [object qmgr]}"
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actual := description.String()
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if actual != expected {
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t.Errorf("Expected value=%s; actual %s", expected, actual)
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}
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}
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