client_golang/tutorial/whatsup/internal/acceptance_test.go

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// Copyright 2023 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.
//go:build interactive
// +build interactive
package internal
import (
"fmt"
"io"
"net/http"
"strings"
"testing"
"github.com/efficientgo/core/testutil"
)
func TestAcceptance(t *testing.T) {
resp, err := http.Get(whatsupAddr(fmt.Sprintf("http://localhost:%v", WhatsupPort)) + "/metrics")
testutil.Ok(t, err)
defer resp.Body.Close()
b, err := io.ReadAll(resp.Body)
testutil.Ok(t, err)
metrics := string(b)
gotErr := false
for _, tcase := range []struct {
expectMetricName string
expectMetricType string
expectExemplar bool // TODO
}{
{
expectMetricName: "whatsup_queries_handled_total",
expectMetricType: "counter",
},
{
expectMetricName: "whatsup_last_response_elements",
expectMetricType: "gauge",
},
{
expectMetricName: "build_info",
expectMetricType: "gauge",
},
{
expectMetricName: "whatsup_queries_duration_seconds",
expectMetricType: "histogram",
},
{
expectMetricName: "go_goroutines",
expectMetricType: "gauge",
},
} {
if !t.Run(fmt.Sprintf("Metric %v type %v with exemplar %v", tcase.expectMetricName, tcase.expectMetricType, tcase.expectExemplar), func(t *testing.T) {
// Yolo.
expLine := fmt.Sprintf("# TYPE %v %v", tcase.expectMetricName, tcase.expectMetricType)
if strings.Index(metrics, expLine) == -1 {
t.Error(expLine, "not found!")
}
// TODO(bwplotka): Check all properly.
}) {
gotErr = true
}
}
if gotErr {
fmt.Println("Got this response from ", fmt.Sprintf("http://localhost:%v", WhatsupPort), ":", metrics)
}
}