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|
package safeprom
import (
"bufio"
"net/http"
"net/http/httptest"
"strconv"
"strings"
"testing"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/client_golang/prometheus/promhttp"
)
func TestIncVecWithLabelValues(t *testing.T) {
ts := httptest.NewServer(promhttp.Handler())
defer ts.Close()
metricName := "label_values"
usersTotal := NewCounterVecRegistered(
prometheus.CounterOpts{
Name: metricName,
},
[]string{"status"},
)
for i := 0; i < 8; i++ {
usersTotal.WithLabelValues("active").Inc()
expectedValue(t, ts.URL, metricName, 8)
}
usersTotal.WithLabelValues("active").Inc()
expectedValue(t, ts.URL, metricName, 16)
}
func TestIncVecWith(t *testing.T) {
ts := httptest.NewServer(promhttp.Handler())
defer ts.Close()
metricName := "with"
usersTotal := NewCounterVecRegistered(
prometheus.CounterOpts{
Name: metricName,
},
[]string{"status"},
)
for i := 0; i < 8; i++ {
usersTotal.With(prometheus.Labels{"status": "active"}).Inc()
expectedValue(t, ts.URL, metricName, 8)
}
usersTotal.With(prometheus.Labels{"status": "active"}).Inc()
expectedValue(t, ts.URL, metricName, 16)
}
func expectedValue(t *testing.T, url string, metric string, expected int) {
res, err := http.Get(url)
if err != nil {
t.Fatal(err)
}
defer res.Body.Close()
value := -1
scanner := bufio.NewScanner(res.Body)
for scanner.Scan() {
line := scanner.Text()
if !strings.HasPrefix(line, metric) {
continue
}
parts := strings.Split(line, " ")
value, err = strconv.Atoi(parts[len(parts)-1])
if err != nil {
t.Fatal(err)
}
}
if value == -1 {
t.Fatal("Metric", metric, "was not present")
}
if value != expected {
t.Error("Metric value is not", expected, ":", value)
}
}
|
