client_golang/prometheus/value_test.go

44 lines
859 B
Go

package prometheus
import (
"fmt"
"testing"
)
func TestNewConstMetricInvalidLabelValues(t *testing.T) {
testCases := []struct {
desc string
labels Labels
}{
{
desc: "non utf8 label value",
labels: Labels{"a": "\xFF"},
},
{
desc: "not enough label values",
labels: Labels{},
},
{
desc: "too many label values",
labels: Labels{"a": "1", "b": "2"},
},
}
for _, test := range testCases {
metricDesc := NewDesc(
"sample_value",
"sample value",
[]string{"a"},
Labels{},
)
expectPanic(t, func() {
MustNewConstMetric(metricDesc, CounterValue, 0.3, "\xFF")
}, fmt.Sprintf("WithLabelValues: expected panic because: %s", test.desc))
if _, err := NewConstMetric(metricDesc, CounterValue, 0.3, "\xFF"); err == nil {
t.Errorf("NewConstMetric: expected error because: %s", test.desc)
}
}
}