| // Copyright 2018 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. |
| |
| 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) |
| } |
| } |
| } |