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// Copyright 2020 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 testutil
import (
"testing"
"github.com/prometheus/client_golang/prometheus"
)
func TestCollectAndLintGood(t *testing.T) {
cnt := prometheus.NewCounterVec(
prometheus.CounterOpts{
Name: "some_total",
Help: "A value that represents a counter.",
ConstLabels: prometheus.Labels{
"label1": "value1",
},
},
[]string{"foo"},
)
cnt.WithLabelValues("bar")
cnt.WithLabelValues("baz")
problems, err := CollectAndLint(cnt)
if err != nil {
t.Error("Unexpected error:", err)
}
if len(problems) > 0 {
t.Error("Unexpected lint problems:", problems)
}
}
func TestCollectAndLintBad(t *testing.T) {
cnt := prometheus.NewCounterVec(
prometheus.CounterOpts{
Name: "someThing_ms",
Help: "A value that represents a counter.",
ConstLabels: prometheus.Labels{
"label1": "value1",
},
},
[]string{"fooBar"},
)
cnt.WithLabelValues("bar")
cnt.WithLabelValues("baz")
problems, err := CollectAndLint(cnt)
if err != nil {
t.Error("Unexpected error:", err)
}
if len(problems) < 5 {
// The exact nature of the lint problems found is tested within
// the promlint package itself. Here we only want to make sure
// that the collector successfully hits the linter and that at
// least the five problems that the linter could recognize at
// the time of writing this test are flagged.
t.Error("Not enough lint problems found.")
}
}
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