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63 lines
1.8 KiB
63 lines
1.8 KiB
// Copyright 2018 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package prometheus
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import "testing"
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type collectorDescribedByCollect struct {
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cnt Counter
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gge Gauge
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}
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func (c collectorDescribedByCollect) Collect(ch chan<- Metric) {
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ch <- c.cnt
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ch <- c.gge
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}
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func (c collectorDescribedByCollect) Describe(ch chan<- *Desc) {
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DescribeByCollect(c, ch)
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}
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func TestDescribeByCollect(t *testing.T) {
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goodCollector := collectorDescribedByCollect{
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cnt: NewCounter(CounterOpts{Name: "c1", Help: "help c1"}),
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gge: NewGauge(GaugeOpts{Name: "g1", Help: "help g1"}),
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}
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collidingCollector := collectorDescribedByCollect{
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cnt: NewCounter(CounterOpts{Name: "c2", Help: "help c2"}),
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gge: NewGauge(GaugeOpts{Name: "g1", Help: "help g1"}),
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}
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inconsistentCollector := collectorDescribedByCollect{
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cnt: NewCounter(CounterOpts{Name: "c3", Help: "help c3"}),
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gge: NewGauge(GaugeOpts{Name: "c3", Help: "help inconsistent"}),
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}
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reg := NewPedanticRegistry()
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if err := reg.Register(goodCollector); err != nil {
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t.Error("registration failed:", err)
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}
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if err := reg.Register(collidingCollector); err == nil {
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t.Error("registration unexpectedly succeeded")
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}
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if err := reg.Register(inconsistentCollector); err == nil {
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t.Error("registration unexpectedly succeeded")
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}
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if _, err := reg.Gather(); err != nil {
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t.Error("gathering failed:", err)
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}
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}
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