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71 lines
1.6 KiB
Go
71 lines
1.6 KiB
Go
// Copyright 2014 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 metric
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import (
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"testing"
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"github.com/prometheus/common/model"
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)
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func TestMetric(t *testing.T) {
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testMetric := model.Metric{
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"to_delete": "test1",
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"to_change": "test2",
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}
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scenarios := []struct {
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fn func(*Metric)
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out model.Metric
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}{
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{
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fn: func(cm *Metric) {
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cm.Del("to_delete")
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},
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out: model.Metric{
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"to_change": "test2",
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},
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},
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{
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fn: func(cm *Metric) {
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cm.Set("to_change", "changed")
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},
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out: model.Metric{
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"to_delete": "test1",
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"to_change": "changed",
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},
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},
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}
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for i, s := range scenarios {
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orig := testMetric.Clone()
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cm := &Metric{
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Metric: orig,
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Copied: false,
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}
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s.fn(cm)
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// Test that the original metric was not modified.
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if !orig.Equal(testMetric) {
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t.Fatalf("%d. original metric changed; expected %v, got %v", i, testMetric, orig)
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}
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// Test that the new metric has the right changes.
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if !cm.Metric.Equal(s.out) {
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t.Fatalf("%d. copied metric doesn't contain expected changes; expected %v, got %v", i, s.out, cm.Metric)
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}
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}
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}
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