forked from mirrors/statsd_exporter
100 lines
2.2 KiB
Go
100 lines
2.2 KiB
Go
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// Copyright (c) 2013, Prometheus Team
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// All rights reserved.
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//
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package main
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import (
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"testing"
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)
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func TestMetricMapper(t *testing.T) {
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scenarios := []struct {
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config string
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configBad bool
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mappings map[string]map[string]string
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}{
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// Empty config.
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{},
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// Config with several mapping definitions.
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{
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config: `
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test.dispatcher.*.*.*
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name="dispatch_events"
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processor="$1"
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action="$2"
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result="$3"
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job="test_dispatcher"
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*.*
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name="catchall"
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first="$1"
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second="$2"
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third="$3"
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job="$1-$2-$3"
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`,
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mappings: map[string]map[string]string{
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"test.dispatcher.FooProcessor.send.succeeded": map[string]string{
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"name": "dispatch_events",
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"processor": "FooProcessor",
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"action": "send",
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"result": "succeeded",
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"job": "test_dispatcher",
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},
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"foo.bar": map[string]string{
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"name": "catchall",
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"first": "foo",
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"second": "bar",
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"third": "",
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"job": "foo-bar-",
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},
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"foo.bar.baz": map[string]string{},
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},
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},
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// Config with bad metric line.
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{
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config: `
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bad-metric-line.*.*
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name="foo"
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`,
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configBad: true,
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},
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// Config with bad label line.
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{
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config: `
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test.*.*
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name=foo
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`,
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configBad: true,
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},
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}
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for i, scenario := range scenarios {
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mapper := metricMapper{}
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err := mapper.initFromString(scenario.config)
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if err != nil && !scenario.configBad {
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t.Fatalf("%d. Config load error: %s", i, err)
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}
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if err == nil && scenario.configBad {
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t.Fatalf("%d. Expected bad config, but loaded ok", i)
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}
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for metric, mapping := range scenario.mappings {
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labels, present := mapper.getMapping(metric)
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if len(labels) == 0 && present {
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t.Fatalf("%d.%q: Expected metric to not be present", i, metric)
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}
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if len(labels) != len(mapping) {
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t.Fatalf("%d.%q: Expected %d labels, got %d", i, metric, len(mapping), len(labels))
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}
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for label, value := range labels {
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if mapping[label] != value {
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t.Fatalf("%d.%q: Expected labels %v, got %v", i, metric, mapping, labels)
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}
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}
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}
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}
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}
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