mirror of
https://github.com/prometheus/prometheus.git
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90 lines
2.6 KiB
Go
90 lines
2.6 KiB
Go
// Copyright 2013 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 rules
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import (
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"reflect"
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"testing"
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"github.com/prometheus/common/model"
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"golang.org/x/net/context"
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"github.com/prometheus/prometheus/promql"
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"github.com/prometheus/prometheus/storage/local"
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)
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func TestRuleEval(t *testing.T) {
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storage, closer := local.NewTestStorage(t, 2)
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defer closer.Close()
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engine := promql.NewEngine(storage, nil)
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ctx, cancelCtx := context.WithCancel(context.Background())
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defer cancelCtx()
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now := model.Now()
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suite := []struct {
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name string
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expr promql.Expr
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labels model.LabelSet
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result model.Vector
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}{
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{
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name: "nolabels",
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expr: &promql.NumberLiteral{Val: 1},
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labels: model.LabelSet{},
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result: model.Vector{&model.Sample{
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Value: 1,
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Timestamp: now,
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Metric: model.Metric{"__name__": "nolabels"},
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}},
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},
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{
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name: "labels",
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expr: &promql.NumberLiteral{Val: 1},
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labels: model.LabelSet{"foo": "bar"},
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result: model.Vector{&model.Sample{
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Value: 1,
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Timestamp: now,
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Metric: model.Metric{"__name__": "labels", "foo": "bar"},
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}},
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},
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}
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for _, test := range suite {
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rule := NewRecordingRule(test.name, test.expr, test.labels)
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result, err := rule.Eval(ctx, now, engine, "")
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if err != nil {
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t.Fatalf("Error evaluating %s", test.name)
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}
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if !reflect.DeepEqual(result, test.result) {
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t.Fatalf("Error: expected %q, got %q", test.result, result)
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}
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}
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}
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func TestRecordingRuleHTMLSnippet(t *testing.T) {
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expr, err := promql.ParseExpr(`foo{html="<b>BOLD<b>"}`)
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if err != nil {
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t.Fatal(err)
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}
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rule := NewRecordingRule("testrule", expr, model.LabelSet{"html": "<b>BOLD</b>"})
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const want = `<a href="/test/prefix/graph?g0.expr=testrule&g0.tab=0">testrule</a>{html="<b>BOLD</b>"} = <a href="/test/prefix/graph?g0.expr=foo%7Bhtml%3D%22%3Cb%3EBOLD%3Cb%3E%22%7D&g0.tab=0">foo{html="<b>BOLD<b>"}</a>`
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got := rule.HTMLSnippet("/test/prefix")
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if got != want {
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t.Fatalf("incorrect HTML snippet; want:\n\n%s\n\ngot:\n\n%s", want, got)
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}
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}
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