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121 lines
3.6 KiB
121 lines
3.6 KiB
// 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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"context"
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"fmt"
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"testing"
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"time"
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"github.com/prometheus/prometheus/pkg/labels"
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"github.com/prometheus/prometheus/pkg/timestamp"
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"github.com/prometheus/prometheus/promql"
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"github.com/prometheus/prometheus/promql/parser"
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"github.com/prometheus/prometheus/util/teststorage"
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"github.com/prometheus/prometheus/util/testutil"
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)
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func TestRuleEval(t *testing.T) {
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storage := teststorage.New(t)
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defer storage.Close()
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opts := promql.EngineOpts{
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Logger: nil,
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Reg: nil,
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MaxSamples: 10,
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Timeout: 10 * time.Second,
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}
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engine := promql.NewEngine(opts)
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ctx, cancelCtx := context.WithCancel(context.Background())
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defer cancelCtx()
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now := time.Now()
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suite := []struct {
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name string
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expr parser.Expr
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labels labels.Labels
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result promql.Vector
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}{
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{
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name: "nolabels",
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expr: &parser.NumberLiteral{Val: 1},
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labels: labels.Labels{},
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result: promql.Vector{promql.Sample{
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Metric: labels.FromStrings("__name__", "nolabels"),
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Point: promql.Point{V: 1, T: timestamp.FromTime(now)},
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}},
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},
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{
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name: "labels",
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expr: &parser.NumberLiteral{Val: 1},
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labels: labels.FromStrings("foo", "bar"),
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result: promql.Vector{promql.Sample{
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Metric: labels.FromStrings("__name__", "labels", "foo", "bar"),
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Point: promql.Point{V: 1, T: timestamp.FromTime(now)},
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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, EngineQueryFunc(engine, storage), nil)
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testutil.Ok(t, err)
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testutil.Equals(t, test.result, result)
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}
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}
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func TestRecordingRuleHTMLSnippet(t *testing.T) {
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expr, err := parser.ParseExpr(`foo{html="<b>BOLD<b>"}`)
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testutil.Ok(t, err)
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rule := NewRecordingRule("testrule", expr, labels.FromStrings("html", "<b>BOLD</b>"))
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const want = `record: <a href="/test/prefix/graph?g0.expr=testrule&g0.tab=1">testrule</a>
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expr: <a href="/test/prefix/graph?g0.expr=foo%7Bhtml%3D%22%3Cb%3EBOLD%3Cb%3E%22%7D&g0.tab=1">foo{html="<b>BOLD<b>"}</a>
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labels:
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html: '<b>BOLD</b>'
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`
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got := rule.HTMLSnippet("/test/prefix")
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testutil.Assert(t, want == got, "incorrect HTML snippet; want:\n\n%s\n\ngot:\n\n%s", want, got)
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}
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// TestRuleEvalDuplicate tests for duplicate labels in recorded metrics, see #5529.
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func TestRuleEvalDuplicate(t *testing.T) {
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storage := teststorage.New(t)
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defer storage.Close()
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opts := promql.EngineOpts{
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Logger: nil,
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Reg: nil,
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MaxSamples: 10,
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Timeout: 10 * time.Second,
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}
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engine := promql.NewEngine(opts)
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ctx, cancelCtx := context.WithCancel(context.Background())
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defer cancelCtx()
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now := time.Now()
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expr, _ := parser.ParseExpr(`vector(0) or label_replace(vector(0),"test","x","","")`)
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rule := NewRecordingRule("foo", expr, labels.FromStrings("test", "test"))
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_, err := rule.Eval(ctx, now, EngineQueryFunc(engine, storage), nil)
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testutil.NotOk(t, err)
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e := fmt.Errorf("vector contains metrics with the same labelset after applying rule labels")
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testutil.ErrorEqual(t, e, err)
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}
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