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https://github.com/prometheus/prometheus
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7ccd4b39b8
This adds a parameter to the storage selection interface which allows query engine(s) to pass information about the operations surrounding a data selection. This can for example be used by remote storage backends to infer the correct downsampling aggregates that need to be provided.
85 lines
2.6 KiB
Go
85 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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"context"
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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/util/testutil"
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)
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func TestRuleEval(t *testing.T) {
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storage := testutil.NewStorage(t)
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defer storage.Close()
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engine := promql.NewEngine(nil, nil, 10, 10*time.Second)
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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 promql.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: &promql.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: &promql.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, result, test.result)
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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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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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