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// Copyright 2013 The Prometheus Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package rules
import (
"reflect"
"testing"
"github.com/prometheus/common/model"
"golang.org/x/net/context"
"github.com/prometheus/prometheus/promql"
"github.com/prometheus/prometheus/storage/local"
)
func TestRuleEval(t *testing.T) {
storage, closer := local.NewTestStorage(t, 2)
defer closer.Close()
engine := promql.NewEngine(storage, nil)
ctx, cancelCtx := context.WithCancel(context.Background())
defer cancelCtx()
now := model.Now()
suite := []struct {
name string
expr promql.Expr
labels model.LabelSet
result model.Vector
}{
{
name: "nolabels",
expr: &promql.NumberLiteral{Val: 1},
labels: model.LabelSet{},
result: model.Vector{&model.Sample{
Value: 1,
Timestamp: now,
Metric: model.Metric{"__name__": "nolabels"},
}},
},
{
name: "labels",
expr: &promql.NumberLiteral{Val: 1},
labels: model.LabelSet{"foo": "bar"},
result: model.Vector{&model.Sample{
Value: 1,
Timestamp: now,
Metric: model.Metric{"__name__": "labels", "foo": "bar"},
}},
},
}
for _, test := range suite {
rule := NewRecordingRule(test.name, test.expr, test.labels)
result, err := rule.Eval(ctx, now, engine, "")
if err != nil {
t.Fatalf("Error evaluating %s", test.name)
}
if !reflect.DeepEqual(result, test.result) {
t.Fatalf("Error: expected %q, got %q", test.result, result)
}
}
}
func TestRecordingRuleHTMLSnippet(t *testing.T) {
expr, err := promql.ParseExpr(`foo{html="<b>BOLD<b>"}`)
if err != nil {
t.Fatal(err)
}
rule := NewRecordingRule("testrule", expr, model.LabelSet{"html": "<b>BOLD</b>"})
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>`
got := rule.HTMLSnippet("/test/prefix")
if got != want {
t.Fatalf("incorrect HTML snippet; want:\n\n%s\n\ngot:\n\n%s", want, got)
}
}
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