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// Copyright 2023 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 (
"context"
html_template "html/template"
"net/url"
"testing"
"time"
"github.com/go-kit/log"
"github.com/stretchr/testify/require"
"github.com/prometheus/prometheus/model/labels"
"github.com/prometheus/prometheus/promql"
"github.com/prometheus/prometheus/promql/parser"
)
type unknownRule struct{}
func (u unknownRule) Name() string { return "" }
func (u unknownRule) Labels() labels.Labels { return labels.EmptyLabels() }
func (u unknownRule) Eval(context.Context, time.Duration, time.Time, QueryFunc, *url.URL, int) (promql.Vector, error) {
return nil, nil
}
func (u unknownRule) String() string { return "" }
func (u unknownRule) Query() parser.Expr { return nil }
func (u unknownRule) SetLastError(error) {}
func (u unknownRule) LastError() error { return nil }
func (u unknownRule) SetHealth(RuleHealth) {}
func (u unknownRule) Health() RuleHealth { return "" }
func (u unknownRule) SetEvaluationDuration(time.Duration) {}
func (u unknownRule) GetEvaluationDuration() time.Duration { return 0 }
func (u unknownRule) SetEvaluationTimestamp(time.Time) {}
func (u unknownRule) GetEvaluationTimestamp() time.Time { return time.Time{} }
func (u unknownRule) SetNoDependentRules(bool) {}
func (u unknownRule) NoDependentRules() bool { return false }
func (u unknownRule) SetNoDependencyRules(bool) {}
func (u unknownRule) NoDependencyRules() bool { return false }
func (u unknownRule) HTMLSnippet(pathPrefix string) html_template.HTML { return html_template.HTML("") }
func TestNewRuleDetailPanics(t *testing.T) {
require.PanicsWithValue(t, `unknown rule type "rules.unknownRule"`, func() {
NewRuleDetail(unknownRule{})
})
}
func TestFromOriginContext(t *testing.T) {
t.Run("should return zero value if RuleDetail is missing in the context", func(t *testing.T) {
detail := FromOriginContext(context.Background())
require.Zero(t, detail)
// The zero value for NoDependentRules must be the most conservative option.
require.False(t, detail.NoDependentRules)
// The zero value for NoDependencyRules must be the most conservative option.
require.False(t, detail.NoDependencyRules)
})
}
func TestNewRuleDetail(t *testing.T) {
t.Run("should populate NoDependentRules and NoDependencyRules for a RecordingRule", func(t *testing.T) {
rule := NewRecordingRule("test", &parser.NumberLiteral{Val: 1}, labels.EmptyLabels())
detail := NewRuleDetail(rule)
require.False(t, detail.NoDependentRules)
require.False(t, detail.NoDependencyRules)
rule.SetNoDependentRules(true)
detail = NewRuleDetail(rule)
require.True(t, detail.NoDependentRules)
require.False(t, detail.NoDependencyRules)
rule.SetNoDependencyRules(true)
detail = NewRuleDetail(rule)
require.True(t, detail.NoDependentRules)
require.True(t, detail.NoDependencyRules)
})
t.Run("should populate NoDependentRules and NoDependencyRules for a AlertingRule", func(t *testing.T) {
rule := NewAlertingRule(
"test",
&parser.NumberLiteral{Val: 1},
time.Minute,
0,
labels.FromStrings("test", "test"),
labels.EmptyLabels(),
labels.EmptyLabels(),
"",
true, log.NewNopLogger(),
)
detail := NewRuleDetail(rule)
require.False(t, detail.NoDependentRules)
require.False(t, detail.NoDependencyRules)
rule.SetNoDependentRules(true)
detail = NewRuleDetail(rule)
require.True(t, detail.NoDependentRules)
require.False(t, detail.NoDependencyRules)
rule.SetNoDependencyRules(true)
detail = NewRuleDetail(rule)
require.True(t, detail.NoDependentRules)
require.True(t, detail.NoDependencyRules)
})
}
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