// Copyright 2015 Prometheus Team
// 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 test

import (
	"fmt"
	"testing"
	"time"

	. "github.com/prometheus/alertmanager/test"
)

func TestInhibiting(t *testing.T) {
	t.Parallel()

	conf := `
route:
  receiver: "default"
  group_by: []
  group_wait:      1s
  group_interval:  1s
  repeat_interval: 1s

receivers:
- name: "default"
  webhook_configs:
  - url: 'http://%s'

inhibit_rules:
- source_match:
    alertname: JobDown
  target_match:
    alertname: InstanceDown
  equal:
    - job
    - zone
`

	at := NewAcceptanceTest(t, &AcceptanceOpts{
		Tolerance: 150 * time.Millisecond,
	})

	co := at.Collector("webhook")
	wh := NewWebhook(co)

	am := at.Alertmanager(fmt.Sprintf(conf, wh.Address()))

	am.Push(At(1), Alert("alertname", "test1", "job", "testjob", "zone", "aa"))
	am.Push(At(1), Alert("alertname", "InstanceDown", "job", "testjob", "zone", "aa"))
	am.Push(At(1), Alert("alertname", "InstanceDown", "job", "testjob", "zone", "ab"))

	// This JobDown in zone aa should inhibit InstanceDown in zone aa in the
	// second batch of notifications.
	am.Push(At(2.2), Alert("alertname", "JobDown", "job", "testjob", "zone", "aa"))

	co.Want(Between(2, 2.5),
		Alert("alertname", "test1", "job", "testjob", "zone", "aa").Active(1),
		Alert("alertname", "InstanceDown", "job", "testjob", "zone", "aa").Active(1),
		Alert("alertname", "InstanceDown", "job", "testjob", "zone", "ab").Active(1),
	)

	co.Want(Between(3, 3.5),
		Alert("alertname", "test1", "job", "testjob", "zone", "aa").Active(1),
		Alert("alertname", "InstanceDown", "job", "testjob", "zone", "ab").Active(1),
		Alert("alertname", "JobDown", "job", "testjob", "zone", "aa").Active(2.2),
	)

	at.Run()
}