// Licensed to the LF AI & Data foundation under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you 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 metrics

import (
	"os"
	"testing"

	"github.com/prometheus/client_golang/prometheus"
	"github.com/stretchr/testify/assert"
)

func TestRegisterMetrics(t *testing.T) {
	r := prometheus.NewRegistry()
	// Make sure it doesn't panic.
	RegisterRootCoord(r)
	RegisterDataNode(r)
	RegisterDataCoord(r)
	RegisterIndexNode(r)
	RegisterIndexCoord(r)
	RegisterProxy(r)
	RegisterQueryNode(r)
	RegisterQueryCoord(r)
	RegisterEtcdMetrics(r)
	ServeHTTP(r)
}

func TestGetMetricsAddr(t *testing.T) {
	assert.Equal(t, getMetricsAddr(), ":"+DefaultListenPort)
	testPort := "9092"
	os.Setenv(ListenPortEnvKey, testPort)
	assert.Equal(t, getMetricsAddr(), ":"+testPort)
}
