You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: discoverer_test.go
    path of file: ./repos/vald/internal/config
    
    the code of the file until where you have to start completion: //
// Copyright (C) 2019-2024 vdaas.org vald team <vald@vdaas.org>
//
// 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
//
//    https://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 config providers configuration type and load configuration logic
package config

import (
	"reflect"
	"testing"

	"github.com/vdaas/vald/internal/errors"
	"github.com/vdaas/vald/internal/test/goleak"
)

func TestDiscoverer_Bind(t *testing.T) {

    
func TestDiscoverer_Bind(t *testing.T) {
	type fields struct {
		Name              string
		Namespace         string
		DiscoveryDuration string
		Net               *Net
		Selectors         *Selectors
		ReadReplica       *ReadReplica
	}
	type want struct {
		want *Discoverer
	}
	type test struct {
		name       string
		fields     fields
		want       want
		checkFunc  func(want, *Discoverer) error
		beforeFunc func(*testing.T)
		afterFunc  func(*testing.T)
	}
	defaultCheckFunc := func(w want, got *Discoverer) error {
		if !reflect.DeepEqual(got, w.want) {
			return errors.Errorf("got: \"%#v\",\n\t\t\t\twant: \"%#v\"", got, w.want)
		}
		return nil
	}
	tests := []test{
		func() test {
			return test{
				name: "return Discoverer when the bind successes",
				fields: fields{
					Name:              "discoverer",
					Namespace:         "vald",
					DiscoveryDuration: "10ms",
				},
				want: want{
					want: &Discoverer{
						Name:              "discoverer",
						Namespace:         "vald",
						DiscoveryDuration: "10ms",
						Net:               new(Net),
						Selectors:         new(Selectors),
					},
				},
			}
		}(),
		func() test {
			return test{
				name: "return Discoverer when the bind successes and Net is not nil",
				fields: fields{
					Name:              "discoverer",
					Namespace:         "vald",
					DiscoveryDuration: "10ms",
					Net:               new(Net),
				},
				want: want{
					want: &Discoverer{
						Name:              "discoverer",
						Namespace:         "vald",
						DiscoveryDuration: "10ms",
						Net:               new(Net),
						Selectors:         new(Selectors),
					},
				},
			}
		}(),
		func() test {
			suffix := "_FOR_TEST_DISCOVERER_BIND"
			m := map[string]string{
				"NAME" + suffix:               "discoverer",
				"NAMESPACE" + suffix:          "vald",
				"DISCOVERY_DURATION" + suffix: "10ms",
			}
			return test{
				name: "return Discoverer when the bind successes and the data is loaded from the environment variable",
				fields: fields{
					Name:              "_NAME" + suffix + "_",
					Namespace:         "_NAMESPACE" + suffix + "_",
					DiscoveryDuration: "_DISCOVERY_DURATION" + suffix + "_",
				},
				beforeFunc: func(t *testing.T) {
					t.Helper()
					for key, val := range m {
						t.Setenv(key, val)
					}
				},
				want: want{
					want: &Discoverer{
						Name:              "discoverer",
						Namespace:         "vald",
						DiscoveryDuration: "10ms",
						Net:               new(Net),
						Selectors:         new(Selectors),
					},
				},
			}
		}(),
	}

	for _, tc := range tests {
		test := tc
		t.Run(test.name, func(tt *testing.T) {
			defer goleak.VerifyNone(tt, goleak.IgnoreCurrent())
			if test.beforeFunc != nil {
				test.beforeFunc(tt)
			}
			if test.afterFunc != nil {
				defer test.afterFunc(tt)
			}
			checkFunc := test.checkFunc
			if test.checkFunc == nil {
				checkFunc = defaultCheckFunc
			}
			d := &Discoverer{
				Name:              test.fields.Name,
				Namespace:         test.fields.Namespace,
				DiscoveryDuration: test.fields.DiscoveryDuration,
				Net:               test.fields.Net,
				Selectors:         test.fields.Selectors,
			}

			got := d.Bind()
			if err := checkFunc(test.want, got); err != nil {
				tt.Errorf("error = %v", err)
			}
		})
	}
}