// Copyright © 2021 Weald Technology Trading
// 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 members

import (
	"context"
	"testing"

	"github.com/attestantio/go-eth2-client/spec/phase0"
	"github.com/stretchr/testify/require"
)

func TestOutput(t *testing.T) {
	tests := []struct {
		name    string
		dataOut *dataOut
		res     string
		err     string
	}{
		{
			name: "Nil",
			err:  "no data",
		},
		{
			name:    "Empty",
			dataOut: &dataOut{},
			res:     "No sync committee validators found",
		},
		{
			name: "Present",
			dataOut: &dataOut{
				validators: []phase0.ValidatorIndex{1, 2, 3},
			},
			res: "1,2,3",
		},
		{
			name: "JSON",
			dataOut: &dataOut{
				json:       true,
				validators: []phase0.ValidatorIndex{1, 2, 3},
			},
			res: `["1","2","3"]`,
		},
	}

	for _, test := range tests {
		t.Run(test.name, func(t *testing.T) {
			res, err := output(context.Background(), test.dataOut)
			if test.err != "" {
				require.EqualError(t, err, test.err)
			} else {
				require.NoError(t, err)
				require.Equal(t, test.res, res)
			}
		})
	}
}
