/*
 *
 * Copyright 2020 gRPC 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 credentials

import (
	"reflect"
	"testing"
)

func (s) TestAppendH2ToNextProtos(t *testing.T) {
	tests := []struct {
		name string
		ps   []string
		want []string
	}{
		{
			name: "empty",
			ps:   nil,
			want: []string{"h2"},
		},
		{
			name: "only h2",
			ps:   []string{"h2"},
			want: []string{"h2"},
		},
		{
			name: "with h2",
			ps:   []string{"alpn", "h2"},
			want: []string{"alpn", "h2"},
		},
		{
			name: "no h2",
			ps:   []string{"alpn"},
			want: []string{"alpn", "h2"},
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			if got := AppendH2ToNextProtos(tt.ps); !reflect.DeepEqual(got, tt.want) {
				t.Errorf("AppendH2ToNextProtos() = %v, want %v", got, tt.want)
			}
		})
	}
}