/*
 * 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 contextutil

import (
	"context"
	"testing"

	"github.com/stretchr/testify/assert"
	"google.golang.org/grpc/metadata"
)

func TestAppendToIncomingContext(t *testing.T) {
	t.Run("invalid kvs", func(t *testing.T) {
		assert.Panics(t, func() {
			// nolint
			AppendToIncomingContext(context.Background(), "foo")
		})
	})

	t.Run("valid kvs", func(t *testing.T) {
		ctx := context.Background()
		ctx = AppendToIncomingContext(ctx, "foo", "bar")
		md, ok := metadata.FromIncomingContext(ctx)
		assert.True(t, ok)
		assert.Equal(t, "bar", md.Get("foo")[0])
	})
}