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: producer_impl_test.go
    path of file: ./repos/cadence/common/messaging/kafka
    
    the code of the file until where you have to start completion: // The MIT License (MIT)

// Copyright (c) 2017-2020 Uber Technologies Inc.

// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CO
    
func TestPublish(t *testing.T) {
	msgType := indexer.MessageTypeIndex
	testCases := []struct {
		name    string
		message interface{}
		hasErr  bool
	}{
		{
			name: "Publish message succeeded",
			message: &indexer.Message{
				MessageType: &msgType,
				DomainID:    common.StringPtr("test-domain-id"),
				WorkflowID:  common.StringPtr("test-workflow-id"),
				RunID:       common.StringPtr("test-workflow-run-id"),
			},
			hasErr: false,
		},
		{
			name:    "Unrecognized message type",
			message: "This is not a recognized message type",
			hasErr:  true,
		},
	}

	for _, tc := range testCases {
		t.Run(tc.name, func(t *testing.T) {
			// Create a mock sarama.SyncProducer
			mockProducer := mocks.NewSyncProducer(t, nil)
			logger := testlogger.New(t)
			topic := "test-topic"
			ctx := context.Background()
			kafkaProducer := NewKafkaProducer(topic, mockProducer, logger)

			// Only expect SendMessage to be called if no error is expected
			if !tc.hasErr {
				mockProducer.ExpectSendMessageAndSucceed()
			}
			err := kafkaProducer.Publish(ctx, tc.message)

			if !tc.hasErr {
				assert.NoError(t, err, "An error was not expected but got %v", err)
			} else {
				assert.Error(t, err, "Expected an error but none was found")
			}
		})
	}
}