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// -
// ========================LICENSE_START=================================
// Copyright (C) 2024: Deutsche Telecom
//
// 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.
// ========================LICENSE_END===================================
//
package kafkacomm
import (
"errors"
"policy-opa-pdp/pkg/kafkacomm/mocks"
"testing"
"github.com/confluentinc/confluent-kafka-go/kafka"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/mock"
)
func TestNewKafkaConsumer(t *testing.T) {
// Assuming configuration is correctly loaded from cfg package
// You can mock or override cfg values here if needed
consumer, err := NewKafkaConsumer()
assert.NoError(t, err, "Expected no error when creating Kafka consumer")
assert.NotNil(t, consumer, "Expected a non-nil KafkaConsumer")
// Clean up
if consumer != nil {
consumer.Close()
}
}
func TestReadKafkaMessages_Success(t *testing.T) {
// Create a new mock for ConsumerInterface
mockConsumer := new(mocks.KafkaConsumerInterface)
// Create a KafkaConsumer with the mock
kc := &KafkaConsumer{Consumer: mockConsumer}
// Define the expected message
expectedMsg := &kafka.Message{Value: []byte("test message")}
// Set up the mock to return the expected message
mockConsumer.On("ReadMessage", mock.Anything).Return(expectedMsg, nil)
// Test ReadKafkaMessages
msg, err := ReadKafkaMessages(kc)
assert.NoError(t, err, "Expected no error when reading message")
assert.Equal(t, expectedMsg.Value, msg, "Expected message content to match")
// Assert expectations
mockConsumer.AssertExpectations(t)
}
func TestReadKafkaMessages_Error(t *testing.T) {
mockConsumer := new(mocks.KafkaConsumerInterface)
kc := &KafkaConsumer{Consumer: mockConsumer}
// Set up the mock to return an error
expectedErr := errors.New("read error")
mockConsumer.On("ReadMessage", mock.Anything).Return(nil, expectedErr)
msg, err := ReadKafkaMessages(kc)
assert.Error(t, err, "Expected an error when reading message")
assert.Nil(t, msg, "Expected message to be nil on error")
mockConsumer.AssertExpectations(t)
}
func TestKafkaConsumer_Close(t *testing.T) {
mockConsumer := new(mocks.KafkaConsumerInterface)
kc := &KafkaConsumer{Consumer: mockConsumer}
// Set up the mock for Close
mockConsumer.On("Close").Return(nil)
// Test Close method
kc.Close()
// Verify that Close was called
mockConsumer.AssertExpectations(t)
}
func TestKafkaConsumer_Unsubscribe(t *testing.T) {
mockConsumer := new(mocks.KafkaConsumerInterface)
kc := &KafkaConsumer{Consumer: mockConsumer}
// Set up the mock for Unsubscribe
mockConsumer.On("Unsubscribe").Return(nil)
// Test Unsubscribe method
err := kc.Unsubscribe()
assert.NoError(t, err)
// Verify that Unsubscribe was called
mockConsumer.AssertExpectations(t)
}
func TestKafkaConsumer_Unsubscribe_Error(t *testing.T) {
mockConsumer := new(mocks.KafkaConsumerInterface)
mockError := errors.New("Unsubscribe error")
kc := &KafkaConsumer{Consumer: mockConsumer}
// Set up the mock for Unsubscribe
mockConsumer.On("Unsubscribe").Return(mockError)
// Test Unsubscribe method
err := kc.Unsubscribe()
assert.Error(t, err)
assert.Equal(t, mockError, err)
// Verify that Unsubscribe was called
mockConsumer.AssertExpectations(t)
}
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