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unit-testing - GoLang Sarama ConsumerGroup 模拟

问题描述

我是 Go 新手，我也在努力模拟这个电话：sarama.NewConsumerGroup(brokers, group, config)

我正在使用 testify，我的模拟代码目前看起来像：

type MyMockedObjectReciever struct {
    mock.Mock
    Receiver
}

func (m *MyMockedObjectReciever) mockCreateConsumer(brokers []string, group string, config *sarama.Config) (sarama.ConsumerGroup, error) {
    args := m.Called(brokers, group, config)
    return args.Get(0).(sarama.ConsumerGroup), args.Error(1)
}

// mock connection and subscribe
        wantConsumer := sarama.NewConsumerGroup
        createConsumer = c.mockCreateConsumer
        c.On("mockCreateConsumer", []string{testBrokers}, testGroup, wantConfig).Return(wantConsumer, nil).Once()

但我得到了错误：

--- FAIL: TestKafkaReceiver (0.00s)
    --- FAIL: TestKafkaReceiver/test_a_Kafka_receiver (0.00s)
panic: interface conversion: func([]string, string, *sarama.Config) (sarama.ConsumerGroup, error) is not sarama.ConsumerGroup: missing method Close [recovered]
    panic: interface conversion: func([]string, string, *sarama.Config) (sarama.ConsumerGroup, error) is not sarama.ConsumerGroup: missing method Close

我相信我错误地嘲笑了电话，但现在确定还能做什么。

标签： unit-testinggomockingsaramatestify

解决方案

您可以像下面这样编写您的模拟消费者，这将满足消费者组对象。

// Consumergroup handler
type testConsumerGroupHandler struct {
}

func (C testConsumerGroupHandler) Consume(ctx context.Context, topics []string, handler sarama.ConsumerGroupHandler) error {
    return nil
}
func (C testConsumerGroupHandler) Errors() <-chan error {
    return nil
}
func (C testConsumerGroupHandler) Close() error {
    return nil
}

之后，您应该编写成功和失败的方法，并相应地设置模拟测试

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