小编Abu*_*han的帖子

我正在对 Mockito 中的方法进行单元测试，即使我已经初始化了要返回的列表，mockito 也会不断发送一个空的零大小列表。

这是要测试的代码。请注意， nonCashIncludedPaymentPlanActive 始终为 true ( Mocked )。

    List<DebtAccountTransaction> debtAccountTransactionList = null;

    boolean nonCashIncludedPaymentPlanActive = balancingPlanService.checkNonCashIncludedPaymentPlanParameter(debtAccountId);


    if (nonCashIncludedPaymentPlanActive) {
        debtAccountTransactionList = debtAccountTransactionDao
                .getDebtAccountTransactionListByDebtAccountIdListWithCN(baseDebtIdAccountList, null);
    } 
    if (debtAccountTransactionList.isEmpty()) {
        throw new SfcException("DISPLAY.PAYMENT_PLAN_WITH_NO_BALANCE_SERVICE_FILE_CLOSED");
    }

这是不断返回我在 mockito 中模拟的列表并向其中添加一个项目的语句，在这里它返回一个空列表。

debtAccountTransactionList = debtAccountTransactionDao
                .getDebtAccountTransactionListByDebtAccountIdListWithCN(baseDebtIdAccountList, null);

然后当然会被这条线抓住

if (debtAccountTransactionList.isEmpty()) {
        throw new SfcException("DISPLAY.PAYMENT_PLAN_WITH_NO_BALANCE_SERVICE_FILE_CLOSED");
    }

因此，为了避免这条执行路径，我在 Mockito 中做了以下工作：

when(debtAccountTransactionDao.getDebtAccountTransactionListByDebtAccountIdListWithCN(baseDebtIdAccountList, null)).thenReturn(
            debtAccountTransactionList);

和debtAccountTransactionList 的声明是：

DebtAccountTransaction debtAccountTransaction = spy(DebtAccountTransaction.class);
    debtAccountTransaction.setId(2L);


    List<DebtAccountTransaction> debtAccountTransactionList = new ArrayList<DebtAccountTransaction>();
    debtAccountTransactionList.add(debtAccountTransaction);

我尝试模拟一个列表，尝试了不同的参数捕获器，但似乎没有任何效果。当我调试它时，Mockito 确实填充了DebtAccountTransactionList但有一个空列表，因此它失败了。

关于如何确保 Mockito 发送非空非零列表以便它可以绕过isEmpty()检查的任何帮助。

我在 Spring Boot 项目中使用Spring-Kafka 2.7.1 。

当我将其连接到配置了 SSL 的 Kafka Broker 时，它会给出如下所示的“OutofMemory”错误，即使我多次增加堆大小但无济于事。

日志如下：

java.lang.OutOfMemoryError: Java heap space\
    at java.base/java.nio.HeapByteBuffer.<init>(HeapByteBuffer.java:61) ~[na:na]\
    at java.base/java.nio.ByteBuffer.allocate(ByteBuffer.java:348) ~[na:na]\
    at org.apache.kafka.common.memory.MemoryPool$1.tryAllocate(MemoryPool.java:30) ~[kafka-clients-2.7.1.jar!/:na]\
    at org.apache.kafka.common.network.NetworkReceive.readFrom(NetworkReceive.java:113) ~[kafka-clients-2.7.1.jar!/:na]\
    at org.apache.kafka.common.network.KafkaChannel.receive(KafkaChannel.java:447) ~[kafka-clients-2.7.1.jar!/:na]\
    at org.apache.kafka.common.network.KafkaChannel.read(KafkaChannel.java:397) ~[kafka-clients-2.7.1.jar!/:na]\
    at org.apache.kafka.common.network.Selector.attemptRead(Selector.java:674) ~[kafka-clients-2.7.1.jar!/:na]\
    at org.apache.kafka.common.network.Selector.pollSelectionKeys(Selector.java:576) ~[kafka-clients-2.7.1.jar!/:na]\
    at org.apache.kafka.common.network.Selector.poll(Selector.java:481) ~[kafka-clients-2.7.1.jar!/:na]\
    at org.apache.kafka.clients.NetworkClient.poll(NetworkClient.java:563) ~[kafka-clients-2.7.1.jar!/:na]\
    at org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.poll(ConsumerNetworkClient.java:265) ~[kafka-clients-2.7.1.jar!/:na]\
    at org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.poll(ConsumerNetworkClient.java:236) ~[kafka-clients-2.7.1.jar!/:na]\
    at org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.poll(ConsumerNetworkClient.java:215) ~[kafka-clients-2.7.1.jar!/:na]\
    at org.apache.kafka.clients.consumer.internals.AbstractCoordinator.ensureCoordinatorReady(AbstractCoordinator.java:245) ~[kafka-clients-2.7.1.jar!/:na]\
    at org.apache.kafka.clients.consumer.internals.ConsumerCoordinator.poll(ConsumerCoordinator.java:480) ~[kafka-clients-2.7.1.jar!/:na]\
    at org.apache.kafka.clients.consumer.KafkaConsumer.updateAssignmentMetadataIfNeeded(KafkaConsumer.java:1257) ~[kafka-clients-2.7.1.jar!/:na]\
    at org.apache.kafka.clients.consumer.KafkaConsumer.poll(KafkaConsumer.java:1226) ~[kafka-clients-2.7.1.jar!/:na]\
    at org.apache.kafka.clients.consumer.KafkaConsumer.poll(KafkaConsumer.java:1206) ~[kafka-clients-2.7.1.jar!/:na]\
    at org.springframework.kafka.listener.KafkaMessageListenerContainer$ListenerConsumer.doPoll(KafkaMessageListenerContainer.java:1414) ~[spring-kafka-2.7.7.jar!/:2.7.7]\
    at org.springframework.kafka.listener.KafkaMessageListenerContainer$ListenerConsumer.pollAndInvoke(KafkaMessageListenerContainer.java:1251) ~[spring-kafka-2.7.7.jar!/:2.7.7]\
    at …