Skip to main content

Tracking missing cobertura code coverage

I had recently plugged in code coverage tool cobertura in our startup and got X% of coverage and was happy because this is the first time we had testcases and code coverage working in jenkins.  I was happy and we were planning to steadily increase this code coverage but then one of the developer complained that some of the jersey tests were showing proper coverage but the server classes calling it were not showing any coverage at all.  When I had initially plugged in the coverage tool I had seen server classes showing coverage and those classes are still  showing coverage.  I thought this has to do with the grizzly rest container we were using for Jersey test.  Then while tracing missing code coverage like a detective I had an Aha moment.  Our code structure is something like

module
     server
          src
          src_test
     ui
          src
          src_test

The ui module depends on server module classes for testcase execution. I had a common_module.xml ant build file that is imported by both server  and ui module. The way I was calculating coverage is to run first instrument task and then run test and put build/instrumented_classes before the classpath.

Well it turns out the server classes were showing coverage for only code called by server/src_test and not by ui/src_test. The reason is that when I was running ui tests I was using only build/instrumented_classes whereas I also need to include ../server/build/instrumented_classes. 

Just adding that gave a solid 10% jump in code coverage :).

Comments

Popular posts from this blog

RabbitMQ java clients for beginners

Here is a sample of a consumer and producer example for RabbitMQ. The steps are
Download ErlangDownload Rabbit MQ ServerDownload Rabbit MQ Java client jarsCompile and run the below two class and you are done.
This sample create a Durable Exchange, Queue and a Message. You will have to start the consumer first before you start the for the first time.

For more information on AMQP, Exchanges, Queues, read this excellent tutorial
http://blogs.digitar.com/jjww/2009/01/rabbits-and-warrens/

+++++++++++++++++RabbitMQProducer.java+++++++++++++++++++++++++++
import com.rabbitmq.client.Connection; import com.rabbitmq.client.Channel; import com.rabbitmq.client.*; public class RabbitMQProducer { public static void main(String []args) throws Exception { ConnectionFactory factory = new ConnectionFactory(); factory.setUsername("guest"); factory.setPassword("guest"); factory.setVirtualHost("/"); factory.setHost("127.0.0.1"); factory.setPort(5672); Conne…

Spring query timeout or transaction timeout

If you are using spring to manage transactions then you can specify default transaction timeout using

    <bean id="transactionManager"
        class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource" />
        <property name="defaultTimeout" value="30" /> <!--30 sec--->             
    </bean>

or you can override the timeout in the annotation

    @Transactional(readOnly = false, timeout=30)


or if you are doing it programatic transactions then you can do


DataSourceTransactionManager transactionManager = new DataSourceTransactionManager(dataSource);
transactionManager.setDefaultTimeout(30);

 or you can override the timeout for one particular transaction

TransactionTemplate transactionTemplate = new TransactionTemplate();
transactionTemplate.setTimeout(30);

Python adding pid file

I have a thumbnail generator that launches multiple processes and the correct way to shut it down is to send kill -HUP to the parent process. To automate I had to write a pid file from python, it was a piece of cake
def writePidFile(): pid = str(os.getpid()) f = open('thumbnail_rabbit_consumer.pid', 'w') f.write(pid) f.close()