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[Sticky] How to write a unit test

jbarrez

When encountering a bug in Activiti, the easiest way to reach the Activiti team and see it fixed is to create an issue in the Activiti Jira (http://jira.codehaus.org/browse/ACT).

Of course, a good description on how to reproduce the problem is crucial. But to make it really interesting for us (and to speed up things), the issue is accompanied by a unit test demonstrating the problem.

To simplify this process, we've created a 'unit test template' project which you can use: https://github.com/Activiti/activiti-unit-test-template
Add your failing unit test, zip up the project and attach it to the issue.

More about this template, read http://www.jorambarrez.be/blog/2012/09/24/how-to-write-a-unit-test/

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Comments

kafeitu

When encountering a bug in Activiti, the easiest way to reach the Activiti team and see it fixed is to create an issue in the Activiti Jira (http://jira.codehaus.org/browse/ACT).

Of course, a good description on how to reproduce the problem is crucial. But to make it really interesting for us (and to speed up things), the issue is accompanied by a unit test demonstrating the problem.

To simplify this process, we've created a 'unit test template' project which you can use: https://github.com/Activiti/activiti-unit-test-template
Add your failing unit test, zip up the project and attach it to the issue.

More about this template, read http://www.jorambarrez.be/blog/2012/09/24/how-to-write-a-unit-test/

so good, I will use it to submit bugs.

powerranger520

thanks your share, it's usefull

criszhao

i'm getting error when i'm running unit test code you provided above.
The error messages:
SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
i've tried to add config in maven as metioned in userguide.

<dependency><br>&nbsp; <groupId>org.slf4j</groupId><br>&nbsp; <artifactId>slf4j-log4j12</artifactId><br>&nbsp; <version>1.7.2</version><br></dependency>

however it does not work.
i've tried to add log4j, common-logging, slf4j jars to classpath and failed too.
can anyone help me? thanks a lot!

jbarrez

I've updated the template to fix the logging: https://github.com/Activiti/activiti-unit-test-template/commit/a6b347263362d9b5385b81bd96cca225d2e16843

criszhao

I've updated the template to fix the logging: https://github.com/Activiti/activiti-unit-test-template/commit/a6b347263362d9b5385b81bd96cca225d2e16843

thanks a lot. It works now.

sonia600

Add your failing unit test, zip up the project and attach it to the issue

tassoc1

It seems that an account on Jira is required in order to submit a bug. How can I obtain it?
When I try to register, the following message is displayed:

"Not a member? To request an account, please contact your JIRA administrators."

But I can't find any administrators address.
Thanks in advance.

jbarrez

See http://activiti.org/community.html

alxt

How perform unit-test for process with expression, calling service bean?
I try change activiti.cfg.xml, add my bean , but exception raised:
<code> org.activiti.engine.ActivitiException: Unknown property used in expression: #{myBean.method()}</code>

In server this process working…

jbarrez

The unit tes here is not a SpringProcessEngineConfiguration, hence why spring beans won't work.

brett1

Of course, a good description on how to reproduce the problem is crucial. But to make it really interesting for us .thanks <a href="http://www.redriverfurnace.com">air duct cleaning</a>

martygross

Thanks jbarrez!

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ozkan

Thanks jbarrez.

sopheachhun

Dear jbarrez,

I download your template from here:https://github.com/Activiti/activiti-unit-test-template/blob/master/src/test/java/org/activiti/MyUnitTest.java

I just modify the location of the process file.

import org.activiti.engine.runtime.ProcessInstance;
import org.activiti.engine.task.Task;
import org.activiti.engine.test.ActivitiRule;
import org.activiti.engine.test.Deployment;
import org.junit.Rule;
import org.junit.Test;

import static org.junit.Assert.*;

public class UnitTestActiviti{

@Rule
public ActivitiRule activitiRule = new ActivitiRule();

@Test
@Deployment(resources = {"E:/Dropbox/workspaceEclipse/eclipseJuno/customer/addition.bpmn"})
public void test() {
ProcessInstance processInstance = activitiRule.getRuntimeService().startProcessInstanceByKey("Addition process");
assertNotNull(processInstance);

Task task = activitiRule.getTaskService().createTaskQuery().singleResult();
assertEquals("Activiti is awesome!", task.getName());
}

}

Here is the message error I get: java.lang.Exception: Field activitiRule must implement MethodRule
at org.junit.runners.BlockJUnit4ClassRunner.validateRuleField(BlockJUnit4ClassRunner.java:181)
at org.junit.runners.BlockJUnit4ClassRunner.validateFields(BlockJUnit4ClassRunner.java:176)
at org.junit.runners.BlockJUnit4ClassRunner.collectInitializationErrors(BlockJUnit4ClassRunner.java:116)
at org.junit.runners.ParentRunner.validate(ParentRunner.java:269)
at org.junit.runners.ParentRunner.<init>(ParentRunner.java:66)
at org.junit.runners.BlockJUnit4ClassRunner.<init>(BlockJUnit4ClassRunner.java:59)
at org.junit.internal.builders.JUnit4Builder.runnerForClass(JUnit4Builder.java:13)
at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:57)
at org.junit.internal.builders.AllDefaultPossibilitiesBuilder.runnerForClass(AllDefaultPossibilitiesBuilder.java:29)
at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:57)
at org.junit.internal.requests.ClassRequest.getRunner(ClassRequest.java:24)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.<init>(JUnit4TestReference.java:33)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestClassReference.<init>(JUnit4TestClassReference.java:25)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.createTest(JUnit4TestLoader.java:48)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.loadTests(JUnit4TestLoader.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:452)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)

Please help me, i am new to unitTest,

thanks inadvance,
sophea

jbarrez

Did you import this as a Maven project? Do you have anything else on your classpath unit test/test related?

I've tried the template and it runs out of the box here. Does the default example process work for you?

markv

I'm trying to use this template in activiti 5.17.0 to examine odd (but consistently reproduceable) behavior in TimerStartEvents. My first issue in doing this is to get the job executor started. The following code fails at the assertion <code>assertTrue(active)</code>, even though my understanding is that the call to <code>setJobExecutorActivate(true)</code> should be starting the jobExecutor for this ProcessEngine instance. What am I doing wrong?
<java>
@Test
public void test() {
ProcessEngine processEngine = activitiRule.getProcessEngine();
processEngine.getProcessEngineConfiguration().setJobExecutorActivate(true);
RepositoryService repositoryService = processEngine.getRepositoryService();
repositoryService.createDeployment()
.addClasspathResource("org/activiti/test/ServiceTaskTimerTest.bpmn")
.deploy();
ProcessInstance processInstance = activitiRule.getRuntimeService().startProcessInstanceByKey("serviceTaskTimerTest");
assertNotNull(processInstance);
boolean active = processEngine.getProcessEngineConfiguration().getJobExecutor().isActive();
assertTrue(active);
// Other stuff…
</java>

martin_grofcik

Hi Mark,

have a look on

org.activiti.engine.impl.test.JobTestHelper#waitForJobExecutorOnCondition(org.activiti.engine.ProcessEngineConfiguration, long, long, java.util.concurrent.Callable<java.lang.Boolean>)

in the activiti source
You can see there how to start jobExecutor.

Regards
Martin

markv

Thank you, Martin, this solved the problem. For those who may be interested, the relevant code to kick off the JobExecutor (class org.activiti.engine.impl.jobexecutor.JobExecutor) for a unit test looks like this:
<java>
//
// Use one of the many ways to construct an org.activiti.engine.ProcessEngine object.
//
JobExecutor jobExecutor = processEngine.getProcessEngineConfiguration().getJobExecutor();
jobExecutor.start();
</java>

yongqiang

Hi jbarrez,

I received issue "Caused by: org.h2.jdbc.JdbcSQLException: Table "ACT_HI_PROCINST" already exists; SQL statement:" when I use the given junit template. May I know how to clean h2 before test?

In addition, I would like to know how to let activitirule to load configuration spring.

Regards,
Yong

jbarrez

That error shouldn't happen, as it's all in memory…. there is no existing database.
Did you simply just download and ran it? Or did you do modifications?

yongqiang

Hi jbarrez,

Thank you for your confirmation.
Yes, I did some modification to the given template to work with existing spring configuration. The existing spring configuration have db configuration. Therefore, it report issue.

Best Regards,
Yong Qiang

jbarrez

Well, then I would need to see that configuration to know why it's failing … 😉

ashish46

Thanks for sharing.A unit test is code that exercises a specific portion of your codebase in a particular context. Typically, each unit test sends a specific input to a method and verifies that the method returns the expected value, or takes the expected action. Unit tests prove that the code you are testing does in fact do what you expect it to do.

gribo

Hi,

Is there a sample unit-test with ELProperty in the bmnp.xml file and spring bean ? I'm stuck with the same issue as there :

http://forums.activiti.org/content/unknown-property-used-expression-cannot-resolve-identifier-departmentheadusertask
where everything deploys great on tomcat but I can't make it work on Junit…

org.activiti.engine.ActivitiException: Unknown property used in expression: ${controleDossierService.controleDossier()}

Regards.

Edited : Finally, I made it work removing @RunWithJunit, @ApplicationContext, using ActivityRule and declaring the bean in activiti.cfg.xml

sagarsharma134

hello,
I was just wondering if there is a way to just test a java service Task instead of deploying the whole bpm process through JUnit. My BPMN flow contains large number of service tasks and user tasks and I want to test these java service Tasks separately. My service task follows the following signature:
public TaskProcessStatus processTask(DelegateExecution execution, String taskName, ServiceTask task){
//method body
}
I am not sure how do i populate the DelegateExecution execution in junit. I populated the map with my execution variables, how do i pass the map to the DelegateExecution .
I would appreciate the help.
Thank you

vasile_dirla

If you want to test just a single java delegate class, then you can create a simple process having only a ServiceTask using this delegate, when creating a process instance you can send the map of variables to be set on execution.

Like that:
<code>
    Map<String, Object> varMap = new HashMap<String, Object>();
    varMap.put("count", 0);
    varMap.put("count2", 0);
    ProcessInstance processInstance = runtimeService.startProcessInstanceByKey("dynamicServiceTask", varMap);

// getting a variable
runtimeService.getVariable(processInstance.getId(), "count");

setting a variable
runtimeService.setVariable(processInstance.getId(), "count" , 1);

setting multiple variables
runtimeService.setVariable(processInstance.getId(), varMap);
</code>

sagarsharma134

Thank you vasile.dirla