Was sind Case Management und CMMN und wie kann man das gut testen? Hier gehalten: https://www.meetup.com/de-DE/Camunda-User-Group-Hamburg/events/234290786/

1. Testen von CMMN Modellen ohne
Pein
CMMN Erweiterung von camunda-bpm-assert
@holisticon

2. Agenda
■ Case Management
■ CMMN
■ Wie testet man das?
■ F.A.C.T

3. Case Management

4. Case Management Business Process
Management
Ablauf ergibt sich zur
Ausführungszeit
Ablauf wird zur
Designzeit festgelegt
Schwach strukturierte
Prozesse
Stark strukturierte
Prozesse
Wissensarbeit Routinearbeit
Benutzer wird unterstützt Benutzer wird
eingeschränkt
... ...
CMMN
Case Management
Model and Notation
BPMN
Business Process
Model and Notation

5. CMMN

6. Models
Call hierarchy
Scenarios
Selected Model Start new Save changes   
 
 
 Camunda Play Camunda Tools

7. 1. complete A -> complete B
2. complete A -> start C -> complete C -> complete B
3. complete A -> start C -> complete B -> complete C
4. start C -> complete A -> complete B -> complete C
5. start C -> complete A -> complete C -> complete B
6. start C -> complete C -> complete A -> complete B

8. Natürlicher Ansatz eines guten Entwicklers ...
Testen!

9. Szenario

10. When a new case instance
is created
Then the human task "Task
A" is started.
Akzeptanztest 1

11. @Test
@Deployment(resources = {"our_little_case.cmmn"})
public void taskA_isStarted_CamundaApi() {
// GIVEN
// WHEN a new case instance is created
CaseInstance caseInstance = processEngine()
.getCaseService()
.createCaseInstanceByKey(OUR_LITTLE_CASE);
// THEN the human task "Task A" is started.
CaseExecution caseExecution = processEngine()
.getCaseService()
.createCaseExecutionQuery()
.activityId(TASK_A)
.singleResult();
assertThat(caseExecution.isActive()).isTrue();
}

12. Gedanken zur API
// THEN the human task "Task A" is started.
CaseExecution caseExecution = processEngine()
.getCaseService()
.createCaseExecutionQuery()
.activityId(TASK_A)
.singleResult();
assertThat(caseExecution.isActive()).isTrue();

13. assertThat(caseInstance).humanTask(TASK_A).isActive();

14. Gedanken zu AssertionErrors
org.junit.ComparisonFailure:
Expected :true
Actual :false
at sun.reflect.NativeConstructorAccessorImpl
.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl
.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl
.newInstance(DelegatingConstructorAccessorImpl.java:45)
at org.camunda.bpm.engine.test.assertions.examples.seacon
.ExampleStep1CaseTest.taskCreateInvoiceIsActive_CamundaApi(ExampleStep1CaseTest.java:43)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
...

15. java.lang.AssertionError: Expected humanTask
{id='a033ba13-15e4-11e6-8bee-5ecd9de0cc24', activityId='HT_TASK_A' }
to be in state 'enabled', but found it to be 'active'!

16. F.A.C.T.
Framework for Awesome Case Testing
CMMN Erweiterung von camunda-bpm-assert

17. When a new case instance
is created
Then the human task "Task
A" is started.
Akzeptanztest 1

18. @Test
@Deployment(resources = {"our_little_case.cmmn"})
public void taskA_isStarted() {
// GIVEN
// WHEN a new case instance is created
CaseInstance caseInstance = caseService().createCaseInstanceByKey(OUR_LITTLE_CASE);
// THEN the human task "Task A" is started.
assertThat(caseInstance).humanTask(TASK_A).isActive();
}

19. Szenario

20. When a new case instance is
created
Then the human task "Task
B" is not started.
Akzeptanztest 2

21. @Test
@Deployment(resources = {"our_little_case.cmmn"})
public void taskB_isNotStarted() {
// GIVEN
// WHEN a new case instance is created
CaseInstance caseInstance = caseService().createCaseInstanceByKey(OUR_LITTLE_CASE);
// THEN the human task "Task B" is not started.
assertThat(caseInstance).humanTask(TASK_B).isAvailable();
}

22. Szenario

23. Given a new case instance is
created
When the human task "Task
A" is completed
Then the human task "Task
B" is started.
Akzeptanztest 3

24. @Test
@Deployment(resources = {"our_little_case.cmmn"})
public void taskA_completed_taskB_isStarted() {
// GIVEN a new case instance is created
CaseInstance caseInstance = caseService().createCaseInstanceByKey(OUR_LITTLE_CASE);
// WHEN the human task "Task A" is completed
complete(caseExecution(TASK_A, caseInstance));
// THEN the human task "Task B" is started.
assertThat(caseInstance).humanTask(TASK_B).isActive();
}

25. Szenario

26. Given a new case instance is
created
And the human task "Task A"
is completed
When the human task "Task
B" is completed
Then the case instance is
completed.
Akzeptanztest 4

27. @Test
@Deployment(resources = {"our_little_case.cmmn"})
public void taskA_completed_taskB_completed_caseInstance_completed() {
// GIVEN a new case instance is created
// AND the human task "Task A" is completed
CaseInstance caseInstance = caseService().createCaseInstanceByKey(OUR_LITTLE_CASE);
complete(caseExecution(TASK_A, caseInstance));
// WHEN the human task "Task B" is completed
complete(caseExecution(TASK_B, caseInstance));
// THEN the case instance is completed.
assertThat(caseInstance).isCompleted();
}

28. Szenario

29. Zusammenfassung
■ Case Management ermöglicht sehr flexible
Arbeitsabläufe
■ CMMN Modelle werden sehr schnell komplex
■ Tests müssen leicht verständlich sein
■ BDD eignet sich auch für CMMN Tests
Aber vor allem:
■ Auch Cases sind trotz ihrer Komplexität testbar

30. https://github.com/camunda/camunda-bpm-
assert/blob/cmmn_assertions/camunda-bpm-
assert/User_Guide_CMMN.md
<dependency>
<groupId>org.camunda.bpm.extension</groupId>
<artifactId>camunda-bpm-assert</artifactId>
<version>2.0-alpha1</version>
</dependency>

31. Macht mit!
Schreibt uns einfach an!
martin.guenther@holisticon.de
malte.soerensen@holisticon.de
martin.schimak@plexiti.com
https://github.com/camunda/camunda-bpm-assert

32. E N D E