Camunda JUnit not working with Delegate class referenced as Delegate Expression

mahaveer47 · May 24, 2023, 2:04am

Hi Experts

I am trying to run a simple Junit test case where the service task refers a delegate class using Delegate Expression ${calculateInterestService}.

When I run the test case, it gives the following error.

[main] ERROR org.camunda.bpm.engine.context - ENGINE-16004 Exception while closing command context: Unknown property used in expression: ${calculateInterestService}. Cause: Cannot resolve identifier ‘calculateInterestService’

But the same test case works fine, when I refer the delegate as a Java class (by providing the complete class name).

What am I missing here. Please advise.

StephanHaarmann · May 24, 2023, 5:22am

Hi,

Are you using Camunda as an embedded engine with Spring Boot?
In that case, you may register the delegates before the test.
Check out the following example by @jonathan.lukas:

github.com

jonathanlukas/camunda-7-training-embedded/blob/master/src/test/java/com/camunda/training/ProcessJUnitTest.java

package com.camunda.training;

import com.camunda.training.services.CreditCardService;
import com.camunda.training.services.CustomerService;
import org.camunda.bpm.engine.delegate.JavaDelegate;
import org.camunda.bpm.engine.runtime.ProcessInstance;
import org.camunda.bpm.engine.test.Deployment;
import org.camunda.bpm.engine.test.mock.Mocks;
import org.camunda.bpm.extension.process_test_coverage.junit5.ProcessEngineCoverageExtension;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;

import java.util.HashMap;
import java.util.Map;

import static org.assertj.core.api.Assertions.assertThat;
import static org.camunda.bpm.engine.test.assertions.ProcessEngineTests.assertThat;
import static org.camunda.bpm.engine.test.assertions.ProcessEngineTests.*;
import static org.junit.jupiter.api.Assertions.*;

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