Environment (Required on creation):

• Use the JUnit 5 extension to write a test

Description (Required on creation; please attach any relevant screenshots, stacktraces, log files, etc. to the ticket):

• The JUnit 5 extension uses the engine's TestHelper class for common logic shared between the JUnit 4 rule and the extension
• This class uses org.junit.Assert from JUnit 4

Steps to reproduce (Required on creation):

• Run a test that makes use of a TestHelper method that uses the Assert methods, e.g.

  @RegisterExtension
  ProcessEngineExtension extension = ProcessEngineExtension.builder()
      .ensureCleanAfterTest(true)
      .build();
  

Observed Behavior (Required on creation):

• Test fails with a ClassNotFoundException

Expected behavior (Required on creation):

• Test succeeds

Root Cause (Required on prioritization):

• https://github.com/camunda/camunda-bpm-platform/blob/7.17.0-alpha6/test-utils/junit5-extension/pom.xml#L43-L49

Solution Ideas (Optional):

• TestHelper should not use JUnit 4 classes
• Workaround: Add a dependency to junit-vintage-engine to the test project

Hints (optional):

• Not kinds of usage is affected, only those cases that lead to execution of TestHelper methods that make use of Assert