It seems the version 1.13.7 has lost support for parallel execution. I would blame this change: #1099.
clearAllMocks is known to not be thread safe and now it is called after each test. In previous version the issue with clearAllMocks could have been avoided by putting tests which use this function out of parallel execution scope. Now the issue affects all tests and parallel execution seems completely impossible.

• I am running the latest version
• I checked the documentation and found no answer
• I checked to make sure that this issue has not already been filed

Expected Behavior

When using systemProperty("junit.jupiter.execution.parallel.enabled", "true") in gradle setting for test task I would expect test results to be the same as for disabled parallel execution.

Current Behavior

Many tests fail with
io.mockk.MockKException: no answer found for <some mock> among the configured answers

Steps to Reproduce

Put systemProperty("junit.jupiter.execution.parallel.enabled", "true") into your build.gradle.kts file

Context

Please provide any relevant information about your setup. This is important in case the issue is not reproducible except for under certain conditions.

• MockK version: 1.13.7
• Kotlin version: 1.9.0
• JUnit version: 5.6.2
• Type of test: unit test