Troubleshooting

• Troubleshooting
  • When I try to run contract tests using SpecmaticJUnitSupport, I’m getting an exception saying that XYZ method or class is missing. What do I do?
  • Maven properties in Spring projects

When I try to run contract tests using SpecmaticJUnitSupport, I’m getting an exception saying that XYZ method or class is missing. What do I do?

Spring-boot declares Kotlin as a dependency, and so does Specmatic (Specmatic is written in Kotlin). The two versions may conflict, resulting in errors about missing methods or classes.

Maven properties in Spring projects

In a Spring 2.x or 3.x project, in case of errors about a missing Kotlin method/class which indicate a core Kotlin method/class or a coroutines-related method/class, add the following to the pom:

Properties

<properties>
    <kotlin.version>1.9.22</kotlin.version>
    <kotlin-coroutines.version>latest-version-from-github-project<kotlin-coroutines.version>
</properties>

Remember: Update the version of kotlin-coroutines.version above with the latest version from https://github.com/Kotlin/kotlinx.coroutines.

Dependencies

If similar errors appear after adding these properties, add the following dependency.

<dependency>
    <groupId>org.jetbrains.kotlin</groupId>
    <artifactId>kotlin-stdlib</artifactId>
    <version>1.9.22</version>
</dependency>