org.glassfish.jersey.internal.RuntimeDelegateImpl NOT FOUND

If you’re using Maven, use the following dependency:

<dependency>
    <groupId>org.glassfish.jersey.core</groupId>
    <artifactId>jersey-common</artifactId>
    <version>2.22.2</version>
    <scope>test</scope>
</dependency>

For Gradle, the following will work:

testImplementation 'org.glassfish.jersey.core:jersey-common:2.22.2'