We have a few tests using wiremock, using rule:
@Rule
public WireMockRule rules = new WireMockRule(PORT);
It is an old app and used wiremock version 1.7. Now that we upgraded it to the 2.4.1, some of the tests fail. The actual Http Query is done through Hystrix, which might be an issue.
When Hystrix enabled with WireMock, stubs do not work stable. Hystrix timeout should be increased in your properties. This example is for isolation thread.