@Rule
WireMockRule wireMockRule = new WireMockRule()

def wireMockStub = new WireMockGroovy()

def "some integration test that tests feature using external REST resource" () {
    given:
    wireMockStub.stub {
        request {
            method "GET"
            url "/some/thing"
        }
        response {
            status 200
            body "Some body"
            headers {
                "Content-Type" "text/plain"
            }
        }
    }
    ...
}

@Rule
WireMockRule wireMockRule = new WireMockRule()

def wireMockStub = new WireMockGroovy()

def "example verifying test" () {
    ...
    then:
    1 == wireMockStub.count {
        method "GET"
        url "/some/url"
    }
}

def "test using groovy truth if you need at least one request and shows example matcher" () {
    ...
    then:
    wireMockStub.count {
        method "POST"
        url "/some/url"
        headers {
            "Content-Type" {
                matches ".*xml"
            }
        }
    }
}