when:
        HttpClientHttpHeaderCredentials httpHeaderCredentials = new HttpClientHttpHeaderCredentials("TestHttpHeaderName", "TestHttpHeaderValue")

        then:
        httpHeaderCredentials.header.name == "TestHttpHeaderName"
        httpHeaderCredentials.header.value == "TestHttpHeaderValue"
    }

        def credentials = new HttpClientHttpHeaderCredentials("TestHttpHeaderName", "TestHttpHeaderValue")

        when:
        def header = headerAuthScheme.authenticate(credentials, null, null)

        then:
        header.name == "TestHttpHeaderName"
        header.value == "TestHttpHeaderValue"
    }

        def httpHeaderCredentials = new DefaultHttpHeaderCredentials()
        httpHeaderCredentials.setName("TestHttpHeaderName")
        httpHeaderCredentials.setValue("TestHttpHeaderValue")
        AllSchemesAuthentication httpHeaderAuthentication = new AllSchemesAuthentication(httpHeaderCredentials)
        httpHeaderAuthentication.addHost(REMOTE_HOST, SOME_PORT)