static class ServiceUnavailableAction extends ActionSupport {
        ServiceUnavailableAction(String displayName) {
            super(displayName)
        }

        @Override
        void handle(HttpServletRequest request, HttpServletResponse response) {
            response.sendError(503, "service unavailable")
        }
    }

    class SendFileAction extends ActionSupport {
        private final String path

        destFile.bytes == content
        writer.writeCount == 1
    }

    def "sends X-Gradle-Version and Content-Type headers on GET"() {
        server.expect("/cache/${key.hashCode}", ["GET"], new HttpServer.ActionSupport("get has appropriate headers") {
            void handle(HttpServletRequest request, HttpServletResponse response) {
                request.getHeader("X-Gradle-Version") == "3.0"

        }
        expect(httpStub)
    }

    private expect(HttpStub httpStub) {
        add(httpStub, stubAction(httpStub))
    }

    private static HttpServer.ActionSupport stubAction(HttpStub httpStub) {
        new HttpServer.ActionSupport("Generic stub handler") {
            void handle(HttpServletRequest request, HttpServletResponse response) {
                if (httpStub.request.body) {

        }
        expect(httpStub)
    }

    private expect(HttpStub httpStub) {
        add(httpStub, stubAction(httpStub))
    }

    private HttpServer.ActionSupport stubAction(HttpStub httpStub) {
        new HttpServer.ActionSupport("Generic stub handler") {
            void handle(HttpServletRequest request, HttpServletResponse response) {
                if (httpStub.request.body) {

                from configurations.compile
                into 'libs'
            }
        """

        when:
        server.expect('/repo/group/projectA/1.0/projectA-1.0.pom', false, ['GET'], new HttpServer.ActionSupport('Not Modified') {
            void handle(HttpServletRequest request, HttpServletResponse response) {
                response.sendError(304, 'Not Modified')
            }
        })

        then: