diff --git a/test/protocols/native/native_block.cpp b/test/protocols/native/native_block.cpp
index de2301cb..7cd46a70 100644
--- a/test/protocols/native/native_block.cpp
+++ b/test/protocols/native/native_block.cpp
@@ -57,27 +57,39 @@ BOOST_AUTO_TEST_CASE(native__top__formal_xml__not_acceptable)
 
 BOOST_AUTO_TEST_CASE(native__ws_upgrade__always__expected)
 {
-    const auto ec = ws_upgrade({});
+    const auto ec = ws_upgrade();
     BOOST_REQUIRE_MESSAGE(!ec, ec.message());
 }
 
+BOOST_AUTO_TEST_CASE(native__ws_top__json__expected)
+{
+    BOOST_REQUIRE(!ws_upgrade());
+
+    const auto response = ws_request_json("/v1/top?format=json");
+    BOOST_REQUIRE(response.is_int64());
+    BOOST_REQUIRE_EQUAL(response.as_int64(), 9);
+}
+
 BOOST_AUTO_TEST_CASE(native__ws_top__text__expected)
 {
-    const auto ec = ws_upgrade({});
-    BOOST_REQUIRE_MESSAGE(!ec, ec.message());
+    BOOST_REQUIRE(!ws_upgrade());
 
-    const auto response = ws_request("/v1/top?format=text");
+    const auto response = ws_request_text("/v1/top?format=text");
     BOOST_REQUIRE_EQUAL(response, "09");
 }
 
-BOOST_AUTO_TEST_CASE(native__ws_top__json__expected)
+BOOST_AUTO_TEST_CASE(native__ws_top__data__expected)
 {
-    const auto ec = ws_upgrade({});
-    BOOST_REQUIRE_MESSAGE(!ec, ec.message());
+    BOOST_REQUIRE(!ws_upgrade());
 
-    const auto response = ws_request_json("/v1/top?format=json");
-    BOOST_REQUIRE(response.is_int64());
-    BOOST_REQUIRE_EQUAL(response.as_int64(), 9);
+    const auto response = ws_request_data("/v1/top?format=data");
+    BOOST_REQUIRE_EQUAL(response, base16_chunk("09"));
+}
+
+BOOST_AUTO_TEST_CASE(native__ws_top__xml__error_eof)
+{
+    BOOST_REQUIRE(!ws_upgrade());
+    BOOST_REQUIRE(ws_dropped("/v1/top?format=xml"));
 }
 
 BOOST_AUTO_TEST_SUITE_END()
diff --git a/test/protocols/native/native_setup_fixture.cpp b/test/protocols/native/native_setup_fixture.cpp
index f4e17ddf..c3786c1e 100644
--- a/test/protocols/native/native_setup_fixture.cpp
+++ b/test/protocols/native/native_setup_fixture.cpp
@@ -21,6 +21,7 @@
 #include "native_setup_fixture.hpp"
 #include <future>
 
+using namespace system;
 using namespace boost::beast;
 
 BC_PUSH_WARNING(NO_THROW_IN_NOEXCEPT)
@@ -168,18 +169,18 @@ boost::json::value native_setup_fixture::get_json(std::string_view target)
     return boost::json::parse(response.body());
 }
 
-network::boost_code native_setup_fixture::ws_upgrade(std::string_view target)
+network::boost_code native_setup_fixture::ws_upgrade()
 {
     network::boost_code ec{};
     BOOST_REQUIRE(!websocket_.has_value());
 
     websocket_.emplace(socket_);
     websocket_.value().text(true);
-    websocket_.value().handshake("localhost", target.empty() ? "/" : target, ec);
+    websocket_.value().handshake("localhost", "/", ec);
     return ec;
 }
 
-std::string native_setup_fixture::ws_receive()
+data_chunk native_setup_fixture::ws_receive()
 {
     flat_buffer buffer{};
     network::boost_code ec{};
@@ -188,10 +189,11 @@ std::string native_setup_fixture::ws_receive()
     websocket_.value().read(buffer, ec);
     BOOST_REQUIRE_MESSAGE(!ec, ec.message());
 
-    return buffers_to_string(buffer.data());
+    const auto data = pointer_cast<uint8_t>(buffer.data().data());
+    return { data, std::next(data, buffer.data().size()) };
 }
 
-std::string native_setup_fixture::ws_request(std::string_view message)
+bool native_setup_fixture::ws_dropped(std::string_view message)
 {
     network::boost_code ec{};
     BOOST_REQUIRE(websocket_.has_value());
@@ -199,11 +201,29 @@ std::string native_setup_fixture::ws_request(std::string_view message)
     websocket_.value().write(net::buffer(message), ec);
     BOOST_REQUIRE_MESSAGE(!ec, ec.message());
 
-    return ws_receive();
+    flat_buffer buffer{};
+    websocket_.value().read(buffer, ec);
+    return ec == boost::asio::error::eof;
+}
+
+std::string native_setup_fixture::ws_request_text(std::string_view message)
+{
+    network::boost_code ec{};
+    BOOST_REQUIRE(websocket_.has_value());
+
+    websocket_.value().write(net::buffer(message), ec);
+    BOOST_REQUIRE_MESSAGE(!ec, ec.message());
+
+    return to_string(ws_receive());
 }
 
 boost::json::value native_setup_fixture::ws_request_json(
     std::string_view message)
+{
+    return boost::json::parse(ws_request_text(message));
+}
+
+data_chunk native_setup_fixture::ws_request_data(std::string_view message)
 {
     network::boost_code ec{};
     BOOST_REQUIRE(websocket_.has_value());
@@ -211,5 +231,5 @@ boost::json::value native_setup_fixture::ws_request_json(
     websocket_.value().write(net::buffer(message), ec);
     BOOST_REQUIRE_MESSAGE(!ec, ec.message());
 
-    return boost::json::parse(ws_receive());
+    return ws_receive();
 }
diff --git a/test/protocols/native/native_setup_fixture.hpp b/test/protocols/native/native_setup_fixture.hpp
index 0bfbc0fd..c6c7d24e 100644
--- a/test/protocols/native/native_setup_fixture.hpp
+++ b/test/protocols/native/native_setup_fixture.hpp
@@ -42,10 +42,12 @@ struct native_setup_fixture
     system::data_chunk get_data(std::string_view target);
     boost::json::value get_json(std::string_view target);
 
-    network::boost_code ws_upgrade(std::string_view target);
-    std::string ws_receive();
-    std::string ws_request(std::string_view message);
+    network::boost_code ws_upgrade();
+    system::data_chunk ws_receive();
+    bool ws_dropped(std::string_view message);
+    std::string ws_request_text(std::string_view message);
     boost::json::value ws_request_json(std::string_view message);
+    system::data_chunk ws_request_data(std::string_view message);
 
 protected:
     server::configuration config_;