[test] Switch to C++ HTTP server

5 files changed, 232 insertions, 6 deletions

diff --git a/next/test/CMakeLists.txt b/next/test/CMakeLists.txt
index cb0519ade9..dc6ea3987c 100644
--- a/next/test/CMakeLists.txt
+++ b/next/test/CMakeLists.txt
@@ -110,15 +110,26 @@ add_library(
     ${MBGL_ROOT}/test/util/url.test.cpp
 )
 
-find_program(MBGL_TEST_NODEJS NAMES nodejs node)
-find_program(MBGL_TEST_NPM NAMES npm)
-
-if(WIN32 OR CMAKE_SYSTEM_NAME STREQUAL Android OR NOT MBGL_TEST_NODEJS OR NOT MBGL_TEST_NPM)
+if(WIN32 OR CMAKE_SYSTEM_NAME STREQUAL Android)
     message("Target platform does not support HTTP tests or dependencies not found.")
 
     set(MBGL_TEST_HAS_TEST_SERVER 0)
 else()
     set(MBGL_TEST_HAS_TEST_SERVER 1)
+    target_sources(
+        mbgl-test
+        PRIVATE ${MBGL_ROOT}/test/src/mbgl/test/http_server.cpp
+    )
+    set_source_files_properties(
+        ${MBGL_ROOT}/test/src/mbgl/test/http_server.cpp
+        PROPERTIES
+        COMPILE_FLAGS
+        -Wno-shadow
+    )
+    target_include_directories(
+        mbgl-test
+        PRIVATE ${MBGL_ROOT}/vendor/cpp-httplib
+    )
 endif()
 
 if(NOT DEFINED ENV{CI})
@@ -129,7 +140,7 @@ endif()
 
 target_compile_definitions(
     mbgl-test
-    PRIVATE NODE_EXECUTABLE=${MBGL_TEST_NODEJS} TEST_HAS_SERVER=${MBGL_TEST_HAS_TEST_SERVER} CI_BUILD=${MBGL_TEST_BUILD_ON_CI}
+    PRIVATE TEST_HAS_SERVER=${MBGL_TEST_HAS_TEST_SERVER} CI_BUILD=${MBGL_TEST_BUILD_ON_CI}
 )
 
 target_include_directories(
diff --git a/test/include/mbgl/test/util.hpp b/test/include/mbgl/test/util.hpp
index 9f56841dcc..b499b5750c 100644
--- a/test/include/mbgl/test/util.hpp
+++ b/test/include/mbgl/test/util.hpp
@@ -54,9 +54,14 @@
 
 #include <cstdint>
 #include <memory>
+#include <thread>
 
 #include <gtest/gtest.h>
 
+namespace httplib {
+class Server;
+}
+
 namespace mbgl {
 namespace test {
 
@@ -69,6 +74,16 @@ private:
     int fd = -1;
 };
 
+class HttpServer {
+public:
+    HttpServer();
+    ~HttpServer();
+
+private:
+    std::unique_ptr<httplib::Server> server;
+    std::thread serverThread;
+};
+
 void checkImage(const std::string& base,
                 const PremultipliedImage& actual,
                 double imageThreshold = 0,
diff --git a/test/src/mbgl/test/http_server.cpp b/test/src/mbgl/test/http_server.cpp
new file mode 100644
index 0000000000..2b72bb2c94
--- /dev/null
+++ b/test/src/mbgl/test/http_server.cpp
@@ -0,0 +1,199 @@
+#include <mbgl/test/util.hpp>
+
+#include <mbgl/util/chrono.hpp>
+#include <mbgl/util/logging.hpp>
+
+// Limit to 4 threads (default is the nbr of CPU cores)
+#define CPPHTTPLIB_THREAD_POOL_COUNT 4
+#include <httplib.h>
+
+#include <atomic>
+
+namespace mbgl {
+namespace test {
+
+void runServer(std::unique_ptr<httplib::Server>& server) {
+    using namespace httplib;
+
+    server->Get("/test", [](const Request& req, Response& res) {
+        if (req.has_param("modified")) {
+            std::string str = util::rfc1123(util::parseTimestamp(std::stoi(req.get_param_value("modified"))));
+            res.set_header("Last-Modified", str);
+        }
+        if (req.has_param("expires")) {
+            std::string str = util::rfc1123(util::parseTimestamp(std::stoi(req.get_param_value("expires"))));
+            res.set_header("Expires", str);
+        }
+        if (req.has_param("etag")) {
+            res.set_header("ETag", req.get_param_value("etag"));
+        }
+        if (req.has_param("cachecontrol")) {
+            res.set_header("Cache-Control", "max-age=" + req.get_param_value("cachecontrol"));
+        }
+        res.set_content("Hello World!", "text/plain");
+    });
+
+    server->Get("/stale", [](const Request&, Response&) {
+        // Never respond.
+    });
+
+    std::atomic_int cacheCounter(0);
+    server->Get("/cache", [&](const Request&, Response& res) {
+        res.set_header("Cache-Control", "max-age=30"); // Allow caching for 30 seconds
+        res.set_content("Response " + std::to_string(++cacheCounter), "text/plain");
+    });
+
+    server->Get("/revalidate-same", [](const Request& req, Response& res) {
+        if (req.get_header_value("if-none-match") == "snowfall") {
+            // Second request can be cached for 1 second.
+            res.set_header("Cache-Control", "max-age=1, must-revalidate");
+            res.status = 304;
+        } else {
+            // First request must always be revalidated.
+            res.set_header("ETag", "snowfall");
+            res.set_header("Cache-Control", "must-revalidate");
+            res.status = 200;
+            res.set_content("Response", "text/plain");
+        }
+    });
+
+    std::atomic_bool expiredOnce(true);
+    server->Get("/clockskew", [&](const Request&, Response& res) {
+        std::string dateStr;
+        if (expiredOnce) {
+            dateStr = "jan 1 10:00:00 2010 utc";
+            expiredOnce = false;
+        } else {
+            dateStr = "jan 1 10:01:00 2010 utc";
+        }
+        res.set_header("Expires", util::rfc1123(util::parseTimestamp(dateStr.c_str())));
+        res.status = 200;
+        res.set_content("Response", "text/plain");
+    });
+
+    server->Get("/revalidate-modified", [&](const Request& req, Response& res) {
+        auto jan1 = util::parseTimestamp("jan 1 2015 utc");
+
+        if (req.has_header("if-modified-since")) {
+            auto modified_since = util::parseTimestamp(req.get_header_value("if-modified-since").c_str());
+            if (modified_since >= jan1) {
+                res.set_header("Cache-Control", "max-age=1, must-revalidate");
+                res.status = 304;
+                return;
+            }
+        }
+
+        // First request must always be revalidated.
+        res.set_header("Last-Modified", util::rfc1123(jan1));
+        res.set_header("Cache-Control", "must-revalidate");
+        res.status = 200;
+        res.set_content("Response", "text/plain");
+    });
+
+    std::atomic_int revalidateEtagCounter(1);
+    server->Get("/revalidate-etag", [&](const Request&, Response& res) {
+        res.set_header("ETag", "response-" + std::to_string(revalidateEtagCounter));
+        res.set_header("Cache-Control", "must-revalidate");
+
+        res.status = 200;
+        res.set_content("Response " + std::to_string(revalidateEtagCounter), "text/plain");
+        revalidateEtagCounter++;
+    });
+
+    server->Get("/empty-data", [](const Request&, Response& res) { res.status = 200; });
+
+    server->Get("/no-content", [](const Request&, Response& res) { res.status = 204; });
+
+    server->Get("/not-found", [](const Request&, Response& res) {
+        res.status = 404;
+        res.set_content("Not Found!", "text/plain");
+    });
+
+    server->Get("/permanent-error", [](const Request&, Response& res) {
+        res.status = 500;
+        res.set_content("Server Error!", "text/plain");
+    });
+
+    std::atomic_int temporaryErrorCounter(0);
+    server->Get("/temporary-error", [&](const Request&, Response& res) {
+        if (temporaryErrorCounter == 0) {
+            res.status = 500;
+        } else {
+            res.status = 200;
+            res.set_content("Hello World!", "text/plain");
+        }
+        temporaryErrorCounter++;
+    });
+
+    server->Get("/rate-limit", [](const Request& req, Response& res) {
+        if (req.has_param("std")) {
+            res.set_header("Retry-After", "1");
+        } else if (req.has_param("mbx")) {
+            res.set_header("x-rate-limit-reset", std::to_string(util::now().time_since_epoch().count() + 1));
+        }
+        res.status = 429;
+    });
+
+    std::atomic_bool styleFailOnce500(true);
+    server->Get("/style-fail-once-500", [&](const Request&, Response& res) {
+        if (styleFailOnce500) {
+            res.status = 500;
+            res.set_content("Not found!", "text/plain");
+            styleFailOnce500 = false;
+        } else {
+            res.status = 200;
+            res.set_content(R"({ "version": 8, "name": "Test Style" })", "text/plain");
+        }
+    });
+
+    std::atomic_bool styleFailOnce404(true);
+    server->Get("/style-fail-once-404", [&](const Request&, Response& res) {
+        if (styleFailOnce404) {
+            res.status = 404;
+            res.set_content("Not found!", "text/plain");
+            styleFailOnce404 = false;
+        } else {
+            res.status = 200;
+            res.set_content(R"({ "version": 8, "name": "Test Style" })", "text/plain");
+        }
+    });
+
+    std::atomic_bool styleFailOnce404Cache(true);
+    server->Get("/style-fail-once-404-cache", [&](const Request&, Response& res) {
+        if (styleFailOnce404Cache) {
+            res.set_header("Cache-Control", "max-age=30");
+            res.status = 404;
+            res.set_content("Not found!", "text/plain");
+            styleFailOnce404Cache = false;
+        } else {
+            res.status = 200;
+            res.set_content(R"({ "version": 8, "name": "Teste Style" })", "text/plain");
+        }
+    });
+
+    server->Get("/delayed", [](const Request&, Response& res) {
+        usleep(200000);
+        res.status = 200;
+        res.set_content("Response", "text/plain");
+    });
+
+    server->Get(R"(/load/(\d+))", [](const Request req, Response& res) {
+        auto numbers = req.matches[1];
+        res.set_content("Request " + std::string(numbers), "text/plain");
+    });
+
+    server->listen("127.0.0.1", 3000);
+}
+
+HttpServer::HttpServer() {
+    server = std::make_unique<httplib::Server>();
+    serverThread = std::thread(runServer, std::ref(server));
+}
+
+HttpServer::~HttpServer() {
+    server->stop();
+    serverThread.join();
+}
+
+} // namespace test
+} // namespace mbgl
diff --git a/test/src/mbgl/test/test.cpp b/test/src/mbgl/test/test.cpp
index 12a3dff720..fbc67f680c 100644
--- a/test/src/mbgl/test/test.cpp
+++ b/test/src/mbgl/test/test.cpp
@@ -8,7 +8,7 @@ namespace mbgl {
 
 int runTests(int argc, char *argv[]) {
 #if TEST_HAS_SERVER
-    auto server = std::make_unique<test::Server>("test/storage/server.js");
+    auto server = std::make_unique<test::HttpServer>();
 #endif
 
     testing::InitGoogleTest(&argc, argv);
diff --git a/test/test-files.json b/test/test-files.json
index 3a4ad95722..dbf81f031b 100644
--- a/test/test-files.json
+++ b/test/test-files.json
@@ -31,6 +31,7 @@
         "test/sprite/sprite_parser.test.cpp",
         "test/src/mbgl/test/fixture_log_observer.cpp",
         "test/src/mbgl/test/getrss.cpp",
+        "test/src/mbgl/test/http_server.cpp",
         "test/src/mbgl/test/sqlite3_test_fs.cpp",
         "test/src/mbgl/test/stub_file_source.cpp",
         "test/src/mbgl/test/test.cpp",