organized unit tests

test/webfuse/tests/adapter/jsonrpc/test_is_request.cc

@@ -0,0 +1,112 @@
+#include <gtest/gtest.h>
+#include "webfuse/adapter/impl/jsonrpc/request.h"
+
+TEST(jsonrpc_is_request, request_with_object_params)
+{
+    json_t * request = json_object();
+    json_object_set_new(request, "method", json_string("method"));
+    json_object_set_new(request, "params", json_object());
+    json_object_set_new(request, "id", json_integer(42));
+
+    ASSERT_TRUE(wf_impl_jsonrpc_is_request(request));
+
+    json_decref(request);
+}
+
+TEST(jsonrpc_is_request, request_with_array_params)
+{
+    json_t * request = json_object();
+    json_object_set_new(request, "method", json_string("method"));
+    json_object_set_new(request, "params", json_array());
+    json_object_set_new(request, "id", json_integer(42));
+
+    ASSERT_TRUE(wf_impl_jsonrpc_is_request(request));
+
+    json_decref(request);
+}
+
+TEST(jsonrpc_is_request, null_request)
+{
+    ASSERT_FALSE(wf_impl_jsonrpc_is_request(nullptr));
+}
+
+TEST(jsonrpc_is_request, invalid_request)
+{
+    json_t * request = json_array();
+    json_array_append_new(request, json_string("method"));
+    json_array_append_new(request, json_object());
+    json_array_append_new(request, json_integer(42));
+
+    ASSERT_FALSE(wf_impl_jsonrpc_is_request(request));
+
+    json_decref(request);
+}
+
+TEST(jsonrpc_is_request, invalid_request_without_id)
+{
+    json_t * request = json_object();
+    json_object_set_new(request, "method", json_string("method"));
+    json_object_set_new(request, "params", json_object());
+
+    ASSERT_FALSE(wf_impl_jsonrpc_is_request(request));
+
+    json_decref(request);
+}
+
+TEST(jsonrpc_is_request, invalid_request_due_to_invalid_id)
+{
+    json_t * request = json_object();
+    json_object_set_new(request, "method", json_string("method"));
+    json_object_set_new(request, "params", json_object());
+    json_object_set_new(request, "id", json_string("42"));
+
+    ASSERT_FALSE(wf_impl_jsonrpc_is_request(request));
+
+    json_decref(request);
+}
+
+TEST(jsonrpc_is_request, invalid_request_without_method)
+{
+    json_t * request = json_object();
+    json_object_set_new(request, "params", json_object());
+    json_object_set_new(request, "id", json_integer(42));
+
+    ASSERT_FALSE(wf_impl_jsonrpc_is_request(request));
+
+    json_decref(request);
+}
+
+TEST(jsonrpc_is_request, invalid_request_due_to_invalid_method)
+{
+    json_t * request = json_object();
+    json_object_set_new(request, "method", json_integer(42));
+    json_object_set_new(request, "params", json_object());
+    json_object_set_new(request, "id", json_integer(42));
+
+    ASSERT_FALSE(wf_impl_jsonrpc_is_request(request));
+
+    json_decref(request);
+}
+
+TEST(jsonrpc_is_request, invalid_request_without_params)
+{
+    json_t * request = json_object();
+    json_object_set_new(request, "method", json_string("method"));
+    json_object_set_new(request, "id", json_integer(42));
+
+    ASSERT_FALSE(wf_impl_jsonrpc_is_request(request));
+
+    json_decref(request);
+}
+
+TEST(jsonrpc_is_request, invalid_request_due_to_invalid_params)
+{
+    json_t * request = json_object();
+    json_object_set_new(request, "methdo", json_string("method"));
+    json_object_set_new(request, "params", json_string("params"));
+    json_object_set_new(request, "id", json_integer(42));
+
+    ASSERT_FALSE(wf_impl_jsonrpc_is_request(request));
+
+    json_decref(request);
+}

test/webfuse/tests/adapter/jsonrpc/test_is_response.cc

@@ -0,0 +1,94 @@
+#include <gtest/gtest.h>
+#include "webfuse/adapter/impl/jsonrpc/response.h"
+
+TEST(jsonrpc_is_response, valid_result)
+{
+    json_t * message = json_object();
+    json_object_set_new(message, "result", json_object());
+    json_object_set_new(message, "id", json_integer(42));
+
+    ASSERT_TRUE(wf_impl_jsonrpc_is_response(message));
+
+    json_decref(message);
+}
+
+TEST(jsonrpc_is_response, valid_result_string)
+{
+    json_t * message = json_object();
+    json_object_set_new(message, "result", json_string("also valid"));
+    json_object_set_new(message, "id", json_integer(42));
+
+    ASSERT_TRUE(wf_impl_jsonrpc_is_response(message));
+
+    json_decref(message);
+}
+
+TEST(jsonrpc_is_response, valid_error)
+{
+    json_t * message = json_object();
+    json_object_set_new(message, "error", json_object());
+    json_object_set_new(message, "id", json_integer(42));
+
+    ASSERT_TRUE(wf_impl_jsonrpc_is_response(message));
+
+    json_decref(message);
+}
+
+TEST(jsonrpc_is_response, invalid_null)
+{
+    ASSERT_FALSE(wf_impl_jsonrpc_is_response(nullptr));
+}
+
+TEST(jsonrpc_is_response, invalid_message)
+{
+    json_t * message = json_array();
+    json_array_append_new(message, json_object());
+    json_array_append_new(message, json_integer(42));
+
+    ASSERT_FALSE(wf_impl_jsonrpc_is_response(message));
+
+    json_decref(message);
+}
+
+TEST(jsonrpc_is_response, invalid_missing_id)
+{
+    json_t * message = json_object();
+    json_object_set_new(message, "result", json_object());
+
+    ASSERT_FALSE(wf_impl_jsonrpc_is_response(message));
+
+    json_decref(message);
+}
+
+TEST(jsonrpc_is_response, invalid_id_wrong_type)
+{
+    json_t * message = json_object();
+    json_object_set_new(message, "result", json_object());
+    json_object_set_new(message, "id", json_string("42"));
+
+    ASSERT_FALSE(wf_impl_jsonrpc_is_response(message));
+
+    json_decref(message);
+}
+
+
+TEST(jsonrpc_is_response, invalid_missing_result_and_error)
+{
+    json_t * message = json_object();
+    json_object_set_new(message, "id", json_integer(42));
+
+    ASSERT_FALSE(wf_impl_jsonrpc_is_response(message));
+
+    json_decref(message);
+}
+
+TEST(jsonrpc_is_response, invalid_error_wrong_type)
+{
+    json_t * message = json_object();
+    json_object_set_new(message, "error", json_array());
+    json_object_set_new(message, "id", json_integer(42));
+
+    ASSERT_FALSE(wf_impl_jsonrpc_is_response(message));
+
+    json_decref(message);
+}

test/webfuse/tests/adapter/jsonrpc/test_proxy.cc

@@ -0,0 +1,393 @@
+#include <gtest/gtest.h>
+#include "webfuse/adapter/impl/jsonrpc/proxy.h"
+#include "webfuse/adapter/impl/time/timeout_manager.h"
+#include "webfuse/utils/msleep.hpp"
+
+using webfuse_test::msleep;
+
+#define WF_DEFAULT_TIMEOUT (10 * 1000)
+
+namespace
+{
+
+    struct SendContext
+    {
+        json_t * response;
+        bool result;
+        bool is_called;
+
+        explicit SendContext(bool result_ = true)
+        : response(nullptr)
+        , result(result_)
+        , is_called(false)
+        {
+        }
+
+        ~SendContext() 
+        {
+            if (nullptr != response)
+            {
+                json_decref(response);
+            }
+        }
+    };
+
+    bool jsonrpc_send(
+        json_t * request,
+        void * user_data)
+    {
+        SendContext * context = reinterpret_cast<SendContext*>(user_data);
+        context->is_called = true;
+        context->response = request;
+        json_incref(request);
+
+        return context->result;
+    }
+
+    struct FinishedContext
+    {
+        bool is_called;
+        wf_status status;
+        json_t * result;
+
+        FinishedContext()
+        : is_called(false)
+        , status(WF_BAD)
+        , result(nullptr)
+        {
+
+        }
+
+        ~FinishedContext()
+        {
+            if (nullptr != result)
+            {
+                json_decref(result);
+            }
+        }
+    };
+
+    void jsonrpc_finished(
+        void * user_data,
+        wf_status status,
+        struct json_t const * result)
+    {
+        FinishedContext * context = reinterpret_cast<FinishedContext*>(user_data);
+        context->is_called = true;
+        context->status = status;
+        context->result = json_deep_copy(result);
+    }
+}
+
+TEST(jsonrpc_proxy, init)
+{
+    struct wf_impl_timeout_manager timeout_manager;
+    wf_impl_timeout_manager_init(&timeout_manager);
+
+    SendContext context;
+    void * user_data = reinterpret_cast<void*>(&context);
+    struct wf_impl_jsonrpc_proxy proxy;
+    wf_impl_jsonrpc_proxy_init(&proxy, &timeout_manager, WF_DEFAULT_TIMEOUT, &jsonrpc_send, user_data);
+
+    wf_impl_jsonrpc_proxy_cleanup(&proxy);
+    wf_impl_timeout_manager_cleanup(&timeout_manager);
+
+    ASSERT_FALSE(context.is_called);
+}
+
+TEST(jsonrpc_proxy, invoke)
+{
+    struct wf_impl_timeout_manager timeout_manager;
+    wf_impl_timeout_manager_init(&timeout_manager);
+
+    SendContext send_context;
+    void * send_data = reinterpret_cast<void*>(&send_context);
+    struct wf_impl_jsonrpc_proxy proxy;
+    wf_impl_jsonrpc_proxy_init(&proxy, &timeout_manager, WF_DEFAULT_TIMEOUT, &jsonrpc_send, send_data);
+
+    FinishedContext finished_context;
+    void * finished_data = reinterpret_cast<void*>(&finished_context);
+    wf_impl_jsonrpc_proxy_invoke(&proxy, &jsonrpc_finished, finished_data, "foo", "si", "bar", 42);
+
+    ASSERT_TRUE(send_context.is_called);
+    ASSERT_TRUE(json_is_object(send_context.response));
+
+    json_t * method = json_object_get(send_context.response, "method");
+    ASSERT_TRUE(json_is_string(method));
+    ASSERT_STREQ("foo", json_string_value(method));
+
+    json_t * params = json_object_get(send_context.response, "params");
+    ASSERT_TRUE(json_is_array(params));
+    ASSERT_EQ(2, json_array_size(params));
+    ASSERT_TRUE(json_is_string(json_array_get(params, 0)));
+    ASSERT_STREQ("bar", json_string_value(json_array_get(params, 0)));
+    ASSERT_TRUE(json_is_integer(json_array_get(params, 1)));
+    ASSERT_EQ(42, json_integer_value(json_array_get(params, 1)));
+
+    json_t * id = json_object_get(send_context.response, "id");
+    ASSERT_TRUE(json_is_integer(id));
+
+    ASSERT_FALSE(finished_context.is_called);
+
+    wf_impl_jsonrpc_proxy_cleanup(&proxy);
+    wf_impl_timeout_manager_cleanup(&timeout_manager);
+
+    ASSERT_TRUE(finished_context.is_called);
+    ASSERT_FALSE(WF_GOOD == finished_context.status);
+}
+
+TEST(jsonrpc_proxy, invoke_calls_finish_if_send_fails)
+{
+    struct wf_impl_timeout_manager timeout_manager;
+    wf_impl_timeout_manager_init(&timeout_manager);
+
+    SendContext send_context(false);
+    void * send_data = reinterpret_cast<void*>(&send_context);
+    struct wf_impl_jsonrpc_proxy proxy;
+    wf_impl_jsonrpc_proxy_init(&proxy, &timeout_manager, WF_DEFAULT_TIMEOUT, &jsonrpc_send, send_data);
+
+    FinishedContext finished_context;
+    void * finished_data = reinterpret_cast<void*>(&finished_context);
+    wf_impl_jsonrpc_proxy_invoke(&proxy, &jsonrpc_finished, finished_data, "foo", "si", "bar", 42);
+
+    ASSERT_TRUE(send_context.is_called);
+    ASSERT_TRUE(json_is_object(send_context.response));
+
+    ASSERT_TRUE(finished_context.is_called);
+    ASSERT_FALSE(WF_GOOD == finished_context.status);
+
+    wf_impl_jsonrpc_proxy_cleanup(&proxy);
+    wf_impl_timeout_manager_cleanup(&timeout_manager);
+}
+
+TEST(jsonrpc_proxy, invoke_fails_if_another_request_is_pending)
+{
+    struct wf_impl_timeout_manager timeout_manager;
+    wf_impl_timeout_manager_init(&timeout_manager);
+
+    SendContext send_context;
+    void * send_data = reinterpret_cast<void*>(&send_context);
+    struct wf_impl_jsonrpc_proxy proxy;
+    wf_impl_jsonrpc_proxy_init(&proxy, &timeout_manager, WF_DEFAULT_TIMEOUT, &jsonrpc_send, send_data);
+
+    FinishedContext finished_context;
+    void * finished_data = reinterpret_cast<void*>(&finished_context);
+    wf_impl_jsonrpc_proxy_invoke(&proxy, &jsonrpc_finished, finished_data, "foo", "si", "bar", 42);
+
+    FinishedContext finished_context2;
+    void * finished_data2 = reinterpret_cast<void*>(&finished_context2);
+    wf_impl_jsonrpc_proxy_invoke(&proxy, &jsonrpc_finished, finished_data2, "foo", "");
+
+    ASSERT_TRUE(send_context.is_called);
+    ASSERT_TRUE(json_is_object(send_context.response));
+
+    ASSERT_FALSE(finished_context.is_called);
+
+    ASSERT_TRUE(finished_context2.is_called);
+    ASSERT_EQ(WF_BAD_BUSY, finished_context2.status);
+
+    wf_impl_jsonrpc_proxy_cleanup(&proxy);
+    wf_impl_timeout_manager_cleanup(&timeout_manager);
+}
+
+TEST(jsonrpc_proxy, invoke_fails_if_request_is_invalid)
+{
+    struct wf_impl_timeout_manager timeout_manager;
+    wf_impl_timeout_manager_init(&timeout_manager);
+
+    SendContext send_context;
+    void * send_data = reinterpret_cast<void*>(&send_context);
+    struct wf_impl_jsonrpc_proxy proxy;
+    wf_impl_jsonrpc_proxy_init(&proxy, &timeout_manager, WF_DEFAULT_TIMEOUT, &jsonrpc_send, send_data);
+
+    FinishedContext finished_context;
+    void * finished_data = reinterpret_cast<void*>(&finished_context);
+    wf_impl_jsonrpc_proxy_invoke(&proxy, &jsonrpc_finished, finished_data, "foo", "?", "error");
+
+    ASSERT_FALSE(send_context.is_called);
+
+    ASSERT_TRUE(finished_context.is_called);
+    ASSERT_EQ(WF_BAD, finished_context.status);
+
+    wf_impl_jsonrpc_proxy_cleanup(&proxy);
+    wf_impl_timeout_manager_cleanup(&timeout_manager);
+}
+
+TEST(jsonrpc_proxy, on_result)
+{
+    struct wf_impl_timeout_manager timeout_manager;
+    wf_impl_timeout_manager_init(&timeout_manager);
+
+    SendContext send_context;
+    void * send_data = reinterpret_cast<void*>(&send_context);
+    struct wf_impl_jsonrpc_proxy proxy;
+    wf_impl_jsonrpc_proxy_init(&proxy, &timeout_manager, WF_DEFAULT_TIMEOUT, &jsonrpc_send, send_data);
+
+    FinishedContext finished_context;
+    void * finished_data = reinterpret_cast<void*>(&finished_context);
+    wf_impl_jsonrpc_proxy_invoke(&proxy, &jsonrpc_finished, finished_data, "foo", "si", "bar", 42);
+
+    ASSERT_TRUE(send_context.is_called);
+    ASSERT_TRUE(json_is_object(send_context.response));
+
+    json_t * id = json_object_get(send_context.response, "id");
+    ASSERT_TRUE(json_is_number(id));
+
+    json_t * response = json_object();
+    json_object_set_new(response, "result", json_string("okay"));
+    json_object_set(response, "id", id);
+
+    wf_impl_jsonrpc_proxy_onresult(&proxy, response);
+    json_decref(response);
+
+    ASSERT_TRUE(finished_context.is_called);
+    ASSERT_EQ(WF_GOOD, finished_context.status);
+    ASSERT_TRUE(json_is_string(finished_context.result));
+    ASSERT_STREQ("okay", json_string_value(finished_context.result));
+
+    wf_impl_jsonrpc_proxy_cleanup(&proxy);
+    wf_impl_timeout_manager_cleanup(&timeout_manager);
+}
+
+TEST(jsonrpc_proxy, on_result_reject_response_with_unknown_id)
+{
+    struct wf_impl_timeout_manager timeout_manager;
+    wf_impl_timeout_manager_init(&timeout_manager);
+
+    SendContext send_context;
+    void * send_data = reinterpret_cast<void*>(&send_context);
+    struct wf_impl_jsonrpc_proxy proxy;
+    wf_impl_jsonrpc_proxy_init(&proxy, &timeout_manager, WF_DEFAULT_TIMEOUT, &jsonrpc_send, send_data);
+
+    FinishedContext finished_context;
+    void * finished_data = reinterpret_cast<void*>(&finished_context);
+    wf_impl_jsonrpc_proxy_invoke(&proxy, &jsonrpc_finished, finished_data, "foo", "si", "bar", 42);
+
+    ASSERT_TRUE(send_context.is_called);
+    ASSERT_TRUE(json_is_object(send_context.response));
+
+    json_t * id = json_object_get(send_context.response, "id");
+    ASSERT_TRUE(json_is_number(id));
+
+    json_t * response = json_object();
+    json_object_set_new(response, "result", json_string("okay"));
+    json_object_set_new(response, "id", json_integer(1 + json_integer_value(id)));
+
+    wf_impl_jsonrpc_proxy_onresult(&proxy, response);
+    json_decref(response);
+
+    ASSERT_FALSE(finished_context.is_called);
+
+    wf_impl_jsonrpc_proxy_cleanup(&proxy);
+    wf_impl_timeout_manager_cleanup(&timeout_manager);
+}
+
+TEST(jsonrpc_proxy, timeout)
+{
+    struct wf_impl_timeout_manager timeout_manager;
+    wf_impl_timeout_manager_init(&timeout_manager);
+
+    SendContext send_context;
+    void * send_data = reinterpret_cast<void*>(&send_context);
+    struct wf_impl_jsonrpc_proxy proxy;
+    wf_impl_jsonrpc_proxy_init(&proxy, &timeout_manager, 0, &jsonrpc_send, send_data);
+
+    FinishedContext finished_context;
+    void * finished_data = reinterpret_cast<void*>(&finished_context);
+    wf_impl_jsonrpc_proxy_invoke(&proxy, &jsonrpc_finished, finished_data, "foo", "si", "bar", 42);
+
+    ASSERT_TRUE(send_context.is_called);
+    ASSERT_TRUE(json_is_object(send_context.response));
+
+    msleep(10);
+    wf_impl_timeout_manager_check(&timeout_manager);
+
+    ASSERT_TRUE(finished_context.is_called);
+    ASSERT_EQ(WF_BAD_TIMEOUT, finished_context.status);
+
+    wf_impl_jsonrpc_proxy_cleanup(&proxy);
+    wf_impl_timeout_manager_cleanup(&timeout_manager);
+}
+
+TEST(jsonrpc_proxy, cleanup_pending_request)
+{
+    struct wf_impl_timeout_manager timeout_manager;
+    wf_impl_timeout_manager_init(&timeout_manager);
+
+    SendContext send_context;
+    void * send_data = reinterpret_cast<void*>(&send_context);
+    struct wf_impl_jsonrpc_proxy proxy;
+    wf_impl_jsonrpc_proxy_init(&proxy, &timeout_manager, 10, &jsonrpc_send, send_data);
+
+    FinishedContext finished_context;
+    void * finished_data = reinterpret_cast<void*>(&finished_context);
+    wf_impl_jsonrpc_proxy_invoke(&proxy, &jsonrpc_finished, finished_data, "foo", "si", "bar", 42);
+
+    ASSERT_TRUE(send_context.is_called);
+    ASSERT_TRUE(json_is_object(send_context.response));
+
+    ASSERT_FALSE(finished_context.is_called);
+    ASSERT_NE(nullptr, timeout_manager.timers);
+
+    wf_impl_jsonrpc_proxy_cleanup(&proxy);
+
+    ASSERT_TRUE(finished_context.is_called);
+    ASSERT_EQ(nullptr, timeout_manager.timers);
+
+    wf_impl_timeout_manager_cleanup(&timeout_manager);
+}
+
+
+
+TEST(jsonrpc_proxy, notify)
+{
+    struct wf_impl_timeout_manager timeout_manager;
+    wf_impl_timeout_manager_init(&timeout_manager);
+
+    SendContext send_context;
+    void * send_data = reinterpret_cast<void*>(&send_context);
+    struct wf_impl_jsonrpc_proxy proxy;
+    wf_impl_jsonrpc_proxy_init(&proxy, &timeout_manager, WF_DEFAULT_TIMEOUT, &jsonrpc_send, send_data);
+
+    wf_impl_jsonrpc_proxy_notify(&proxy, "foo", "si", "bar", 42);
+
+    ASSERT_TRUE(send_context.is_called);
+    ASSERT_TRUE(json_is_object(send_context.response));
+
+    json_t * method = json_object_get(send_context.response, "method");
+    ASSERT_TRUE(json_is_string(method));
+    ASSERT_STREQ("foo", json_string_value(method));
+
+    json_t * params = json_object_get(send_context.response, "params");
+    ASSERT_TRUE(json_is_array(params));
+    ASSERT_EQ(2, json_array_size(params));
+    ASSERT_TRUE(json_is_string(json_array_get(params, 0)));
+    ASSERT_STREQ("bar", json_string_value(json_array_get(params, 0)));
+    ASSERT_TRUE(json_is_integer(json_array_get(params, 1)));
+    ASSERT_EQ(42, json_integer_value(json_array_get(params, 1)));
+
+    json_t * id = json_object_get(send_context.response, "id");
+    ASSERT_EQ(nullptr, id);
+
+
+    wf_impl_jsonrpc_proxy_cleanup(&proxy);
+    wf_impl_timeout_manager_cleanup(&timeout_manager);
+}
+
+TEST(jsonrpc_proxy, notify_dont_send_invalid_request)
+{
+    struct wf_impl_timeout_manager timeout_manager;
+    wf_impl_timeout_manager_init(&timeout_manager);
+
+    SendContext send_context;
+    void * send_data = reinterpret_cast<void*>(&send_context);
+    struct wf_impl_jsonrpc_proxy proxy;
+    wf_impl_jsonrpc_proxy_init(&proxy, &timeout_manager, WF_DEFAULT_TIMEOUT, &jsonrpc_send, send_data);
+
+    wf_impl_jsonrpc_proxy_notify(&proxy, "foo", "?");
+
+    ASSERT_FALSE(send_context.is_called);
+
+    wf_impl_jsonrpc_proxy_cleanup(&proxy);
+    wf_impl_timeout_manager_cleanup(&timeout_manager);
+}

test/webfuse/tests/adapter/jsonrpc/test_request.cc

@@ -0,0 +1,102 @@
+#include <gtest/gtest.h>
+#include "webfuse/adapter/impl/jsonrpc/request.h"
+
+namespace
+{
+
+struct Context
+{
+    json_t * response;
+};
+
+bool jsonrpc_send(
+	json_t * request,
+    void * user_data)
+{
+   Context * context = reinterpret_cast<Context*>(user_data);
+   context->response = request;
+   json_incref(request);
+
+   return true;
+}
+
+}
+
+TEST(jsonrpc_request, create_dispose)
+{
+    Context context{nullptr};
+    void * user_data = reinterpret_cast<void*>(&context);
+
+    struct  wf_impl_jsonrpc_request * request = 
+            wf_impl_jsonrpc_request_create(42, &jsonrpc_send, user_data);
+
+    ASSERT_NE(nullptr, request);
+    ASSERT_EQ(user_data, wf_impl_jsonrpc_request_get_userdata(request));
+
+    wf_impl_jsonrpc_request_dispose(request);
+}
+
+TEST(jsonrpc_request, respond)
+{
+    Context context{nullptr};
+    void * user_data = reinterpret_cast<void*>(&context);
+
+    struct  wf_impl_jsonrpc_request * request = 
+            wf_impl_jsonrpc_request_create(42, &jsonrpc_send, user_data);
+
+    wf_impl_jsonrpc_respond(request, json_string("okay"));
+
+    ASSERT_NE(nullptr, context.response);
+
+
+    json_t * response = reinterpret_cast<json_t*>(context.response);
+    ASSERT_TRUE(json_is_object(response));
+    
+    json_t * id = json_object_get(response, "id");
+    ASSERT_TRUE(json_is_integer(id));
+    ASSERT_EQ(42, json_integer_value(id));
+
+    json_t * result = json_object_get(response, "result");
+    ASSERT_TRUE(json_is_string(result));
+    ASSERT_STREQ("okay", json_string_value(result));
+
+    ASSERT_EQ(nullptr, json_object_get(response, "error"));
+
+    json_decref(response);
+}
+
+TEST(jsonrpc_request, respond_error)
+{
+    Context context{nullptr};
+    void * user_data = reinterpret_cast<void*>(&context);
+
+    struct  wf_impl_jsonrpc_request * request = 
+            wf_impl_jsonrpc_request_create(42, &jsonrpc_send, user_data);
+
+    wf_impl_jsonrpc_respond_error(request, WF_BAD);
+
+    ASSERT_NE(nullptr, context.response);
+
+
+    json_t * response = reinterpret_cast<json_t*>(context.response);
+    ASSERT_TRUE(json_is_object(response));
+    
+    json_t * id = json_object_get(response, "id");
+    ASSERT_TRUE(json_is_integer(id));
+    ASSERT_EQ(42, json_integer_value(id));
+
+    ASSERT_EQ(nullptr, json_object_get(response, "result"));
+
+    json_t * err = json_object_get(response, "error");
+    ASSERT_TRUE(json_is_object(err));
+
+    json_t * err_code = json_object_get(err, "code");
+    ASSERT_TRUE(json_is_integer(err_code));
+    ASSERT_EQ(WF_BAD, json_integer_value(err_code));
+
+    json_t * err_message = json_object_get(err, "message");
+    ASSERT_TRUE(json_is_string(err_message));
+    ASSERT_STREQ("Bad", json_string_value(err_message));
+
+    json_decref(response);
+}

test/webfuse/tests/adapter/jsonrpc/test_response.cc

@@ -0,0 +1,56 @@
+#include <gtest/gtest.h>
+#include "webfuse/adapter/impl/jsonrpc/response.h"
+
+TEST(json_response, init_result)
+{
+    json_t * message = json_object();
+    json_object_set_new(message, "result", json_integer(47));
+    json_object_set_new(message, "id", json_integer(11));
+
+    struct wf_impl_jsonrpc_response response;
+    wf_impl_jsonrpc_response_init(&response, message);
+
+    ASSERT_EQ(WF_GOOD, response.status);
+    ASSERT_TRUE(json_is_integer(response.result));
+    ASSERT_EQ(47, json_integer_value(response.result));
+    ASSERT_EQ(11, response.id);
+
+    wf_impl_jsonrpc_response_cleanup(&response);
+    json_decref(message);
+}
+
+TEST(json_response, init_error)
+{
+    json_t * message = json_object();
+    json_t * err = json_object();
+    json_object_set_new(err, "code", json_integer(WF_BAD_ACCESS_DENIED));
+    json_object_set_new(err, "message", json_string("access denied"));
+    json_object_set_new(message, "error", err);
+    json_object_set_new(message, "id", json_integer(23));
+
+    struct wf_impl_jsonrpc_response response;
+    wf_impl_jsonrpc_response_init(&response, message);
+
+    ASSERT_EQ(WF_BAD_ACCESS_DENIED, response.status);
+    ASSERT_EQ(nullptr, response.result);
+    ASSERT_EQ(23, response.id);
+
+    wf_impl_jsonrpc_response_cleanup(&response);
+    json_decref(message);
+}
+
+TEST(json_response, init_format_error)
+{
+    json_t * message = json_object();
+    json_object_set_new(message, "id", json_integer(12));
+
+    struct wf_impl_jsonrpc_response response;
+    wf_impl_jsonrpc_response_init(&response, message);
+
+    ASSERT_EQ(WF_BAD_FORMAT, response.status);
+    ASSERT_EQ(nullptr, response.result);
+    ASSERT_EQ(12, response.id);
+
+    wf_impl_jsonrpc_response_cleanup(&response);
+    json_decref(message);
+}

test/webfuse/tests/adapter/jsonrpc/test_server.cc

@@ -0,0 +1,125 @@
+#include <gtest/gtest.h>
+#include "webfuse/adapter/impl/jsonrpc/server.h"
+#include "webfuse/adapter/impl/jsonrpc/request.h"
+
+namespace
+{
+    struct Context
+    {
+        json_t * response;
+        bool is_called;
+    };
+
+    bool jsonrpc_send(
+	    json_t * request,
+        void * user_data)
+    {
+        Context * context = reinterpret_cast<Context*>(user_data);
+        context->is_called = true;
+        context->response = request;
+        json_incref(request);
+
+        return true;
+    }
+
+    void sayHello(
+        struct wf_impl_jsonrpc_request * request,
+        char const * method_name,
+        json_t * params,
+        void * user_data)
+    {
+        (void) method_name;
+        (void) params;
+        (void) user_data;
+
+        json_t * result = json_string("Hello");
+        wf_impl_jsonrpc_respond(request, result);
+    }
+
+}
+
+TEST(jsonrpc_server, process_request)
+{
+    struct wf_impl_jsonrpc_server server;
+    wf_impl_jsonrpc_server_init(&server);
+    wf_impl_jsonrpc_server_add(&server, "sayHello", &sayHello, nullptr);
+
+    Context context{nullptr, false};
+    void * user_data = reinterpret_cast<void*>(&context);
+    json_t * request = json_object();
+    json_object_set_new(request, "method", json_string("sayHello"));
+    json_object_set_new(request, "params", json_array());
+    json_object_set_new(request, "id", json_integer(23));   
+    wf_impl_jsonrpc_server_process(&server, request, &jsonrpc_send, user_data);
+
+    ASSERT_TRUE(context.is_called);
+    ASSERT_NE(nullptr, context.response);
+    ASSERT_TRUE(json_is_object(context.response));
+
+    json_t * id = json_object_get(context.response, "id");
+    ASSERT_TRUE(json_is_integer(id));
+    ASSERT_EQ(23, json_integer_value(id));
+
+    json_t * result = json_object_get(context.response, "result");
+    ASSERT_TRUE(json_is_string(result));
+    ASSERT_STREQ("Hello", json_string_value(result));
+
+    json_decref(context.response);
+    json_decref(request);
+    wf_impl_jsonrpc_server_cleanup(&server); 
+}
+
+TEST(jsonrpc_server, invoke_unknown_method)
+{
+    struct wf_impl_jsonrpc_server server;
+    wf_impl_jsonrpc_server_init(&server);
+    wf_impl_jsonrpc_server_add(&server, "sayHello", &sayHello, nullptr);
+
+    Context context{nullptr, false};
+    void * user_data = reinterpret_cast<void*>(&context);
+    json_t * request = json_object();
+    json_object_set_new(request, "method", json_string("greet"));
+    json_object_set_new(request, "params", json_array());
+    json_object_set_new(request, "id", json_integer(42));   
+    wf_impl_jsonrpc_server_process(&server, request, &jsonrpc_send, user_data);
+
+    ASSERT_TRUE(context.is_called);
+    ASSERT_NE(nullptr, context.response);
+    ASSERT_TRUE(json_is_object(context.response));
+
+    json_t * id = json_object_get(context.response, "id");
+    ASSERT_TRUE(json_is_integer(id));
+    ASSERT_EQ(42, json_integer_value(id));
+
+    json_t * err = json_object_get(context.response, "error");
+    ASSERT_TRUE(json_is_object(err));
+
+    json_t * err_code = json_object_get(err, "code");
+    ASSERT_TRUE(json_is_integer(err_code));
+    ASSERT_EQ(WF_BAD_NOTIMPLEMENTED, json_integer_value(err_code));
+
+    json_t * err_message = json_object_get(err, "message");
+    ASSERT_TRUE(json_is_string(err_message));
+
+    json_decref(context.response);
+    json_decref(request);
+    wf_impl_jsonrpc_server_cleanup(&server); 
+}
+
+TEST(jsonrpc_server, skip_invalid_request)
+{
+    struct wf_impl_jsonrpc_server server;
+    wf_impl_jsonrpc_server_init(&server);
+
+    Context context{nullptr, false};
+    void * user_data = reinterpret_cast<void*>(&context);
+    json_t * request = json_object();
+    json_object_set_new(request, "method", json_string("sayHello"));
+    json_object_set_new(request, "params", json_array());
+    wf_impl_jsonrpc_server_process(&server, request, &jsonrpc_send, user_data);
+
+    ASSERT_FALSE(context.is_called);
+
+    json_decref(request);
+    wf_impl_jsonrpc_server_cleanup(&server); 
+}

test/webfuse/tests/adapter/jsonrpc/test_util.cc

@@ -0,0 +1,47 @@
+#include <gtest/gtest.h>
+#include "webfuse/adapter/impl/jsonrpc/util.h"
+
+TEST(jsonrpc_util, get_int)
+{
+    json_t * object = json_object();
+    json_object_set_new(object, "key", json_integer(23));
+    int value = wf_impl_json_get_int(object, "key", 42);
+    ASSERT_EQ(23, value);
+
+    json_decref(object);
+}
+
+TEST(jsonrpc_util, failed_to_get_null_object)
+{
+    int value = wf_impl_json_get_int(nullptr, "key", 42);
+    
+    ASSERT_EQ(42, value);
+}
+
+TEST(jsonrpc_util, failed_to_get_not_object)
+{
+    json_t * object = json_array();
+    int value = wf_impl_json_get_int(nullptr, "key", 42);    
+    ASSERT_EQ(42, value);
+
+    json_decref(object);
+}
+
+TEST(jsonrpc_util, failed_to_get_invalid_key)
+{
+    json_t * object = json_object();
+    int value = wf_impl_json_get_int(object, "key", 42);
+    ASSERT_EQ(42, value);
+
+    json_decref(object);
+}
+
+TEST(jsonrpc_util, failed_to_get_invalid_value_type)
+{
+    json_t * object = json_object();
+    json_object_set_new(object, "key", json_string("42"));
+    int value = wf_impl_json_get_int(object, "key", 42);
+    ASSERT_EQ(42, value);
+
+    json_decref(object);
+}