diff --git a/res/modules/internal/test.lua b/res/modules/internal/test.lua
new file mode 100644
index 000000000..a6ca7d096
--- /dev/null
+++ b/res/modules/internal/test.lua
@@ -0,0 +1,136 @@
+local __app = __vc_app
+
+local function get_node_center(node)
+    local pos = node.wpos
+    local size = node.size
+    return pos[1] + size[1] / 2, pos[2] + size[2] / 2
+end
+
+local function types_check_enum(value, enum)
+    if value == nil then
+        return true, nil
+    end
+    if type(value) ~= "string" then
+        return false, string.format("string expected [%s]", table.concat(table.keys(enum), "|"))
+    end
+    return true, nil
+end
+
+local function types_check_number(value)
+    if value == nil then
+        return true, nil
+    end
+    local value_type = type(value)
+    if value_type ~= "number" then
+        return false, string.format("number expected, got %s", value_type)
+    end
+end
+
+local function check_option(t, key, func, ...)
+    local value = t[key]
+    if value == nil then
+        return nil
+    end
+    local success, message = func(value, ...)
+    if not success then
+        error(string.format("invalid option '%s': %s", key, message))
+    end
+end
+
+local buttons_enum = {
+    left = 0,
+    right = 1,
+    middle = 2,
+}
+local no_options = {}
+
+local _tick = __app.tick
+local _set_button_pressed = test.set_button_pressed
+local _set_key_pressed = test.set_key_pressed
+local _enter_text = test.enter_text
+test.set_button_pressed = nil
+test.set_key_pressed = nil
+test.enter_text = nil
+
+function test.click(node, options)
+    options = options or no_options
+
+    check_option(options, 'button', types_check_enum, buttons_enum)
+    check_option(options, 'timeout', types_check_number)
+
+    local button = buttons_enum[options.button or 'left']
+    local timeout = options.timeout or 1000
+
+    local tm = time.precise_time()
+    while (time.precise_time() - tm) * 1000 < timeout do
+        if node.exists then
+            break
+        end
+        _tick()
+    end
+    if not node.exists then
+        error(string.format("timeout %s ms exceeded: element %s does not exists",
+            math.floor(timeout), string.escape(node.id)))
+    end
+
+    local center_x, center_y = get_node_center(node)
+    _set_button_pressed(button, center_x, center_y, true)
+    _tick()
+    _set_button_pressed(button, center_x, center_y, false)
+    _tick()
+end
+
+-- TODO: replace with resolving in C++ side
+function test.find_by_attr(node, attr, value)
+    if node[attr] == value then
+        return node
+    end
+    local i = 1
+    while true do
+        local subnode = node[i]
+        if subnode == nil then
+            break
+        end
+        local found = test.find_by_attr(subnode, attr, value)
+        if found then
+            return found
+        end
+        i = i + 1
+    end
+end
+
+function test.find_by_text(node, text)
+    return test.find_by_attr(node, "text", text)
+end
+
+function test.find_by_attr_presence(node, attr)
+    if node[attr] then
+        return node
+    end
+    local i = 1
+    while true do
+        local subnode = node[i]
+        if subnode == nil then
+            break
+        end
+        local found = test.find_by_attr_presence(subnode, attr)
+        if found then
+            return found
+        end
+        i = i + 1
+    end
+end
+
+function test.fill(node, text, options)
+    test.click(node, options)
+    __app.tick()
+    _enter_text(text)
+    test.press("enter")
+end
+
+function test.press(key)
+    _set_key_pressed(key, true)
+    __app.tick()
+    _set_key_pressed(key, false)
+    __app.tick()
+end
diff --git a/res/scripts/stdlib.lua b/res/scripts/stdlib.lua
index 093501d75..a1949c1e6 100644
--- a/res/scripts/stdlib.lua
+++ b/res/scripts/stdlib.lua
@@ -127,6 +127,10 @@ require "core:internal/extensions/inventory"
 asserts = require "core:internal/asserts"
 events = require "core:internal/events"
 
+if test then
+    require "core:internal/test"
+end
+
 function pack.unload(prefix)
     events.remove_by_prefix(prefix)
 end
diff --git a/src/logic/scripting/lua/libs/api_lua.hpp b/src/logic/scripting/lua/libs/api_lua.hpp
index e304d6dc1..123e1e532 100644
--- a/src/logic/scripting/lua/libs/api_lua.hpp
+++ b/src/logic/scripting/lua/libs/api_lua.hpp
@@ -44,6 +44,7 @@ extern const luaL_Reg posteffectslib[]; // gfx.posteffects
 extern const luaL_Reg quatlib[];
 extern const luaL_Reg randomlib[];
 extern const luaL_Reg compressionlib[];
+extern const luaL_Reg testlib[];
 extern const luaL_Reg text3dlib[]; // gfx.text3d
 extern const luaL_Reg timelib[];
 extern const luaL_Reg tomllib[];
diff --git a/src/logic/scripting/lua/libs/libtest.cpp b/src/logic/scripting/lua/libs/libtest.cpp
new file mode 100644
index 000000000..d6675deeb
--- /dev/null
+++ b/src/logic/scripting/lua/libs/libtest.cpp
@@ -0,0 +1,45 @@
+#include "api_lua.hpp"
+#include "engine/Engine.hpp"
+#include "window/input.hpp"
+
+#include <iostream>
+
+using namespace scripting;
+
+static int l_set_button_pressed(lua::State* L) {
+    int button = lua::touinteger(L, 1);
+    int x = lua::tointeger(L, 2);
+    int y = lua::tointeger(L, 3);
+    bool pressed = lua::toboolean(L, 4);
+    
+    auto& input = engine->getInput();
+    input.simulateCursorPos(x, y);
+    input.simulateClick(button, pressed);
+    return 0;
+}
+
+static int l_set_key_pressed(lua::State* L) {
+    auto key = lua::require_string(L, 1);
+    bool pressed = lua::toboolean(L, 2);
+    
+    auto& input = engine->getInput();
+    input.simulateKey(input_util::keycode_from(key), pressed);
+    return 0;
+}
+
+static int l_enter_text(lua::State* L) {
+    auto string = lua::require_wstring(L, 1);
+    
+    auto& input = engine->getInput();
+    for (auto chr : string) {
+        input.simulateCodepoint(chr);
+    }
+    return 0;
+}
+
+const luaL_Reg testlib[] = {
+    {"set_button_pressed", lua::wrap<l_set_button_pressed>},
+    {"set_key_pressed", lua::wrap<l_set_key_pressed>},
+    {"enter_text", lua::wrap<l_enter_text>},
+    {nullptr, nullptr}
+};
diff --git a/src/logic/scripting/lua/lua_engine.cpp b/src/logic/scripting/lua/lua_engine.cpp
index afb2f42eb..38b6a4b83 100644
--- a/src/logic/scripting/lua/lua_engine.cpp
+++ b/src/logic/scripting/lua/lua_engine.cpp
@@ -19,6 +19,7 @@ namespace {
     debug::Logger logger("lua-state");
     lua::State* main_thread = nullptr;
     bool headless_mode = false;
+    bool test_mode = false;
     const std::unordered_map<std::string, std::string>* project_args;
 }
 
@@ -69,12 +70,12 @@ static void create_libs(State* L, StateType stateType) {
     openlib(L, "yaml", yamllib);
 
     openlib(L, "__vc_app", applib);
-    lua::getglobal(L, "__vc_app");
-    lua::setregistry(L, "app");
+    getglobal(L, "__vc_app");
+    setregistry(L, "app");
 
     if (stateType == StateType::SCRIPT) {
-        lua::getregistry(L, "app");
-        lua::setglobal(L, "app");
+        getregistry(L, "app");
+        setglobal(L, "app");
     }
     if (stateType == StateType::BASE || stateType == StateType::SCRIPT) {
         openlib(L, "assets", assetslib);
@@ -99,6 +100,10 @@ static void create_libs(State* L, StateType stateType) {
         openlib(L, "__transform", transformlib);
     }
 
+    if (::test_mode) {
+        openlib(L, "test", testlib);
+    }
+
     addfunc(L, "print", lua::wrap<l_print>);
     addfunc(L, "crc32", lua::wrap<l_crc32>);
 }
@@ -191,6 +196,7 @@ void lua::initialize(const EnginePaths& paths, const CoreParameters& params) {
     logger.info() << LUAJIT_VERSION;
 
     headless_mode = params.headless;
+    test_mode = params.testMode;
     project_args = &params.projectArgs;
     main_thread = create_state(
         paths, params.headless ? StateType::SCRIPT : StateType::BASE
diff --git a/src/window/detail/GLFWWindow.cpp b/src/window/detail/GLFWWindow.cpp
index db3d67241..6f42258d8 100644
--- a/src/window/detail/GLFWWindow.cpp
+++ b/src/window/detail/GLFWWindow.cpp
@@ -165,17 +165,127 @@ inline constexpr short MOUSE_KEYS_OFFSET = 1024;
 
 static GLFWcursor* standard_cursors[static_cast<int>(CursorShape::LAST) + 1] = {};
 
-class GLFWInput : public Input {
+class BaseInput : public Input {
 public:
+    std::vector<uint> codepoints;
     int scroll = 0;
+
+    void onKeyCallback(int key, bool pressed) {
+        bool prevPressed = keys[key];
+        keys[key] = pressed;
+        frames[key] = currentFrame;
+        if (pressed && !prevPressed) {
+            const auto& callbacks = keyCallbacks.find(static_cast<Keycode>(key));
+            if (callbacks != keyCallbacks.end()) {
+                callbacks->second.notify();
+            }
+        }
+        if (pressed && key < MOUSE_KEYS_OFFSET) {
+            pressedKeys.push_back(static_cast<Keycode>(key));
+        }
+    }
+
+    void onMouseCallback(int button, bool pressed) {
+        int key = button + MOUSE_KEYS_OFFSET;
+        onKeyCallback(key, pressed);
+    }
+
+    bool isCursorLocked() const override {
+        return cursorLocked;
+    }
+
+    void setCursorPosition(double xpos, double ypos) {
+        if (cursorDrag) {
+            delta.x += xpos - cursor.x;
+            delta.y += ypos - cursor.y;
+        } else {
+            cursorDrag = true;
+        }
+        cursor.x = xpos;
+        cursor.y = ypos;
+    }
+
+    Bindings& getBindings() override {
+        return bindings;
+    }
+
+    const Bindings& getBindings() const override {
+        return bindings;
+    }
+
+    ObserverHandler addKeyCallback(Keycode key, KeyCallback callback) override {
+        return keyCallbacks[key].add(std::move(callback));
+    }
+
+    const std::vector<Keycode>& getPressedKeys() const override {
+        return pressedKeys;
+    }
+
+    const std::vector<uint>& getCodepoints() const override {
+        return codepoints;
+    }
+
+    CursorState getCursor() const override {
+        return {isCursorLocked(), cursor, delta};
+    }
+
+    int getScroll() override {
+        return scroll;
+    }
+
+    bool pressed(Keycode key) const override {
+        int keycode = static_cast<int>(key);
+        if (keycode < 0 || keycode >= KEYS_BUFFER_SIZE) {
+            return false;
+        }
+        return keys[keycode];
+    }
+    bool jpressed(Keycode keycode) const override {
+        return pressed(keycode) &&
+               frames[static_cast<int>(keycode)] == currentFrame;
+    }
+
+    bool clicked(Mousecode code) const override {
+        return pressed(
+            static_cast<Keycode>(MOUSE_KEYS_OFFSET + static_cast<int>(code))
+        );
+    }
+    bool jclicked(Mousecode code) const override {
+        return clicked(code) &&
+               frames[static_cast<int>(code) + MOUSE_KEYS_OFFSET] ==
+                   currentFrame;
+    }
+
+    void simulateKey(Keycode key, bool pressed) override {
+        onKeyCallback(static_cast<int>(key), pressed);
+    }
+
+    void simulateClick(int button, bool pressed) override {
+        onMouseCallback(static_cast<int>(button), pressed);
+    }
+
+    void simulateCursorPos(double xpos, double ypos) override {
+        setCursorPosition(xpos, ypos);
+    }
+    
+    void simulateCodepoint(uint codepoint) override {
+        codepoints.push_back(codepoint);
+    }
+protected:
     uint currentFrame = 0;
     uint frames[KEYS_BUFFER_SIZE] {};
-    std::vector<uint> codepoints;
     std::vector<Keycode> pressedKeys;
     Bindings bindings;
     bool keys[KEYS_BUFFER_SIZE] {};
     std::unordered_map<Keycode, util::HandlersList<>> keyCallbacks;
+    bool cursorLocked = false;
+    bool cursorDrag = false;
+    glm::vec2 delta {};
+    glm::vec2 cursor {};
+};
 
+class GLFWInput : public BaseInput {
+public:
     GLFWInput(GLFWwindow* window)
         : window(window) {
     }
@@ -225,26 +335,6 @@ public:
         }
     }
 
-    void onKeyCallback(int key, bool pressed) {
-        bool prevPressed = keys[key];
-        keys[key] = pressed;
-        frames[key] = currentFrame;
-        if (pressed && !prevPressed) {
-            const auto& callbacks = keyCallbacks.find(static_cast<Keycode>(key));
-            if (callbacks != keyCallbacks.end()) {
-                callbacks->second.notify();
-            }
-        }
-        if (pressed && key < MOUSE_KEYS_OFFSET) {
-            pressedKeys.push_back(static_cast<Keycode>(key));
-        }
-    }
-
-    void onMouseCallback(int button, bool pressed) {
-        int key = button + MOUSE_KEYS_OFFSET;
-        onKeyCallback(key, pressed);
-    }
-
     const char* getClipboardText() const override {
         return glfwGetClipboardString(window);
     }
@@ -253,41 +343,6 @@ public:
         glfwSetClipboardString(window, text);
     }
 
-    int getScroll() override {
-        return scroll;
-    }
-
-    bool pressed(Keycode key) const override {
-        int keycode = static_cast<int>(key);
-        if (keycode < 0 || keycode >= KEYS_BUFFER_SIZE) {
-            return false;
-        }
-        return keys[keycode];
-    }
-    bool jpressed(Keycode keycode) const override {
-        return pressed(keycode) &&
-               frames[static_cast<int>(keycode)] == currentFrame;
-    }
-
-    bool clicked(Mousecode code) const override {
-        return pressed(
-            static_cast<Keycode>(MOUSE_KEYS_OFFSET + static_cast<int>(code))
-        );
-    }
-    bool jclicked(Mousecode code) const override {
-        return clicked(code) &&
-               frames[static_cast<int>(code) + MOUSE_KEYS_OFFSET] ==
-                   currentFrame;
-    }
-
-    CursorState getCursor() const override {
-        return {isCursorLocked(), cursor, delta};
-    }
-
-    bool isCursorLocked() const override {
-        return cursorLocked;
-    }
-
     void toggleCursor() override {
         cursorDrag = false;
         if (cursorLocked) {
@@ -298,43 +353,8 @@ public:
         }
         cursorLocked = !cursorLocked;
     }
-
-    void setCursorPosition(double xpos, double ypos) {
-        if (cursorDrag) {
-            delta.x += xpos - cursor.x;
-            delta.y += ypos - cursor.y;
-        } else {
-            cursorDrag = true;
-        }
-        cursor.x = xpos;
-        cursor.y = ypos;
-    }
-
-    Bindings& getBindings() override {
-        return bindings;
-    }
-
-    const Bindings& getBindings() const override {
-        return bindings;
-    }
-
-    ObserverHandler addKeyCallback(Keycode key, KeyCallback callback) override {
-        return keyCallbacks[key].add(std::move(callback));
-    }
-
-    const std::vector<Keycode>& getPressedKeys() const override {
-        return pressedKeys;
-    }
-
-    const std::vector<uint>& getCodepoints() const override {
-        return codepoints;
-    }
 private:
     GLFWwindow* window;
-    bool cursorLocked = false;
-    bool cursorDrag = false;
-    glm::vec2 delta {};
-    glm::vec2 cursor {};
 };
 static_assert(!std::is_abstract<GLFWInput>());
 
diff --git a/src/window/input.hpp b/src/window/input.hpp
index 84c120409..59d663672 100644
--- a/src/window/input.hpp
+++ b/src/window/input.hpp
@@ -274,6 +274,11 @@ public:
     virtual bool clicked(Mousecode mousecode) const = 0;
     virtual bool jclicked(Mousecode mousecode) const = 0;
 
+    virtual void simulateKey(Keycode key, bool pressed) = 0;
+    virtual void simulateClick(int button, bool pressed) = 0;
+    virtual void simulateCursorPos(double xpos, double ypos) = 0;
+    virtual void simulateCodepoint(uint codepoint) = 0;
+
     virtual CursorState getCursor() const = 0;
 
     virtual bool isCursorLocked() const = 0;