diff --git a/composer.json b/composer.json
index 20f442a..46763eb 100755
--- a/composer.json
+++ b/composer.json
@@ -6,7 +6,8 @@
     "homepage": "https://github.com/VKCOM/vk-php-sdk",
     "license": "MIT",
     "require": {
-        "php": ">=7.1"
+        "php": ">=7.1",
+        "ext-json": "*"
     },
     "require-dev": {
         "phpunit/phpunit": "^6",
diff --git a/src/VK/Tool/Messages/KeyboardConverter/Contracts/Convertible/ArrayInterface.php b/src/VK/Tool/Messages/KeyboardConverter/Contracts/Convertible/ArrayInterface.php
new file mode 100644
index 0000000..5cb1c71
--- /dev/null
+++ b/src/VK/Tool/Messages/KeyboardConverter/Contracts/Convertible/ArrayInterface.php
@@ -0,0 +1,7 @@
+<?php
+
+namespace VK\Tool\Messages\KeyboardConverter\Contracts\Convertible;
+
+interface ArrayInterface {
+    public function convert(): array;
+}
\ No newline at end of file
diff --git a/src/VK/Tool/Messages/KeyboardConverter/Contracts/Convertible/JsonInterface.php b/src/VK/Tool/Messages/KeyboardConverter/Contracts/Convertible/JsonInterface.php
new file mode 100644
index 0000000..cffe17b
--- /dev/null
+++ b/src/VK/Tool/Messages/KeyboardConverter/Contracts/Convertible/JsonInterface.php
@@ -0,0 +1,7 @@
+<?php
+
+namespace VK\Tool\Messages\KeyboardConverter\Contracts\Convertible;
+
+interface JsonInterface {
+    public function convert(): string;
+}
\ No newline at end of file
diff --git a/src/VK/Tool/Messages/KeyboardConverter/Contracts/Factory/KeyboardInterface.php b/src/VK/Tool/Messages/KeyboardConverter/Contracts/Factory/KeyboardInterface.php
new file mode 100644
index 0000000..3cc3ec4
--- /dev/null
+++ b/src/VK/Tool/Messages/KeyboardConverter/Contracts/Factory/KeyboardInterface.php
@@ -0,0 +1,11 @@
+<?php
+
+namespace VK\Tool\Messages\KeyboardConverter\Contracts\Factory;
+
+use VK\Tool\Messages\KeyboardConverter\Contracts\Keyboard;
+
+interface KeyboardInterface
+{
+    public function getTypeFactory(): Keyboard\Type\FactoryInterface;
+    public function getButtonFactory(): Keyboard\Button\FactoryInterface;
+}
\ No newline at end of file
diff --git a/src/VK/Tool/Messages/KeyboardConverter/Contracts/Factory/Template/CarouselInterface.php b/src/VK/Tool/Messages/KeyboardConverter/Contracts/Factory/Template/CarouselInterface.php
new file mode 100644
index 0000000..0e4d222
--- /dev/null
+++ b/src/VK/Tool/Messages/KeyboardConverter/Contracts/Factory/Template/CarouselInterface.php
@@ -0,0 +1,11 @@
+<?php
+
+namespace VK\Tool\Messages\KeyboardConverter\Contracts\Factory\Template;
+
+use VK\Tool\Messages\KeyboardConverter\Contracts\Template\Carousel;
+
+interface CarouselInterface
+{
+    public function getTypeFactory(): Carousel\Type\FactoryInterface;
+    public function getElementFactory(): Carousel\Element\FactoryInterface;
+}
\ No newline at end of file
diff --git a/src/VK/Tool/Messages/KeyboardConverter/Contracts/Factory/TemplateInterface.php b/src/VK/Tool/Messages/KeyboardConverter/Contracts/Factory/TemplateInterface.php
new file mode 100644
index 0000000..98d9d74
--- /dev/null
+++ b/src/VK/Tool/Messages/KeyboardConverter/Contracts/Factory/TemplateInterface.php
@@ -0,0 +1,8 @@
+<?php
+
+namespace VK\Tool\Messages\KeyboardConverter\Contracts\Factory;
+
+interface TemplateInterface
+{
+    public function getCarouselFactory(): Template\CarouselInterface;
+}
\ No newline at end of file
diff --git a/src/VK/Tool/Messages/KeyboardConverter/Contracts/FactoryInterface.php b/src/VK/Tool/Messages/KeyboardConverter/Contracts/FactoryInterface.php
new file mode 100644
index 0000000..9224e11
--- /dev/null
+++ b/src/VK/Tool/Messages/KeyboardConverter/Contracts/FactoryInterface.php
@@ -0,0 +1,9 @@
+<?php
+
+namespace VK\Tool\Messages\KeyboardConverter\Contracts;
+
+interface FactoryInterface
+{
+    public function getTemplateFactory(): Factory\TemplateInterface;
+    public function getKeyboardFactory(): Factory\KeyboardInterface;
+}
\ No newline at end of file
diff --git a/src/VK/Tool/Messages/KeyboardConverter/Contracts/Keyboard/Button/FactoryInterface.php b/src/VK/Tool/Messages/KeyboardConverter/Contracts/Keyboard/Button/FactoryInterface.php
new file mode 100644
index 0000000..0ba3565
--- /dev/null
+++ b/src/VK/Tool/Messages/KeyboardConverter/Contracts/Keyboard/Button/FactoryInterface.php
@@ -0,0 +1,14 @@
+<?php
+
+namespace VK\Tool\Messages\KeyboardConverter\Contracts\Keyboard\Button;
+
+use VK\Tool\Messages\KeyboardConverter\Object\Keyboard\Button;
+
+interface FactoryInterface
+{
+    public function app(string $label, int $appId, string $ownerId, string $hash): Button\App;
+    public function location(array $payload): Button\Location;
+    public function pay(string $hash): Button\Pay;
+    public function text(string $label,array $payload, string $color = Button\Text::COLOR_GREEN): Button\Text;
+    public function link(string $label, string $link, array $payload): Button\Link;
+}
\ No newline at end of file
diff --git a/src/VK/Tool/Messages/KeyboardConverter/Contracts/Keyboard/Type/FactoryInterface.php b/src/VK/Tool/Messages/KeyboardConverter/Contracts/Keyboard/Type/FactoryInterface.php
new file mode 100644
index 0000000..05cd157
--- /dev/null
+++ b/src/VK/Tool/Messages/KeyboardConverter/Contracts/Keyboard/Type/FactoryInterface.php
@@ -0,0 +1,11 @@
+<?php
+
+namespace VK\Tool\Messages\KeyboardConverter\Contracts\Keyboard\Type;
+
+use VK\Tool\Messages\KeyboardConverter\Object\Keyboard\Type;
+
+interface FactoryInterface
+{
+    public function basic(callable $callback, bool $oneTime = true): Type\Basic;
+    public function inline(callable $callback): Type\Inline;
+}
\ No newline at end of file
diff --git a/src/VK/Tool/Messages/KeyboardConverter/Contracts/Template/Carousel/Element/FactoryInterface.php b/src/VK/Tool/Messages/KeyboardConverter/Contracts/Template/Carousel/Element/FactoryInterface.php
new file mode 100644
index 0000000..0b1d9f4
--- /dev/null
+++ b/src/VK/Tool/Messages/KeyboardConverter/Contracts/Template/Carousel/Element/FactoryInterface.php
@@ -0,0 +1,23 @@
+<?php
+
+namespace VK\Tool\Messages\KeyboardConverter\Contracts\Template\Carousel\Element;
+
+use VK\Tool\Messages\KeyboardConverter\Object\Template\Carousel\Element;
+
+interface FactoryInterface
+{
+    public function openLink(
+        string $link,
+        array $buttons,
+        ?string $title = null,
+        ?string $description = null,
+        ?string $photoId = null
+    ): Element\OpenLink;
+
+    public function openPhoto(
+        array $buttons,
+        ?string $title = null,
+        ?string $description = null,
+        ?string $photoId = null
+    ): Element\OpenPhoto;
+}
\ No newline at end of file
diff --git a/src/VK/Tool/Messages/KeyboardConverter/Contracts/Template/Carousel/Type/FactoryInterface.php b/src/VK/Tool/Messages/KeyboardConverter/Contracts/Template/Carousel/Type/FactoryInterface.php
new file mode 100644
index 0000000..292bd90
--- /dev/null
+++ b/src/VK/Tool/Messages/KeyboardConverter/Contracts/Template/Carousel/Type/FactoryInterface.php
@@ -0,0 +1,10 @@
+<?php
+
+namespace VK\Tool\Messages\KeyboardConverter\Contracts\Template\Carousel\Type;
+
+use VK\Tool\Messages\KeyboardConverter\Object\Template\Carousel\Type\Basic;
+
+interface FactoryInterface
+{
+    public function basic(callable $callback): Basic;
+}
\ No newline at end of file
diff --git a/src/VK/Tool/Messages/KeyboardConverter/Converter.php b/src/VK/Tool/Messages/KeyboardConverter/Converter.php
new file mode 100644
index 0000000..bd1cd6a
--- /dev/null
+++ b/src/VK/Tool/Messages/KeyboardConverter/Converter.php
@@ -0,0 +1,52 @@
+<?php
+/**
+ * Created by PhpStorm.
+ * User: n0tm
+ * Date: 15.12.19
+ * Time: 19:21
+ */
+
+namespace VK\Tool\Messages\KeyboardConverter;
+
+class Converter
+{
+    /**
+     * @var Contracts\FactoryInterface
+     */
+    private $factory;
+
+    /**
+     * @var Object\Keyboard\Converter
+     */
+    private $keyboardConverter;
+
+    /**
+     * @var Object\Template\Carousel\Converter
+     */
+    private $carouselConverter;
+
+    public function __construct(Contracts\FactoryInterface $factory)
+    {
+        $this->factory = $factory;
+    }
+
+    public function keyboard(): Object\Keyboard\Converter
+    {
+        if ($this->keyboardConverter === null) {
+            $this->keyboardConverter = new Object\Keyboard\Converter($this->factory->getKeyboardFactory()->getTypeFactory());
+        }
+
+        return $this->keyboardConverter;
+    }
+
+    public function carousel(): Object\Template\Carousel\Converter
+    {
+        if ($this->carouselConverter === null) {
+            $this->carouselConverter = new Object\Template\Carousel\Converter(
+                $this->factory->getTemplateFactory()->getCarouselFactory()->getTypeFactory()
+            );
+        }
+
+        return $this->carouselConverter;
+    }
+}
\ No newline at end of file
diff --git a/src/VK/Tool/Messages/KeyboardConverter/Facade.php b/src/VK/Tool/Messages/KeyboardConverter/Facade.php
new file mode 100644
index 0000000..454b536
--- /dev/null
+++ b/src/VK/Tool/Messages/KeyboardConverter/Facade.php
@@ -0,0 +1,39 @@
+<?php
+
+namespace VK\Tool\Messages\KeyboardConverter;
+
+use VK\Tool\Messages\KeyboardConverter\Contracts\FactoryInterface;
+
+class Facade
+{
+    public static function createKeyboardBasic(callable $callback, bool $oneTime = true): string
+    {
+        return self::getConverter()
+            ->keyboard()
+            ->basic($callback, $oneTime);
+    }
+
+    public static function createKeyboardInline(callable $callback): string
+    {
+        return self::getConverter()
+            ->keyboard()
+            ->inline($callback);
+    }
+
+    public static function createCarousel(callable $callback): string
+    {
+        return self::getConverter()
+            ->carousel()
+            ->basic($callback);
+    }
+
+    private static function getConverter(): Converter
+    {
+        return new Converter(self::getFactory());
+    }
+
+    private static function getFactory(): FactoryInterface
+    {
+        return new Factory();
+    }
+}
\ No newline at end of file
diff --git a/src/VK/Tool/Messages/KeyboardConverter/Factory.php b/src/VK/Tool/Messages/KeyboardConverter/Factory.php
new file mode 100644
index 0000000..66678d7
--- /dev/null
+++ b/src/VK/Tool/Messages/KeyboardConverter/Factory.php
@@ -0,0 +1,37 @@
+<?php
+
+namespace VK\Tool\Messages\KeyboardConverter;
+
+use VK\Tool\Messages\KeyboardConverter\Contracts;
+
+class Factory implements Contracts\FactoryInterface
+{
+    /**
+     * @var Contracts\Factory\TemplateInterface
+     */
+    private $templateFactory;
+
+    /**
+     * @var Contracts\Factory\KeyboardInterface
+     */
+    private $keyboardFactory;
+
+    public function getTemplateFactory(): Contracts\Factory\TemplateInterface
+    {
+        if ($this->templateFactory === null) {
+            $this->templateFactory = new Factory\Template($this->getKeyboardFactory()->getButtonFactory());
+        }
+
+        return $this->templateFactory;
+    }
+
+    public function getKeyboardFactory(): Contracts\Factory\KeyboardInterface
+    {
+        if ($this->keyboardFactory === null) {
+            $this->keyboardFactory = new Factory\Keyboard();
+        }
+
+        return $this->keyboardFactory;
+    }
+
+}
\ No newline at end of file
diff --git a/src/VK/Tool/Messages/KeyboardConverter/Factory/Keyboard.php b/src/VK/Tool/Messages/KeyboardConverter/Factory/Keyboard.php
new file mode 100644
index 0000000..76feac3
--- /dev/null
+++ b/src/VK/Tool/Messages/KeyboardConverter/Factory/Keyboard.php
@@ -0,0 +1,37 @@
+<?php
+
+namespace VK\Tool\Messages\KeyboardConverter\Factory;
+
+use VK\Tool\Messages\KeyboardConverter\Contracts;
+use VK\Tool\Messages\KeyboardConverter\Object as VkObject;
+
+class Keyboard implements Contracts\Factory\KeyboardInterface
+{
+    /**
+     * @var Contracts\Keyboard\Type\FactoryInterface
+     */
+    private $typeFactory;
+
+    /**
+     * @var Contracts\Keyboard\Button\FactoryInterface
+     */
+    private $buttonFactory;
+
+    public function getTypeFactory(): Contracts\Keyboard\Type\FactoryInterface
+    {
+        if ($this->typeFactory === null) {
+            $this->typeFactory = new VkObject\Keyboard\Type\Factory($this->getButtonFactory());
+        }
+
+        return $this->typeFactory;
+    }
+
+    public function getButtonFactory(): Contracts\Keyboard\Button\FactoryInterface
+    {
+        if ($this->buttonFactory === null) {
+            $this->buttonFactory = new VkObject\Keyboard\Button\Factory();
+        }
+
+        return $this->buttonFactory;
+    }
+}
\ No newline at end of file
diff --git a/src/VK/Tool/Messages/KeyboardConverter/Factory/Template.php b/src/VK/Tool/Messages/KeyboardConverter/Factory/Template.php
new file mode 100644
index 0000000..0fa8e45
--- /dev/null
+++ b/src/VK/Tool/Messages/KeyboardConverter/Factory/Template.php
@@ -0,0 +1,32 @@
+<?php
+
+namespace VK\Tool\Messages\KeyboardConverter\Factory;
+
+use VK\Tool\Messages\KeyboardConverter\Contracts;
+
+class Template implements Contracts\Factory\TemplateInterface
+{
+    /**
+     * @var Template\Carousel
+     */
+    private $carouselFactory;
+
+    /**
+     * @var Contracts\Keyboard\Button\FactoryInterface
+     */
+    private $buttonFactory;
+
+    public function __construct(Contracts\Keyboard\Button\FactoryInterface $buttonFactory)
+    {
+        $this->buttonFactory = $buttonFactory;
+    }
+
+    public function getCarouselFactory(): Contracts\Factory\Template\CarouselInterface
+    {
+        if ($this->carouselFactory === null) {
+            $this->carouselFactory = new Template\Carousel($this->buttonFactory);
+        }
+
+        return $this->carouselFactory;
+    }
+}
\ No newline at end of file
diff --git a/src/VK/Tool/Messages/KeyboardConverter/Factory/Template/Carousel.php b/src/VK/Tool/Messages/KeyboardConverter/Factory/Template/Carousel.php
new file mode 100644
index 0000000..0ee71de
--- /dev/null
+++ b/src/VK/Tool/Messages/KeyboardConverter/Factory/Template/Carousel.php
@@ -0,0 +1,50 @@
+<?php
+
+namespace VK\Tool\Messages\KeyboardConverter\Factory\Template;
+
+use VK\Tool\Messages\KeyboardConverter\Contracts;
+use VK\Tool\Messages\KeyboardConverter\Object as VkObject;
+
+class Carousel implements Contracts\Factory\Template\CarouselInterface
+{
+    /**
+     * @var Contracts\Template\Carousel\Type\FactoryInterface
+     */
+    private $typeFactory;
+
+    /**
+     * @var Contracts\Template\Carousel\Element\FactoryInterface
+     */
+    private $elementFactory;
+
+    /**
+     * @var Contracts\Keyboard\Button\FactoryInterface
+     */
+    private $buttonFactory;
+
+    public function __construct(Contracts\Keyboard\Button\FactoryInterface $buttonFactory)
+    {
+        $this->buttonFactory = $buttonFactory;
+    }
+
+    public function getTypeFactory(): Contracts\Template\Carousel\Type\FactoryInterface
+    {
+        if ($this->typeFactory === null) {
+            $this->typeFactory = new VkObject\Template\Carousel\Type\Factory(
+                $this->getElementFactory(),
+                $this->buttonFactory
+            );
+        }
+
+        return $this->typeFactory;
+    }
+
+    public function getElementFactory(): Contracts\Template\Carousel\Element\FactoryInterface
+    {
+        if ($this->elementFactory === null) {
+            $this->elementFactory = new VkObject\Template\Carousel\Element\Factory();
+        }
+
+        return $this->elementFactory;
+    }
+}
\ No newline at end of file
diff --git a/src/VK/Tool/Messages/KeyboardConverter/Object/Keyboard/Button/AbstractButton.php b/src/VK/Tool/Messages/KeyboardConverter/Object/Keyboard/Button/AbstractButton.php
new file mode 100644
index 0000000..12e8e1e
--- /dev/null
+++ b/src/VK/Tool/Messages/KeyboardConverter/Object/Keyboard/Button/AbstractButton.php
@@ -0,0 +1,30 @@
+<?php
+
+namespace VK\Tool\Messages\KeyboardConverter\Object\Keyboard\Button;
+
+use VK\Tool\Messages\KeyboardConverter\Contracts\Convertible\ArrayInterface;
+
+abstract class AbstractButton implements ArrayInterface {
+
+    protected const KEY_ACTION      = 'action';
+    protected const KEY_ACTION_TYPE = 'type';
+
+    /**
+     * @var array
+     */
+    protected $button = [];
+
+    public function convert(): array {
+        $this->button[self::KEY_ACTION] = $this->convertAction();
+        return $this->button;
+    }
+
+    abstract protected function action(): array;
+    abstract protected function type(): string;
+
+    private function convertAction(): array {
+        $action = $this->action();
+        $action[self::KEY_ACTION_TYPE] = $this->type();
+        return $action;
+    }
+}
diff --git a/src/VK/Tool/Messages/KeyboardConverter/Object/Keyboard/Button/App.php b/src/VK/Tool/Messages/KeyboardConverter/Object/Keyboard/Button/App.php
new file mode 100644
index 0000000..0f8f746
--- /dev/null
+++ b/src/VK/Tool/Messages/KeyboardConverter/Object/Keyboard/Button/App.php
@@ -0,0 +1,46 @@
+<?php
+
+namespace VK\Tool\Messages\KeyboardConverter\Object\Keyboard\Button;
+
+class App extends AbstractButton {
+
+    /**
+     * @var string
+     */
+    private $label;
+
+    /**
+     * @var string
+     */
+    private $hash;
+
+    /**
+     * @var string
+     */
+    private $ownerId;
+
+    /**
+     * @var int
+     */
+    private $appId;
+
+    public function __construct(string $label, int $appId, string $ownerId, string $hash) {
+        $this->label   = $label;
+        $this->appId   = $appId;
+        $this->ownerId = $ownerId;
+        $this->hash    = $hash;
+    }
+
+    protected function action(): array {
+        return [
+            'app_id' => $this->appId,
+            'owner_id' => $this->ownerId,
+            'hash' => $this->hash,
+            'label' => $this->label
+        ];
+    }
+
+    protected function type(): string {
+        return 'open_app';
+    }
+}
\ No newline at end of file
diff --git a/src/VK/Tool/Messages/KeyboardConverter/Object/Keyboard/Button/Factory.php b/src/VK/Tool/Messages/KeyboardConverter/Object/Keyboard/Button/Factory.php
new file mode 100644
index 0000000..a97a07f
--- /dev/null
+++ b/src/VK/Tool/Messages/KeyboardConverter/Object/Keyboard/Button/Factory.php
@@ -0,0 +1,29 @@
+<?php
+
+namespace VK\Tool\Messages\KeyboardConverter\Object\Keyboard\Button;
+
+use VK\Tool\Messages\KeyboardConverter\Contracts\Keyboard\Button\FactoryInterface;
+
+class Factory implements FactoryInterface
+{
+    public function app(string $label, int $appId, string $ownerId, string $hash): App {
+        return new App($label, $appId, $ownerId, $hash);
+    }
+
+    public function location(array $payload): Location {
+        return new Location($payload);
+    }
+
+    public function pay(string $hash): Pay {
+        return new Pay($hash);
+    }
+
+    public function text(string $label,array $payload, string $color = Text::COLOR_GREEN): Text {
+        return new Text($label, $payload, $color);
+    }
+
+    public function link(string $label, string $link, array $payload): Link {
+        return new Link($label, $link, $payload);
+    }
+
+}
\ No newline at end of file
diff --git a/src/VK/Tool/Messages/KeyboardConverter/Object/Keyboard/Button/Link.php b/src/VK/Tool/Messages/KeyboardConverter/Object/Keyboard/Button/Link.php
new file mode 100644
index 0000000..41d967c
--- /dev/null
+++ b/src/VK/Tool/Messages/KeyboardConverter/Object/Keyboard/Button/Link.php
@@ -0,0 +1,49 @@
+<?php
+/**
+ * Created by PhpStorm.
+ * User: n0tm
+ * Date: 15.12.19
+ * Time: 1:05
+ */
+
+namespace VK\Tool\Messages\KeyboardConverter\Object\Keyboard\Button;
+
+class Link extends AbstractButton {
+
+    private const KEY_LINK    = 'link';
+    private const KEY_LABEL   = 'label';
+    private const KEY_PAYLOAD = 'payload';
+
+    /**
+     * @var string
+     */
+    private $link;
+
+    /**
+     * @var string
+     */
+    private $label;
+
+    /**
+     * @var array
+     */
+    private $payload;
+
+    public function __construct(string $label, string $link, array $payload = []) {
+        $this->label   = $label;
+        $this->link    = $link;
+        $this->payload = $payload;
+    }
+
+    protected function action(): array {
+        return [
+            self::KEY_LINK    => $this->link,
+            self::KEY_LABEL   => $this->label,
+            self::KEY_PAYLOAD => json_encode($this->payload, JSON_UNESCAPED_UNICODE)
+        ];
+    }
+
+    protected function type(): string {
+        return 'open_link';
+    }
+}
\ No newline at end of file
diff --git a/src/VK/Tool/Messages/KeyboardConverter/Object/Keyboard/Button/Location.php b/src/VK/Tool/Messages/KeyboardConverter/Object/Keyboard/Button/Location.php
new file mode 100644
index 0000000..f3a46f1
--- /dev/null
+++ b/src/VK/Tool/Messages/KeyboardConverter/Object/Keyboard/Button/Location.php
@@ -0,0 +1,26 @@
+<?php
+
+namespace VK\Tool\Messages\KeyboardConverter\Object\Keyboard\Button;
+
+class Location extends AbstractButton {
+
+    /**
+     * @var array
+     */
+    private $payload;
+
+    public function __construct(array $payload) {
+        $this->payload = $payload;
+    }
+
+    protected function action(): array {
+        return [
+            'payload' => json_encode($this->payload, JSON_UNESCAPED_UNICODE)
+        ];
+    }
+
+    protected function type(): string {
+        return 'location';
+
+    }
+}
\ No newline at end of file
diff --git a/src/VK/Tool/Messages/KeyboardConverter/Object/Keyboard/Button/Pay.php b/src/VK/Tool/Messages/KeyboardConverter/Object/Keyboard/Button/Pay.php
new file mode 100644
index 0000000..8c81a60
--- /dev/null
+++ b/src/VK/Tool/Messages/KeyboardConverter/Object/Keyboard/Button/Pay.php
@@ -0,0 +1,27 @@
+<?php
+
+namespace VK\Tool\Messages\KeyboardConverter\Object\Keyboard\Button;
+
+class Pay extends AbstractButton {
+
+    private const KEY_HASH = 'hash';
+
+    /**
+     * @var string
+     */
+    private $hash;
+
+    public function __construct(string $hash) {
+        $this->hash = $hash;
+    }
+
+    protected function action(): array {
+        return [
+            self::KEY_HASH => $this->hash
+        ];
+    }
+
+    protected function type(): string {
+        return 'vkpay';
+    }
+}
\ No newline at end of file
diff --git a/src/VK/Tool/Messages/KeyboardConverter/Object/Keyboard/Button/Text.php b/src/VK/Tool/Messages/KeyboardConverter/Object/Keyboard/Button/Text.php
new file mode 100644
index 0000000..5324a19
--- /dev/null
+++ b/src/VK/Tool/Messages/KeyboardConverter/Object/Keyboard/Button/Text.php
@@ -0,0 +1,40 @@
+<?php
+
+namespace VK\Tool\Messages\KeyboardConverter\Object\Keyboard\Button;
+
+class Text extends AbstractButton {
+
+    public const COLOR_BLUE  = 'primary';
+    public const COLOR_RED   = 'negative';
+    public const COLOR_GREEN = 'positive';
+    public const COLOR_GRAY  = 'secondary';
+
+    private const KEY_COLOR = 'color';
+
+    /**
+     * @var array
+     */
+    private $payload;
+
+    /**
+     * @var string
+     */
+    private $label;
+
+    public function __construct(string $label, array $payload, string $color = self::COLOR_GREEN) {
+        $this->label   = $label;
+        $this->payload = $payload;
+        $this->button[self::KEY_COLOR] = $color;
+    }
+
+    protected function action(): array {
+        return [
+            'payload' => json_encode($this->payload, JSON_UNESCAPED_UNICODE),
+            'label'   => $this->label
+        ];
+    }
+
+    protected function type(): string {
+        return 'text';
+    }
+}
\ No newline at end of file
diff --git a/src/VK/Tool/Messages/KeyboardConverter/Object/Keyboard/Converter.php b/src/VK/Tool/Messages/KeyboardConverter/Object/Keyboard/Converter.php
new file mode 100644
index 0000000..eba7deb
--- /dev/null
+++ b/src/VK/Tool/Messages/KeyboardConverter/Object/Keyboard/Converter.php
@@ -0,0 +1,28 @@
+<?php
+
+namespace VK\Tool\Messages\KeyboardConverter\Object\Keyboard;
+
+use VK\Tool\Messages\KeyboardConverter\Contracts\Keyboard\Type\FactoryInterface;
+
+class Converter
+{
+    /**
+     * @var FactoryInterface
+     */
+    private $typeFactory;
+
+    public function __construct(FactoryInterface $typeFactory)
+    {
+        $this->typeFactory = $typeFactory;
+    }
+
+    public function basic(callable $callback, bool $oneTime = true): string
+    {
+        return $this->typeFactory->basic($callback, $oneTime)->convert();
+    }
+
+    public function inline(callable $callback): string
+    {
+        return $this->typeFactory->inline($callback)->convert();
+    }
+}
\ No newline at end of file
diff --git a/src/VK/Tool/Messages/KeyboardConverter/Object/Keyboard/Type/AbstractType.php b/src/VK/Tool/Messages/KeyboardConverter/Object/Keyboard/Type/AbstractType.php
new file mode 100644
index 0000000..8fae4bd
--- /dev/null
+++ b/src/VK/Tool/Messages/KeyboardConverter/Object/Keyboard/Type/AbstractType.php
@@ -0,0 +1,39 @@
+<?php
+
+namespace VK\Tool\Messages\KeyboardConverter\Object\Keyboard\Type;
+
+use VK\Tool\Messages\KeyboardConverter\Contracts\Convertible\JsonInterface;
+use VK\Tool\Messages\KeyboardConverter\Object\Keyboard\Button\AbstractButton;
+
+abstract class AbstractType implements JsonInterface {
+
+    protected const KEY_BUTTONS = 'buttons';
+
+    /**
+     * @var array
+     */
+    protected $keyboard = [];
+
+    /**
+     * @var array
+     */
+    protected $buttons;
+
+    public function convert(): string {
+        $this->keyboard[self::KEY_BUTTONS] = $this->convertButtonsRecursive($this->buttons);
+        return json_encode($this->keyboard, JSON_UNESCAPED_UNICODE);
+    }
+
+    private function convertButtonsRecursive(array $buttons): array {
+        return array_map(function ($button): array {
+            if ($button instanceof AbstractButton) {
+                return $button->convert();
+            } elseif (is_array($button)) {
+                return $this->convertButtonsRecursive($button);
+            }
+
+            return [];
+        }, $buttons);
+    }
+
+}
\ No newline at end of file
diff --git a/src/VK/Tool/Messages/KeyboardConverter/Object/Keyboard/Type/Basic.php b/src/VK/Tool/Messages/KeyboardConverter/Object/Keyboard/Type/Basic.php
new file mode 100644
index 0000000..31c6087
--- /dev/null
+++ b/src/VK/Tool/Messages/KeyboardConverter/Object/Keyboard/Type/Basic.php
@@ -0,0 +1,20 @@
+<?php
+/**
+ * Created by PhpStorm.
+ * User: n0tm
+ * Date: 14.12.19
+ * Time: 18:00
+ */
+
+namespace VK\Tool\Messages\KeyboardConverter\Object\Keyboard\Type;
+
+class Basic extends AbstractType {
+
+    private const KEY_ONE_TIME = 'one_time';
+
+    public function __construct(array $buttons, bool $oneTime = true) {
+        $this->buttons = $buttons;
+        $this->keyboard[self::KEY_ONE_TIME] = $oneTime;
+    }
+
+}
\ No newline at end of file
diff --git a/src/VK/Tool/Messages/KeyboardConverter/Object/Keyboard/Type/Factory.php b/src/VK/Tool/Messages/KeyboardConverter/Object/Keyboard/Type/Factory.php
new file mode 100644
index 0000000..0a7fb60
--- /dev/null
+++ b/src/VK/Tool/Messages/KeyboardConverter/Object/Keyboard/Type/Factory.php
@@ -0,0 +1,39 @@
+<?php
+/**
+ * Created by PhpStorm.
+ * User: n0tm
+ * Date: 15.12.19
+ * Time: 0:25
+ */
+
+namespace VK\Tool\Messages\KeyboardConverter\Object\Keyboard\Type;
+
+use VK\Tool\Messages\KeyboardConverter\Contracts\Keyboard;
+
+class Factory implements Keyboard\Type\FactoryInterface {
+
+    /**
+     * @var Keyboard\Button\FactoryInterface
+     */
+    private $buttonFactory;
+
+    public function __construct(Keyboard\Button\FactoryInterface $buttonFactory)
+    {
+        $this->buttonFactory = $buttonFactory;
+    }
+
+    public function basic(callable $callback, bool $oneTime = true): Basic
+    {
+        return new Basic($this->callUserFunctionWithButtonsFactory($callback), $oneTime);
+    }
+
+    public function inline(callable $callback): Inline
+    {
+        return new Inline($this->callUserFunctionWithButtonsFactory($callback));
+    }
+
+    private function callUserFunctionWithButtonsFactory(callable $function): array
+    {
+        return call_user_func($function, $this->buttonFactory);
+    }
+}
\ No newline at end of file
diff --git a/src/VK/Tool/Messages/KeyboardConverter/Object/Keyboard/Type/Inline.php b/src/VK/Tool/Messages/KeyboardConverter/Object/Keyboard/Type/Inline.php
new file mode 100644
index 0000000..ab40832
--- /dev/null
+++ b/src/VK/Tool/Messages/KeyboardConverter/Object/Keyboard/Type/Inline.php
@@ -0,0 +1,14 @@
+<?php
+
+namespace VK\Tool\Messages\KeyboardConverter\Object\Keyboard\Type;
+
+class Inline extends AbstractType {
+
+    private const KEY_INLINE = 'inline';
+
+    public function __construct(array $buttons) {
+        $this->buttons = $buttons;
+        $this->keyboard[self::KEY_INLINE] = true;
+    }
+
+}
\ No newline at end of file
diff --git a/src/VK/Tool/Messages/KeyboardConverter/Object/Template/Carousel/Converter.php b/src/VK/Tool/Messages/KeyboardConverter/Object/Template/Carousel/Converter.php
new file mode 100644
index 0000000..7de3c1c
--- /dev/null
+++ b/src/VK/Tool/Messages/KeyboardConverter/Object/Template/Carousel/Converter.php
@@ -0,0 +1,23 @@
+<?php
+
+namespace VK\Tool\Messages\KeyboardConverter\Object\Template\Carousel;
+
+use VK\Tool\Messages\KeyboardConverter\Contracts\Template\Carousel\Type\FactoryInterface;
+
+class Converter
+{
+    /**
+     * @var FactoryInterface
+     */
+    private $carouselTypeFactory;
+
+    public function __construct(FactoryInterface $carouselTypeFactory)
+    {
+        $this->carouselTypeFactory = $carouselTypeFactory;
+    }
+
+    public function basic(callable $callback): string
+    {
+        return $this->carouselTypeFactory->basic($callback)->convert();
+    }
+}
\ No newline at end of file
diff --git a/src/VK/Tool/Messages/KeyboardConverter/Object/Template/Carousel/Element/AbstractElement.php b/src/VK/Tool/Messages/KeyboardConverter/Object/Template/Carousel/Element/AbstractElement.php
new file mode 100644
index 0000000..2906533
--- /dev/null
+++ b/src/VK/Tool/Messages/KeyboardConverter/Object/Template/Carousel/Element/AbstractElement.php
@@ -0,0 +1,64 @@
+<?php
+/**
+ * Created by PhpStorm.
+ * User: n0tm
+ * Date: 15.12.19
+ * Time: 2:02
+ */
+
+namespace VK\Tool\Messages\KeyboardConverter\Object\Template\Carousel\Element;
+
+use VK\Tool\Messages\KeyboardConverter\Contracts\Convertible\ArrayInterface;
+use VK\Tool\Messages\KeyboardConverter\Object\Keyboard\Button\AbstractButton;
+
+abstract class AbstractElement implements ArrayInterface {
+
+    private const KEY_ACTION      = 'action';
+    private const KEY_ACTION_TYPE = 'type';
+    private const KEY_TITLE       = 'title';
+    private const KEY_DESCRIPTION = 'description';
+    private const KEY_PHOTO_ID    = 'photo_id';
+    private const KEY_BUTTONS     = 'buttons';
+
+    /**
+     * @var array
+     */
+    protected $element = [];
+
+    public function __construct(array $buttons, ?string $title = null, ?string $description = null, ?string $photoId = null) {
+        $this->element[self::KEY_BUTTONS] = array_map(function ($button): array {
+            if ($button instanceof AbstractButton) {
+                return $button->convert();
+            }
+
+            return $button;
+        }, $buttons);
+
+        if ($title !== null) {
+            $this->element[self::KEY_TITLE] = $title;
+        }
+
+        if ($description !== null) {
+            $this->element[self::KEY_DESCRIPTION] = $description;
+        }
+
+        if ($photoId !== null) {
+            $this->element[self::KEY_PHOTO_ID] = $photoId;
+        }
+
+    }
+
+    public function convert(): array {
+        $this->element[self::KEY_ACTION] = $this->convertAction();
+        return $this->element;
+    }
+
+    abstract protected function action(): array;
+    abstract protected function type(): string;
+
+    private function convertAction(): array {
+        $action = $this->action();
+        $action[self::KEY_ACTION_TYPE] = $this->type();
+        return $action;
+    }
+}
diff --git a/src/VK/Tool/Messages/KeyboardConverter/Object/Template/Carousel/Element/Factory.php b/src/VK/Tool/Messages/KeyboardConverter/Object/Template/Carousel/Element/Factory.php
new file mode 100644
index 0000000..ff1b0d2
--- /dev/null
+++ b/src/VK/Tool/Messages/KeyboardConverter/Object/Template/Carousel/Element/Factory.php
@@ -0,0 +1,33 @@
+<?php
+/**
+ * Created by PhpStorm.
+ * User: n0tm
+ * Date: 15.12.19
+ * Time: 2:57
+ */
+
+namespace VK\Tool\Messages\KeyboardConverter\Object\Template\Carousel\Element;
+
+use VK\Tool\Messages\KeyboardConverter\Contracts\Template\Carousel\Element\FactoryInterface;
+
+class Factory implements FactoryInterface {
+
+    public function openLink(
+        string $link,
+        array $buttons,
+        ?string $title = null,
+        ?string $description = null,
+        ?string $photoId = null
+    ): OpenLink {
+        return new OpenLink($link, $buttons, $title, $description, $photoId);
+    }
+
+    public function openPhoto(
+        array $buttons,
+        ?string $title = null,
+        ?string $description = null,
+        ?string $photoId = null
+    ): OpenPhoto {
+        return new OpenPhoto($buttons, $title, $description, $photoId);
+    }
+}
\ No newline at end of file
diff --git a/src/VK/Tool/Messages/KeyboardConverter/Object/Template/Carousel/Element/OpenLink.php b/src/VK/Tool/Messages/KeyboardConverter/Object/Template/Carousel/Element/OpenLink.php
new file mode 100644
index 0000000..b8232eb
--- /dev/null
+++ b/src/VK/Tool/Messages/KeyboardConverter/Object/Template/Carousel/Element/OpenLink.php
@@ -0,0 +1,35 @@
+<?php
+/**
+ * Created by PhpStorm.
+ * User: n0tm
+ * Date: 15.12.19
+ * Time: 2:33
+ */
+
+namespace VK\Tool\Messages\KeyboardConverter\Object\Template\Carousel\Element;
+
+
+class OpenLink extends AbstractElement {
+
+    private const KEY_LINK = 'link';
+
+    /**
+     * @var string
+     */
+    private $link;
+
+    public function __construct(string $link, array $buttons, ?string $title = null, ?string $description = null, ?string $photoId = null) {
+        $this->link = $link;
+        parent::__construct($buttons, $title, $description, $photoId);
+    }
+
+    protected function action(): array {
+        return [
+            self::KEY_LINK => $this->link
+        ];
+    }
+
+    protected function type(): string {
+        return 'open_link';
+    }
+}
\ No newline at end of file
diff --git a/src/VK/Tool/Messages/KeyboardConverter/Object/Template/Carousel/Element/OpenPhoto.php b/src/VK/Tool/Messages/KeyboardConverter/Object/Template/Carousel/Element/OpenPhoto.php
new file mode 100644
index 0000000..c114e35
--- /dev/null
+++ b/src/VK/Tool/Messages/KeyboardConverter/Object/Template/Carousel/Element/OpenPhoto.php
@@ -0,0 +1,21 @@
+<?php
+/**
+ * Created by PhpStorm.
+ * User: n0tm
+ * Date: 15.12.19
+ * Time: 2:33
+ */
+
+namespace VK\Tool\Messages\KeyboardConverter\Object\Template\Carousel\Element;
+
+
+class OpenPhoto extends AbstractElement {
+
+    protected function action(): array {
+        return [];
+    }
+
+    protected function type(): string {
+        return 'open_photo';
+    }
+}
\ No newline at end of file
diff --git a/src/VK/Tool/Messages/KeyboardConverter/Object/Template/Carousel/Type/AbstractType.php b/src/VK/Tool/Messages/KeyboardConverter/Object/Template/Carousel/Type/AbstractType.php
new file mode 100644
index 0000000..6c47923
--- /dev/null
+++ b/src/VK/Tool/Messages/KeyboardConverter/Object/Template/Carousel/Type/AbstractType.php
@@ -0,0 +1,40 @@
+<?php
+/**
+ * Created by PhpStorm.
+ * User: n0tm
+ * Date: 14.12.19
+ * Time: 17:59
+ */
+
+namespace VK\Tool\Messages\KeyboardConverter\Object\Template\Carousel\Type;
+
+use VK\Tool\Messages\KeyboardConverter\Contracts\Convertible\JsonInterface;
+use VK\Tool\Messages\KeyboardConverter\Object\Template\Carousel\Element\AbstractElement;
+
+abstract class AbstractType implements JsonInterface {
+
+    protected const KEY_ELEMENTS = 'elements';
+    protected const KEY_TYPE     = 'type';
+
+    private const TYPE = 'carousel';
+
+    /**
+     * @var array
+     */
+    protected $template = [];
+
+    /**
+     * @var AbstractElement[]
+     */
+    protected $elements;
+
+
+    public function convert(): string {
+        $this->template[self::KEY_ELEMENTS] = array_map(function (AbstractElement $element): array {
+            return $element->convert();
+        }, $this->elements);
+        $this->template[self::KEY_TYPE] = self::TYPE;
+        return json_encode($this->template, JSON_UNESCAPED_UNICODE);
+    }
+
+}
\ No newline at end of file
diff --git a/src/VK/Tool/Messages/KeyboardConverter/Object/Template/Carousel/Type/Basic.php b/src/VK/Tool/Messages/KeyboardConverter/Object/Template/Carousel/Type/Basic.php
new file mode 100644
index 0000000..6cc0c39
--- /dev/null
+++ b/src/VK/Tool/Messages/KeyboardConverter/Object/Template/Carousel/Type/Basic.php
@@ -0,0 +1,16 @@
+<?php
+/**
+ * Created by PhpStorm.
+ * User: n0tm
+ * Date: 15.12.19
+ * Time: 0:17
+ */
+
+namespace VK\Tool\Messages\KeyboardConverter\Object\Template\Carousel\Type;
+
+class Basic extends AbstractType {
+
+    public function __construct(array $elements) {
+        $this->elements = $elements;
+    }
+}
\ No newline at end of file
diff --git a/src/VK/Tool/Messages/KeyboardConverter/Object/Template/Carousel/Type/Factory.php b/src/VK/Tool/Messages/KeyboardConverter/Object/Template/Carousel/Type/Factory.php
new file mode 100644
index 0000000..3e840e1
--- /dev/null
+++ b/src/VK/Tool/Messages/KeyboardConverter/Object/Template/Carousel/Type/Factory.php
@@ -0,0 +1,41 @@
+<?php
+/**
+ * Created by PhpStorm.
+ * User: n0tm
+ * Date: 15.12.19
+ * Time: 2:58
+ */
+
+namespace VK\Tool\Messages\KeyboardConverter\Object\Template\Carousel\Type;
+
+use VK\Tool\Messages\KeyboardConverter\Contracts\Template\Carousel;
+use VK\Tool\Messages\KeyboardConverter\Contracts\Keyboard;
+
+class Factory implements Carousel\Type\FactoryInterface
+{
+    /**
+     * @var Carousel\Element\FactoryInterface
+     */
+    private $elementFactory;
+
+    /**
+     * @var Keyboard\Button\FactoryInterface
+     */
+    private $buttonFactory;
+
+    public function __construct(Carousel\Element\FactoryInterface $elementFactory, Keyboard\Button\FactoryInterface $buttonFactory)
+    {
+        $this->elementFactory = $elementFactory;
+        $this->buttonFactory  = $buttonFactory;
+    }
+
+    public function basic(callable $callback): Basic
+    {
+        return new Basic($this->callUserFunctionWithElementsFactory($callback));
+    }
+
+    private function callUserFunctionWithElementsFactory(callable $function): array
+    {
+        return call_user_func($function, $this->elementFactory, $this->buttonFactory);
+    }
+}
\ No newline at end of file
diff --git a/src/VK/Tool/Messages/KeyboardConverter/Object/Template/Converter.php b/src/VK/Tool/Messages/KeyboardConverter/Object/Template/Converter.php
new file mode 100644
index 0000000..00f3118
--- /dev/null
+++ b/src/VK/Tool/Messages/KeyboardConverter/Object/Template/Converter.php
@@ -0,0 +1,13 @@
+<?php
+
+namespace VK\Tool\Messages\KeyboardConverter\Object\Template;
+
+use VK\Tool\Messages\KeyboardConverter\Contracts\Template\Carousel\Type\FactoryInterface;
+
+class Converter
+{
+    public function carousel(FactoryInterface $factory): Carousel\Converter
+    {
+        return new Carousel\Converter($factory);
+    }
+}
\ No newline at end of file
diff --git a/tests/KeyboardConverter/ConverterTest.php b/tests/KeyboardConverter/ConverterTest.php
new file mode 100644
index 0000000..22cf506
--- /dev/null
+++ b/tests/KeyboardConverter/ConverterTest.php
@@ -0,0 +1,68 @@
+<?php
+
+namespace Test\KeyboardConverter;
+
+use PHPUnit\Framework\MockObject\MockObject;
+use PHPUnit\Framework\TestCase;
+use VK\Tool\Messages\KeyboardConverter\Contracts;
+use VK\Tool\Messages\KeyboardConverter\Converter;
+
+class ConverterTest extends TestCase
+{
+    /**
+     * @var Converter
+     */
+    private $converter;
+
+    /**
+     * @var Contracts\FactoryInterface|MockObject
+     */
+    private $factory;
+
+    public function setUp(): void
+    {
+        $this->factory = $this->createMock(Contracts\FactoryInterface::class);
+        $this->converter = new Converter($this->factory);
+    }
+
+    public function testKeyboard(): void
+    {
+        $keyboardFactory = $this->createMock(Contracts\Factory\KeyboardInterface::class);
+        $this->factory
+            ->method('getKeyboardFactory')
+            ->willReturn($keyboardFactory);
+
+        $this->factory
+            ->expects($this->once())
+            ->method('getKeyboardFactory');
+        $keyboardFactory
+            ->expects($this->once())
+            ->method('getTypeFactory');
+
+        $keyboard = $this->converter->keyboard();
+        $this->assertSame($keyboard, $this->converter->keyboard());
+    }
+
+    public function testCarousel(): void
+    {
+        $templateFactory = $this->createMock(Contracts\Factory\TemplateInterface::class);
+        $this->factory
+            ->method('getTemplateFactory')
+            ->willReturn($templateFactory);
+
+        $carouselFactory = $this->createMock(Contracts\Factory\Template\CarouselInterface::class);
+        $templateFactory
+            ->expects($this->once())
+            ->method('getCarouselFactory')
+            ->willReturn($carouselFactory);
+
+        $typeFactory = $this->createMock(Contracts\Template\Carousel\Type\FactoryInterface::class);
+        $carouselFactory
+            ->expects($this->once())
+            ->method('getTypeFactory')
+            ->willReturn($typeFactory);
+
+        $carousel = $this->converter->carousel();
+        $this->assertSame($carousel, $this->converter->carousel());
+    }
+}
diff --git a/tests/KeyboardConverter/Factory/KeyboardTest.php b/tests/KeyboardConverter/Factory/KeyboardTest.php
new file mode 100644
index 0000000..f78de5f
--- /dev/null
+++ b/tests/KeyboardConverter/Factory/KeyboardTest.php
@@ -0,0 +1,34 @@
+<?php
+
+namespace Test\KeyboardConverter\Factory;
+
+use PHPUnit\Framework\MockObject\MockObject;
+use VK\Tool\Messages\KeyboardConverter\Factory;
+use PHPUnit\Framework\TestCase;
+use VK\Tool\Messages\KeyboardConverter\Object\Keyboard;
+
+class KeyboardTest extends TestCase
+{
+    public function testGetTypeFactory(): void
+    {
+        /** @var Factory\Keyboard|MockObject $keyboard */
+        $keyboard = $this->getMockBuilder(Factory\Keyboard::class)
+            ->setMethodsExcept(['getTypeFactory'])
+            ->getMock();
+        $keyboard
+            ->expects($this->once())
+            ->method('getButtonFactory');
+
+        $typeFactory = $keyboard->getTypeFactory();
+        $this->assertInstanceOf(Keyboard\Type\Factory::class, $typeFactory);
+        $this->assertSame($typeFactory, $keyboard->getTypeFactory());
+    }
+
+    public function testGetButtonFactory(): void
+    {
+        $keyboard = new Factory\Keyboard();
+        $buttonFactory = $keyboard->getButtonFactory();
+        $this->assertInstanceOf(Keyboard\Button\Factory::class, $buttonFactory);
+        $this->assertSame($buttonFactory, $keyboard->getButtonFactory());
+    }
+}
diff --git a/tests/KeyboardConverter/Factory/Template/CarouselTest.php b/tests/KeyboardConverter/Factory/Template/CarouselTest.php
new file mode 100644
index 0000000..93a8601
--- /dev/null
+++ b/tests/KeyboardConverter/Factory/Template/CarouselTest.php
@@ -0,0 +1,46 @@
+<?php
+
+namespace Test\KeyboardConverter\Factory\Template;
+
+use PHPUnit\Framework\MockObject\MockObject;
+use VK\Tool\Messages\KeyboardConverter\Contracts\Keyboard\Button\FactoryInterface;
+use VK\Tool\Messages\KeyboardConverter\Factory\Template\Carousel;
+use VK\Tool\Messages\KeyboardConverter\Object as VkObject;
+use PHPUnit\Framework\TestCase;
+
+class CarouselTest extends TestCase
+{
+    /**
+     * @var FactoryInterface
+     */
+    private $buttonFactory;
+
+    public function setUp(): void
+    {
+        $this->buttonFactory = $this->createMock(FactoryInterface::class);
+    }
+
+    public function testGetTypeFactory(): void
+    {
+        /** @var Carousel|MockObject $carousel */
+        $carousel = $this->getMockBuilder(Carousel::class)
+            ->setConstructorArgs([$this->buttonFactory])
+            ->setMethodsExcept(['getTypeFactory'])
+            ->getMock();
+        $carousel
+            ->expects($this->once())
+            ->method('getElementFactory');
+
+        $typeFactory = $carousel->getTypeFactory();
+        $this->assertSame($typeFactory, $carousel->getTypeFactory());
+        $this->assertInstanceOf(VkObject\Template\Carousel\Type\Factory::class, $typeFactory);
+    }
+
+    public function testGetElementFactory(): void
+    {
+        $carousel = new Carousel($this->buttonFactory);
+        $elementFactory = $carousel->getElementFactory();
+        $this->assertInstanceOf(VkObject\Template\Carousel\Element\Factory::class, $elementFactory);
+        $this->assertSame($elementFactory, $carousel->getElementFactory());
+    }
+}
diff --git a/tests/KeyboardConverter/Factory/TemplateTest.php b/tests/KeyboardConverter/Factory/TemplateTest.php
new file mode 100644
index 0000000..8b7c137
--- /dev/null
+++ b/tests/KeyboardConverter/Factory/TemplateTest.php
@@ -0,0 +1,36 @@
+<?php
+
+namespace Test\KeyboardConverter\Factory;
+
+use PHPUnit\Framework\MockObject\MockObject;
+use VK\Tool\Messages\KeyboardConverter\Contracts\Factory\TemplateInterface;
+use PHPUnit\Framework\TestCase;
+use VK\Tool\Messages\KeyboardConverter\Contracts\Keyboard\Button\FactoryInterface;
+use VK\Tool\Messages\KeyboardConverter\Factory\Template;
+use VK\Tool\Messages\KeyboardConverter\Factory\Template\Carousel;
+
+class TemplateTest extends TestCase
+{
+    /**
+     * @var TemplateInterface
+     */
+    private $template;
+
+    /**
+     * @var FactoryInterface|MockObject
+     */
+    private $buttonFactory;
+
+    public function setUp(): void
+    {
+        $this->buttonFactory = $this->createMock(FactoryInterface::class);
+        $this->template      = new Template($this->buttonFactory);
+    }
+
+    public function testGetCarouselFactory()
+    {
+        $carouselFactory = $this->template->getCarouselFactory();
+        $this->assertSame($carouselFactory, $this->template->getCarouselFactory());
+        $this->assertInstanceOf(Carousel::class, $carouselFactory);
+    }
+}
diff --git a/tests/KeyboardConverter/FactoryTest.php b/tests/KeyboardConverter/FactoryTest.php
new file mode 100644
index 0000000..bb88a94
--- /dev/null
+++ b/tests/KeyboardConverter/FactoryTest.php
@@ -0,0 +1,33 @@
+<?php
+
+namespace Test\KeyboardConverter;
+
+use PHPUnit\Framework\TestCase;
+use VK\Tool\Messages\KeyboardConverter\Factory;
+
+class FactoryTest extends TestCase
+{
+    /**
+     * @var Factory
+     */
+    private $factory;
+
+    public function setUp(): void
+    {
+        $this->factory = new Factory();
+    }
+
+    public function testGetTemplateFactory(): void
+    {
+        $templateFactory = $this->factory->getTemplateFactory();
+        $this->assertInstanceOf(Factory\Template::class, $templateFactory);
+        $this->assertSame($templateFactory, $this->factory->getTemplateFactory());
+    }
+
+    public function testGetKeyboardFactory(): void
+    {
+        $keyboardFactory = $this->factory->getKeyboardFactory();
+        $this->assertInstanceOf(Factory\Keyboard::class, $keyboardFactory);
+        $this->assertSame($keyboardFactory, $this->factory->getKeyboardFactory());
+    }
+}
diff --git a/tests/KeyboardConverter/Object/AbstractJsonConvertibleTest.php b/tests/KeyboardConverter/Object/AbstractJsonConvertibleTest.php
new file mode 100644
index 0000000..2cbb6c4
--- /dev/null
+++ b/tests/KeyboardConverter/Object/AbstractJsonConvertibleTest.php
@@ -0,0 +1,20 @@
+<?php
+
+namespace Test\KeyboardConverter\Object;
+
+use PHPUnit\Framework\TestCase;
+
+abstract class AbstractJsonConvertibleTest extends TestCase
+{
+    protected function getExpectedJsonByFileName(string $name): string
+    {
+        return file_get_contents($this->convertFullPathToJsonByFileName($name));
+    }
+
+    abstract protected function getJsonFolderPath(): string;
+
+    private function convertFullPathToJsonByFileName(string $filename): string
+    {
+        return sprintf('%s/%s', $this->getJsonFolderPath(), $filename);
+    }
+}
\ No newline at end of file
diff --git a/tests/KeyboardConverter/Object/Keyboard/Button/AbstractButtonTest.php b/tests/KeyboardConverter/Object/Keyboard/Button/AbstractButtonTest.php
new file mode 100644
index 0000000..703f7c9
--- /dev/null
+++ b/tests/KeyboardConverter/Object/Keyboard/Button/AbstractButtonTest.php
@@ -0,0 +1,27 @@
+<?php
+
+namespace Test\KeyboardConverter\Object\Keyboard\Button;
+
+use VK\Tool\Messages\KeyboardConverter\Object\Keyboard\Button\AbstractButton;
+use Test\KeyboardConverter\Object\AbstractJsonConvertibleTest;
+
+abstract class AbstractButtonTest extends AbstractJsonConvertibleTest
+{
+    public function testConvert(): void
+    {
+        $button = $this->getButtonWithNullableFields();
+        $convertedToJsonButtonFileName = $this->getConvertedToJsonButtonFileName();
+        $this->assertSame(
+            json_decode($this->getExpectedJsonByFileName($convertedToJsonButtonFileName), true),
+            $button->convert()
+        );
+    }
+
+    protected function getJsonFolderPath(): string
+    {
+        return __DIR__.'\\converted_to_json_buttons';
+    }
+
+    abstract protected function getButtonWithNullableFields(): AbstractButton;
+    abstract protected function getConvertedToJsonButtonFileName(): string;
+}
\ No newline at end of file
diff --git a/tests/KeyboardConverter/Object/Keyboard/Button/AppTest.php b/tests/KeyboardConverter/Object/Keyboard/Button/AppTest.php
new file mode 100644
index 0000000..24ed227
--- /dev/null
+++ b/tests/KeyboardConverter/Object/Keyboard/Button/AppTest.php
@@ -0,0 +1,19 @@
+<?php
+
+namespace Test\KeyboardConverter\Object\Keyboard\Button;
+
+use VK\Tool\Messages\KeyboardConverter\Object\Keyboard\Button\AbstractButton;
+use VK\Tool\Messages\KeyboardConverter\Object\Keyboard\Button\App;
+
+class AppTest extends AbstractButtonTest
+{
+    protected function getButtonWithNullableFields(): AbstractButton
+    {
+        return new App('', 0, '', '');
+    }
+
+    protected function getConvertedToJsonButtonFileName(): string
+    {
+        return 'app.json';
+    }
+}
diff --git a/tests/KeyboardConverter/Object/Keyboard/Button/FactoryTest.php b/tests/KeyboardConverter/Object/Keyboard/Button/FactoryTest.php
new file mode 100644
index 0000000..3b8528f
--- /dev/null
+++ b/tests/KeyboardConverter/Object/Keyboard/Button/FactoryTest.php
@@ -0,0 +1,49 @@
+<?php
+
+namespace Test\KeyboardConverter\Object\Keyboard\Button;
+
+use VK\Tool\Messages\KeyboardConverter\Object\Keyboard\Button;
+use PHPUnit\Framework\TestCase;
+
+class FactoryTest extends TestCase
+{
+    /**
+     * @var Button\Factory
+     */
+    private $factory;
+
+    public function setUp(): void
+    {
+        $this->factory = new Button\Factory();
+    }
+
+    public function testApp(): void
+    {
+        $app = new Button\App('::test::',0, '::test::', '::test::');
+        $this->assertEquals($app, $this->factory->app('::test::', 0, '::test::', '::test::'));
+    }
+
+    public function testPay()
+    {
+        $pay = new Button\Pay('::test::');
+        $this->assertEquals($pay, $this->factory->pay('::test::'));
+    }
+
+    public function testLocation()
+    {
+        $location = new Button\Location([]);
+        $this->assertEquals($location, $this->factory->location([]));
+    }
+
+    public function testLink()
+    {
+        $link = new Button\Link('::test::','::test::', []);
+        $this->assertEquals($link, $this->factory->link('::test::','::test::', []));
+    }
+
+    public function testText()
+    {
+        $text = new Button\Text('::test::',[]);
+        $this->assertEquals($text, $this->factory->text('::test::',[]));
+    }
+}
diff --git a/tests/KeyboardConverter/Object/Keyboard/Button/LinkTest.php b/tests/KeyboardConverter/Object/Keyboard/Button/LinkTest.php
new file mode 100644
index 0000000..43b12ef
--- /dev/null
+++ b/tests/KeyboardConverter/Object/Keyboard/Button/LinkTest.php
@@ -0,0 +1,20 @@
+<?php
+
+namespace Test\KeyboardConverter\Object\Keyboard\Button;
+
+use VK\Tool\Messages\KeyboardConverter\Object\Keyboard\Button\AbstractButton;
+use VK\Tool\Messages\KeyboardConverter\Object\Keyboard\Button\Link;
+
+class LinkTest extends AbstractButtonTest
+{
+    protected function getButtonWithNullableFields(): AbstractButton
+    {
+        return new Link('', '');
+    }
+
+    protected function getConvertedToJsonButtonFileName(): string
+    {
+        return 'link.json';
+    }
+
+}
diff --git a/tests/KeyboardConverter/Object/Keyboard/Button/LocationTest.php b/tests/KeyboardConverter/Object/Keyboard/Button/LocationTest.php
new file mode 100644
index 0000000..a41e62d
--- /dev/null
+++ b/tests/KeyboardConverter/Object/Keyboard/Button/LocationTest.php
@@ -0,0 +1,19 @@
+<?php
+
+namespace Test\KeyboardConverter\Object\Keyboard\Button;
+
+use VK\Tool\Messages\KeyboardConverter\Object\Keyboard\Button\AbstractButton;
+use VK\Tool\Messages\KeyboardConverter\Object\Keyboard\Button\Location;
+
+class LocationTest extends AbstractButtonTest
+{
+    protected function getButtonWithNullableFields(): AbstractButton
+    {
+        return new Location([]);
+    }
+
+    protected function getConvertedToJsonButtonFileName(): string
+    {
+        return 'location.json';
+    }
+}
diff --git a/tests/KeyboardConverter/Object/Keyboard/Button/PayTest.php b/tests/KeyboardConverter/Object/Keyboard/Button/PayTest.php
new file mode 100644
index 0000000..5a708df
--- /dev/null
+++ b/tests/KeyboardConverter/Object/Keyboard/Button/PayTest.php
@@ -0,0 +1,18 @@
+<?php
+
+namespace Test\KeyboardConverter\Object\Keyboard\Button;
+
+use VK\Tool\Messages\KeyboardConverter\Object\Keyboard\Button;
+
+class PayTest extends AbstractButtonTest
+{
+    protected function getButtonWithNullableFields(): Button\AbstractButton
+    {
+        return new Button\Pay('');
+    }
+
+    protected function getConvertedToJsonButtonFileName(): string
+    {
+        return 'pay.json';
+    }
+}
diff --git a/tests/KeyboardConverter/Object/Keyboard/Button/TextTest.php b/tests/KeyboardConverter/Object/Keyboard/Button/TextTest.php
new file mode 100644
index 0000000..f0d2be2
--- /dev/null
+++ b/tests/KeyboardConverter/Object/Keyboard/Button/TextTest.php
@@ -0,0 +1,18 @@
+<?php
+
+namespace Test\KeyboardConverter\Object\Keyboard\Button;
+
+use VK\Tool\Messages\KeyboardConverter\Object\Keyboard\Button;
+
+class TextTest extends AbstractButtonTest
+{
+    protected function getButtonWithNullableFields(): Button\AbstractButton
+    {
+        return new Button\Text('', []);
+    }
+
+    protected function getConvertedToJsonButtonFileName(): string
+    {
+        return 'text.json';
+    }
+}
diff --git a/tests/KeyboardConverter/Object/Keyboard/Button/converted_to_json_buttons/app.json b/tests/KeyboardConverter/Object/Keyboard/Button/converted_to_json_buttons/app.json
new file mode 100644
index 0000000..87b0422
--- /dev/null
+++ b/tests/KeyboardConverter/Object/Keyboard/Button/converted_to_json_buttons/app.json
@@ -0,0 +1,9 @@
+{
+  "action": {
+    "app_id": 0,
+    "owner_id": "",
+    "hash": "",
+    "label": "",
+    "type": "open_app"
+  }
+}
\ No newline at end of file
diff --git a/tests/KeyboardConverter/Object/Keyboard/Button/converted_to_json_buttons/link.json b/tests/KeyboardConverter/Object/Keyboard/Button/converted_to_json_buttons/link.json
new file mode 100644
index 0000000..526030e
--- /dev/null
+++ b/tests/KeyboardConverter/Object/Keyboard/Button/converted_to_json_buttons/link.json
@@ -0,0 +1,8 @@
+{
+  "action": {
+    "link": "",
+    "label": "",
+    "payload": "[]",
+    "type": "open_link"
+  }
+}
\ No newline at end of file
diff --git a/tests/KeyboardConverter/Object/Keyboard/Button/converted_to_json_buttons/location.json b/tests/KeyboardConverter/Object/Keyboard/Button/converted_to_json_buttons/location.json
new file mode 100644
index 0000000..75b2147
--- /dev/null
+++ b/tests/KeyboardConverter/Object/Keyboard/Button/converted_to_json_buttons/location.json
@@ -0,0 +1,6 @@
+{
+  "action": {
+    "payload": "[]",
+    "type": "location"
+  }
+}
\ No newline at end of file
diff --git a/tests/KeyboardConverter/Object/Keyboard/Button/converted_to_json_buttons/pay.json b/tests/KeyboardConverter/Object/Keyboard/Button/converted_to_json_buttons/pay.json
new file mode 100644
index 0000000..0e3bd76
--- /dev/null
+++ b/tests/KeyboardConverter/Object/Keyboard/Button/converted_to_json_buttons/pay.json
@@ -0,0 +1,6 @@
+{
+  "action": {
+    "hash": "",
+    "type": "vkpay"
+  }
+}
\ No newline at end of file
diff --git a/tests/KeyboardConverter/Object/Keyboard/Button/converted_to_json_buttons/text.json b/tests/KeyboardConverter/Object/Keyboard/Button/converted_to_json_buttons/text.json
new file mode 100644
index 0000000..c792361
--- /dev/null
+++ b/tests/KeyboardConverter/Object/Keyboard/Button/converted_to_json_buttons/text.json
@@ -0,0 +1,8 @@
+{
+  "color": "positive",
+  "action": {
+    "payload": "[]",
+    "label": "",
+    "type": "text"
+  }
+}
\ No newline at end of file
diff --git a/tests/KeyboardConverter/Object/Keyboard/ConverterTest.php b/tests/KeyboardConverter/Object/Keyboard/ConverterTest.php
new file mode 100644
index 0000000..f7c567e
--- /dev/null
+++ b/tests/KeyboardConverter/Object/Keyboard/ConverterTest.php
@@ -0,0 +1,63 @@
+<?php
+
+namespace Test\KeyboardConverter\Object\Keyboard;
+
+use PHPUnit\Framework\MockObject\MockObject;
+use VK\Tool\Messages\KeyboardConverter\Object as VkObject;
+use VK\Tool\Messages\KeyboardConverter\Contracts;
+use PHPUnit\Framework\TestCase;
+
+class ConverterTest extends TestCase
+{
+    /**
+     * @var VkObject\Keyboard\Converter
+     */
+    private $converter;
+
+    /**
+     * @var Contracts\Keyboard\Type\FactoryInterface|MockObject
+     */
+    private $factory;
+
+    public function setUp(): void
+    {
+        $this->factory   = $this->createMock(Contracts\Keyboard\Type\FactoryInterface::class);
+        $this->converter = new VkObject\Keyboard\Converter($this->factory);
+    }
+
+    public function testInline()
+    {
+        $inline = $this->createMock(VkObject\Keyboard\Type\Inline::class);
+        $this->factory
+            ->expects($this->once())
+            ->method('inline')
+            ->willReturn($inline);
+        $inline
+            ->expects($this->once())
+            ->method('convert');
+
+        $this->converter->inline(function (Contracts\Keyboard\Button\FactoryInterface $factory) {
+            return [
+                [
+                    $factory->text('::test::', [])
+                ]
+            ];
+        });
+    }
+
+    public function testBasic()
+    {
+        $basic = $this->createMock(VkObject\Keyboard\Type\Basic::class);
+        $this->factory
+            ->expects($this->once())
+            ->method('basic')
+            ->willReturn($basic);
+        $basic
+            ->expects($this->once())
+            ->method('convert');
+
+        $this->converter->basic(function () {
+            return [[]];
+        });
+    }
+}
diff --git a/tests/KeyboardConverter/Object/Keyboard/Type/AbstractTypeTest.php b/tests/KeyboardConverter/Object/Keyboard/Type/AbstractTypeTest.php
new file mode 100644
index 0000000..7de0161
--- /dev/null
+++ b/tests/KeyboardConverter/Object/Keyboard/Type/AbstractTypeTest.php
@@ -0,0 +1,27 @@
+<?php
+
+namespace Test\KeyboardConverter\Object\Keyboard\Type;
+
+use VK\Tool\Messages\KeyboardConverter\Object\Keyboard\Type\AbstractType;
+use Test\KeyboardConverter\Object\AbstractJsonConvertibleTest;
+
+abstract class AbstractTypeTest extends AbstractJsonConvertibleTest
+{
+    public function testConvert(): void
+    {
+        $type = $this->getTypeWithNullableFields();
+        $convertedToJsonTypeFileName = $this->getConvertedToJsonTypeFileName();
+        $this->assertSame(
+            json_decode($this->getExpectedJsonByFileName($convertedToJsonTypeFileName), true),
+            json_decode($type->convert(), true)
+        );
+    }
+
+    protected function getJsonFolderPath(): string
+    {
+        return __DIR__ . '/converted_to_json_types';
+    }
+
+    abstract protected function getTypeWithNullableFields(): AbstractType;
+    abstract protected function getConvertedToJsonTypeFileName(): string;
+}
\ No newline at end of file
diff --git a/tests/KeyboardConverter/Object/Keyboard/Type/BasicTest.php b/tests/KeyboardConverter/Object/Keyboard/Type/BasicTest.php
new file mode 100644
index 0000000..adf7c1f
--- /dev/null
+++ b/tests/KeyboardConverter/Object/Keyboard/Type/BasicTest.php
@@ -0,0 +1,19 @@
+<?php
+
+namespace Test\KeyboardConverter\Object\Keyboard\Type;
+
+use VK\Tool\Messages\KeyboardConverter\Object\Keyboard\Type\AbstractType;
+use VK\Tool\Messages\KeyboardConverter\Object\Keyboard\Type\Basic;
+
+class BasicTest extends AbstractTypeTest
+{
+    protected function getTypeWithNullableFields(): AbstractType
+    {
+        return new Basic([]);
+    }
+
+    protected function getConvertedToJsonTypeFileName(): string
+    {
+        return 'basic.json';
+    }
+}
diff --git a/tests/KeyboardConverter/Object/Keyboard/Type/FactoryTest.php b/tests/KeyboardConverter/Object/Keyboard/Type/FactoryTest.php
new file mode 100644
index 0000000..010aa62
--- /dev/null
+++ b/tests/KeyboardConverter/Object/Keyboard/Type/FactoryTest.php
@@ -0,0 +1,53 @@
+<?php
+
+namespace Test\KeyboardConverter\Object\Keyboard\Type;
+
+use PHPUnit\Framework\MockObject\MockObject;
+use stdClass;
+use VK\Tool\Messages\KeyboardConverter\Contracts\Keyboard\Button;
+use VK\Tool\Messages\KeyboardConverter\Object\Keyboard\Type;
+use PHPUnit\Framework\TestCase;
+
+class FactoryTest extends TestCase
+{
+    /**
+     * @var Type\Factory
+     */
+    private $typeFactory;
+
+    /**
+     * @var Button\FactoryInterface
+     */
+    private $buttonFactory;
+
+    public function setUp(): void
+    {
+        $this->buttonFactory = $this->createMock(Button\FactoryInterface::class);
+        $this->typeFactory   = new Type\Factory($this->buttonFactory);
+    }
+
+
+    public function testInline()
+    {
+        $mockWithCallback = $this->getPreparedMockWithCallbackByCallbackName('testInlineCallback');
+        $this->typeFactory->inline([$mockWithCallback, 'testInlineCallback']);
+    }
+
+    public function testBasic()
+    {
+        $mockWithCallback = $this->getPreparedMockWithCallbackByCallbackName('testBasicCallback');
+        $this->typeFactory->basic([$mockWithCallback, 'testBasicCallback']);
+    }
+
+    private function getPreparedMockWithCallbackByCallbackName(string $name): MockObject
+    {
+        $mockWithCallback = $this->getMockBuilder(stdClass::class)
+            ->setMethods([$name])
+            ->getMock();
+        $mockWithCallback->expects($this->once())
+            ->method($name)
+            ->willReturn([]);
+
+        return $mockWithCallback;
+    }
+}
diff --git a/tests/KeyboardConverter/Object/Keyboard/Type/InlineTest.php b/tests/KeyboardConverter/Object/Keyboard/Type/InlineTest.php
new file mode 100644
index 0000000..9062cf8
--- /dev/null
+++ b/tests/KeyboardConverter/Object/Keyboard/Type/InlineTest.php
@@ -0,0 +1,19 @@
+<?php
+
+namespace Test\KeyboardConverter\Object\Keyboard\Type;
+
+use VK\Tool\Messages\KeyboardConverter\Object\Keyboard\Type\AbstractType;
+use VK\Tool\Messages\KeyboardConverter\Object\Keyboard\Type\Inline;
+
+class InlineTest extends AbstractTypeTest
+{
+    protected function getTypeWithNullableFields(): AbstractType
+    {
+        return new Inline([]);
+    }
+
+    protected function getConvertedToJsonTypeFileName(): string
+    {
+        return 'inline.json';
+    }
+}
diff --git a/tests/KeyboardConverter/Object/Keyboard/Type/converted_to_json_types/basic.json b/tests/KeyboardConverter/Object/Keyboard/Type/converted_to_json_types/basic.json
new file mode 100644
index 0000000..fbe661a
--- /dev/null
+++ b/tests/KeyboardConverter/Object/Keyboard/Type/converted_to_json_types/basic.json
@@ -0,0 +1,4 @@
+{
+  "one_time": true,
+  "buttons": []
+}
\ No newline at end of file
diff --git a/tests/KeyboardConverter/Object/Keyboard/Type/converted_to_json_types/inline.json b/tests/KeyboardConverter/Object/Keyboard/Type/converted_to_json_types/inline.json
new file mode 100644
index 0000000..69b1c0c
--- /dev/null
+++ b/tests/KeyboardConverter/Object/Keyboard/Type/converted_to_json_types/inline.json
@@ -0,0 +1,4 @@
+{
+  "inline": true,
+  "buttons": []
+}
\ No newline at end of file
diff --git a/tests/KeyboardConverter/Object/Template/Carousel/ConverterTest.php b/tests/KeyboardConverter/Object/Template/Carousel/ConverterTest.php
new file mode 100644
index 0000000..dd61449
--- /dev/null
+++ b/tests/KeyboardConverter/Object/Template/Carousel/ConverterTest.php
@@ -0,0 +1,43 @@
+<?php
+
+namespace Test\KeyboardConverter\Object\Template\Carousel;
+
+use PHPUnit\Framework\MockObject\MockObject;
+use VK\Tool\Messages\KeyboardConverter\Contracts;
+use VK\Tool\Messages\KeyboardConverter\Object\Template\Carousel\Converter;
+use PHPUnit\Framework\TestCase;
+use VK\Tool\Messages\KeyboardConverter\Object\Template\Carousel;
+
+class ConverterTest extends TestCase
+{
+    /**
+     * @var Contracts\Template\Carousel\Type\FactoryInterface|MockObject
+     */
+    private $factory;
+
+    /**
+     * @var Converter
+     */
+    private $converter;
+
+    public function setUp(): void
+    {
+        $this->factory  = $this->createMock(Contracts\Template\Carousel\Type\FactoryInterface::class);
+        $this->converter = new Converter($this->factory);
+    }
+
+    public function testBasic()
+    {
+        $basic = $this->createMock(Carousel\Type\Basic::class);
+        $basic->expects($this->once())
+            ->method('convert');
+
+        $this->factory->expects($this->once())
+            ->method('basic')
+            ->willReturn($basic);
+
+        $this->converter->basic(function () {
+            return [];
+        });
+    }
+}
diff --git a/tests/KeyboardConverter/Object/Template/Carousel/Element/AbstractElementTest.php b/tests/KeyboardConverter/Object/Template/Carousel/Element/AbstractElementTest.php
new file mode 100644
index 0000000..3759e39
--- /dev/null
+++ b/tests/KeyboardConverter/Object/Template/Carousel/Element/AbstractElementTest.php
@@ -0,0 +1,27 @@
+<?php
+
+namespace Test\KeyboardConverter\Object\Template\Carousel\Element;
+
+use VK\Tool\Messages\KeyboardConverter\Object\Template\Carousel\Element\AbstractElement;
+use Test\KeyboardConverter\Object\AbstractJsonConvertibleTest;
+
+abstract class AbstractElementTest extends AbstractJsonConvertibleTest
+{
+    public function testConvert(): void
+    {
+        $element = $this->getElementWithNullableFields();
+        $convertedToJsonButtonFileName = $this->getConvertedToJsonElementFileName();
+        $this->assertSame(
+            json_decode($this->getExpectedJsonByFileName($convertedToJsonButtonFileName), true),
+            $element->convert()
+        );
+    }
+
+    protected function getJsonFolderPath(): string
+    {
+        return __DIR__.'\\converted_to_json_elements';
+    }
+
+    abstract protected function getElementWithNullableFields(): AbstractElement;
+    abstract protected function getConvertedToJsonElementFileName(): string;
+}
\ No newline at end of file
diff --git a/tests/KeyboardConverter/Object/Template/Carousel/Element/OpenLinkTest.php b/tests/KeyboardConverter/Object/Template/Carousel/Element/OpenLinkTest.php
new file mode 100644
index 0000000..c6455ee
--- /dev/null
+++ b/tests/KeyboardConverter/Object/Template/Carousel/Element/OpenLinkTest.php
@@ -0,0 +1,18 @@
+<?php
+
+namespace Test\KeyboardConverter\Object\Template\Carousel\Element;
+
+use VK\Tool\Messages\KeyboardConverter\Object\Template\Carousel\Element;
+
+class OpenLinkTest extends AbstractElementTest
+{
+    protected function getElementWithNullableFields(): Element\AbstractElement
+    {
+        return new Element\OpenLink('', [], '', '', '');
+    }
+
+    protected function getConvertedToJsonElementFileName(): string
+    {
+        return 'open_link.json';
+    }
+}
diff --git a/tests/KeyboardConverter/Object/Template/Carousel/Element/OpenPhotoTest.php b/tests/KeyboardConverter/Object/Template/Carousel/Element/OpenPhotoTest.php
new file mode 100644
index 0000000..d9b14d2
--- /dev/null
+++ b/tests/KeyboardConverter/Object/Template/Carousel/Element/OpenPhotoTest.php
@@ -0,0 +1,19 @@
+<?php
+
+namespace Test\KeyboardConverter\Object\Template\Carousel\Element;
+
+use VK\Tool\Messages\KeyboardConverter\Object\Template\Carousel\Element;
+
+class OpenPhotoTest extends AbstractElementTest
+{
+    protected function getElementWithNullableFields(): Element\AbstractElement
+    {
+        return new Element\OpenPhoto([], '', '', '');
+    }
+
+    protected function getConvertedToJsonElementFileName(): string
+    {
+        return 'open_photo.json';
+    }
+
+}
\ No newline at end of file
diff --git a/tests/KeyboardConverter/Object/Template/Carousel/Element/converted_to_json_elements/open_link.json b/tests/KeyboardConverter/Object/Template/Carousel/Element/converted_to_json_elements/open_link.json
new file mode 100644
index 0000000..9f66e2e
--- /dev/null
+++ b/tests/KeyboardConverter/Object/Template/Carousel/Element/converted_to_json_elements/open_link.json
@@ -0,0 +1,10 @@
+{
+  "buttons": [],
+  "title": "",
+  "description": "",
+  "photo_id": "",
+  "action": {
+    "link": "",
+    "type": "open_link"
+  }
+}
\ No newline at end of file
diff --git a/tests/KeyboardConverter/Object/Template/Carousel/Element/converted_to_json_elements/open_photo.json b/tests/KeyboardConverter/Object/Template/Carousel/Element/converted_to_json_elements/open_photo.json
new file mode 100644
index 0000000..a63b52b
--- /dev/null
+++ b/tests/KeyboardConverter/Object/Template/Carousel/Element/converted_to_json_elements/open_photo.json
@@ -0,0 +1,9 @@
+{
+  "buttons": [],
+  "title": "",
+  "description": "",
+  "photo_id": "",
+  "action": {
+    "type": "open_photo"
+  }
+}
\ No newline at end of file
diff --git a/tests/KeyboardConverter/Object/Template/Carousel/Type/AbstractTypeTest.php b/tests/KeyboardConverter/Object/Template/Carousel/Type/AbstractTypeTest.php
new file mode 100644
index 0000000..d15dba3
--- /dev/null
+++ b/tests/KeyboardConverter/Object/Template/Carousel/Type/AbstractTypeTest.php
@@ -0,0 +1,27 @@
+<?php
+
+namespace Test\KeyboardConverter\Object\Template\Carousel\Type;
+
+use VK\Tool\Messages\KeyboardConverter\Object\Template\Carousel\Type\AbstractType;
+use Test\KeyboardConverter\Object\AbstractJsonConvertibleTest;
+
+abstract class AbstractTypeTest extends AbstractJsonConvertibleTest
+{
+    public function testConvert(): void
+    {
+        $type = $this->getTypeWithNullableFields();
+        $convertedToJsonTypeFileName = $this->getConvertedToJsonTypeFileName();
+        $this->assertSame(
+            json_decode($this->getExpectedJsonByFileName($convertedToJsonTypeFileName), true),
+            json_decode($type->convert(), true)
+        );
+    }
+
+    protected function getJsonFolderPath(): string
+    {
+        return __DIR__ . '/converted_to_json_types';
+    }
+
+    abstract protected function getTypeWithNullableFields(): AbstractType;
+    abstract protected function getConvertedToJsonTypeFileName(): string;
+}
\ No newline at end of file
diff --git a/tests/KeyboardConverter/Object/Template/Carousel/Type/BasicTest.php b/tests/KeyboardConverter/Object/Template/Carousel/Type/BasicTest.php
new file mode 100644
index 0000000..3a5c961
--- /dev/null
+++ b/tests/KeyboardConverter/Object/Template/Carousel/Type/BasicTest.php
@@ -0,0 +1,20 @@
+<?php
+
+namespace Test\KeyboardConverter\Object\Template\Carousel\Type;
+
+use VK\Tool\Messages\KeyboardConverter\Object\Template\Carousel\Type\AbstractType;
+use VK\Tool\Messages\KeyboardConverter\Object\Template\Carousel\Type\Basic;
+
+class BasicTest extends AbstractTypeTest
+{
+    protected function getTypeWithNullableFields(): AbstractType
+    {
+        return new Basic([]);
+    }
+
+    protected function getConvertedToJsonTypeFileName(): string
+    {
+        return 'basic.json';
+    }
+
+}
diff --git a/tests/KeyboardConverter/Object/Template/Carousel/Type/FactoryTest.php b/tests/KeyboardConverter/Object/Template/Carousel/Type/FactoryTest.php
new file mode 100644
index 0000000..6ba4f30
--- /dev/null
+++ b/tests/KeyboardConverter/Object/Template/Carousel/Type/FactoryTest.php
@@ -0,0 +1,42 @@
+<?php
+
+namespace Test\KeyboardConverter\Object\Template\Carousel\Type;
+
+use PHPUnit\Framework\MockObject\MockObject;
+use stdClass;
+use VK\Tool\Messages\KeyboardConverter\Object as VkObject;
+use PHPUnit\Framework\TestCase;
+
+class FactoryTest extends TestCase
+{
+    /**
+     * @var VkObject\Template\Carousel\Type\Factory|MockObject
+     */
+    private $typeFactory;
+
+    public function setUp(): void
+    {
+        $this->typeFactory = new VkObject\Template\Carousel\Type\Factory(
+            new VkObject\Template\Carousel\Element\Factory(),
+            new VkObject\Keyboard\Button\Factory()
+        );
+    }
+
+    public function testBasic(): void
+    {
+        $mockWithCallback = $this->getPreparedMockWithCallbackByCallbackName('testBasicCallback');
+        $this->typeFactory->basic([$mockWithCallback, 'testBasicCallback']);
+    }
+
+    private function getPreparedMockWithCallbackByCallbackName(string $name): MockObject
+    {
+        $mockWithCallback = $this->getMockBuilder(stdClass::class)
+            ->setMethods([$name])
+            ->getMock();
+        $mockWithCallback->expects($this->once())
+            ->method($name)
+            ->willReturn([]);
+
+        return $mockWithCallback;
+    }
+}
diff --git a/tests/KeyboardConverter/Object/Template/Carousel/Type/converted_to_json_types/basic.json b/tests/KeyboardConverter/Object/Template/Carousel/Type/converted_to_json_types/basic.json
new file mode 100644
index 0000000..6c0e561
--- /dev/null
+++ b/tests/KeyboardConverter/Object/Template/Carousel/Type/converted_to_json_types/basic.json
@@ -0,0 +1,4 @@
+{
+  "elements": [],
+  "type": "carousel"
+}
\ No newline at end of file
diff --git a/tests/KeyboardConverter/Object/Template/ConverterTest.php b/tests/KeyboardConverter/Object/Template/ConverterTest.php
new file mode 100644
index 0000000..7ff0f02
--- /dev/null
+++ b/tests/KeyboardConverter/Object/Template/ConverterTest.php
@@ -0,0 +1,29 @@
+<?php
+
+namespace Test\KeyboardConverter\Object\Template;
+
+use VK\Tool\Messages\KeyboardConverter\Object\Template\Converter;
+use PHPUnit\Framework\TestCase;
+use VK\Tool\Messages\KeyboardConverter\Object\Template\Carousel;
+use VK\Tool\Messages\KeyboardConverter\Object\Keyboard;
+
+class ConverterTest extends TestCase
+{
+    /**
+     * @var Converter
+     */
+    private $converter;
+
+    public function setUp(): void
+    {
+        $this->converter = new Converter();
+    }
+
+    public function testCarousel()
+    {
+        $elementFactory = new Carousel\Element\Factory();
+        $buttonFactory  = new Keyboard\Button\Factory();
+        $typeFactory = new Carousel\Type\Factory($elementFactory, $buttonFactory);
+        $this->assertEquals(new Carousel\Converter($typeFactory), $this->converter->carousel($typeFactory));
+    }
+}