diff --git a/.gitignore b/.gitignore
index d3987a5..a48827e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -28,3 +28,6 @@ build/phplint.cache
 /test-requirements.txt
 /.env
 /.idea/
+/__tests__/_generated/
+/__tests__/_output/
+/__tests__/Support/
diff --git a/__tests__/Acceptance.suite.yml b/__tests__/Acceptance.suite.yml
deleted file mode 100644
index 5b10b9d..0000000
--- a/__tests__/Acceptance.suite.yml
+++ /dev/null
@@ -1,16 +0,0 @@
-# Codeception Test Suite Configuration
-#
-# Suite for acceptance tests.
-# Perform tests in browser using the WebDriver or PhpBrowser.
-# If you need both WebDriver and PHPBrowser tests - create a separate suite.
-
-actor: AcceptanceTester
-modules:
-    enabled:
-        - PhpBrowser:
-            url: http://localhost/myapp
-# add Codeception\Step\Retry trait to AcceptanceTester to enable retries
-step_decorators:
-    - Codeception\Step\ConditionalAssertion
-    - Codeception\Step\TryTo
-    - Codeception\Step\Retry
diff --git a/__tests__/Functional.suite.yml b/__tests__/Functional.suite.yml
deleted file mode 100644
index 1b7276a..0000000
--- a/__tests__/Functional.suite.yml
+++ /dev/null
@@ -1,12 +0,0 @@
-# Codeception Test Suite Configuration
-#
-# Suite for functional tests
-# Emulate web requests and make application process them
-# Include one of framework modules (Symfony, Yii2, Laravel, Phalcon5) to use it
-# Remove this suite if you don't use frameworks
-
-actor: FunctionalTester
-modules:
-    enabled:
-        # add a framework module here
-step_decorators: ~
diff --git a/__tests__/README_TESTS.md b/__tests__/README_TESTS.md
new file mode 100644
index 0000000..9588f48
--- /dev/null
+++ b/__tests__/README_TESTS.md
@@ -0,0 +1,54 @@
+## Tool:
+We use `codeception` for testing. You shall have installed `codeception` via `composer` in order to run the tests.
+
+
+## How to write tests:
+All tests shall be in `__tests__/Unit/` folder. And shall be named as `*Test.php`. All test functions shall be named as `test*` (see example).
+
+Import sdk:
+
+```php
+require_once(dirname(dirname(__DIR__)) . '/vendor/autoload.php');
+```
+
+Good practice is to use `_before` to configure sdks APIs:
+```php
+
+    //example
+    protected function _before()
+    {
+        //load .env
+        $env = parse_ini_file('.env');
+
+        $config = OpenAPI\Client\Configuration::getDefaultConfiguration()->setApiKey('X-App-Id', $env["X_APP_ID"]);
+        $config = OpenAPI\Client\Configuration::getDefaultConfiguration()->setApiKey('X-App-Token', $env["X_APP_TOKEN"]);
+        $config = OpenAPI\Client\Configuration::getDefaultConfiguration()->setHost($env["VOUCHERIFY_HOST"]);
+
+        $this->productsApiInstance = new OpenAPI\Client\Api\ProductsApi(
+            new GuzzleHttp\Client(),
+            $config
+        );
+        $this->campaignsApiInstance = new OpenAPI\Client\Api\CampaignsApi(
+            new GuzzleHttp\Client(),
+            $config
+        );
+        $this->redemptionsApiInstance = new OpenAPI\Client\Api\RedemptionsApi(
+            new GuzzleHttp\Client(),
+            $config
+        );
+    }
+
+```
+
+Test example:
+```php
+    //example
+    public function testListRedemptions()
+    {
+        $this->redemptionsApiInstance->listRedemptions(1, 1);
+    }
+```
+
+
+## Environment variables:
+`.env` file shall be in the root of the project and shall contain `X_APP_ID`, `X_APP_TOKEN` and `VOUCHERIFY_HOST` variables. Check `.env.example` for reference.
diff --git a/__tests__/Support/AcceptanceTester.php b/__tests__/Support/AcceptanceTester.php
deleted file mode 100644
index 6ccbabd..0000000
--- a/__tests__/Support/AcceptanceTester.php
+++ /dev/null
@@ -1,29 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Tests\Support;
-
-/**
- * Inherited Methods
- * @method void wantTo($text)
- * @method void wantToTest($text)
- * @method void execute($callable)
- * @method void expectTo($prediction)
- * @method void expect($prediction)
- * @method void amGoingTo($argumentation)
- * @method void am($role)
- * @method void lookForwardTo($achieveValue)
- * @method void comment($description)
- * @method void pause($vars = [])
- *
- * @SuppressWarnings(PHPMD)
-*/
-class AcceptanceTester extends \Codeception\Actor
-{
-    use _generated\AcceptanceTesterActions;
-
-    /**
-     * Define custom actions here
-     */
-}
diff --git a/__tests__/Support/Data/.gitkeep b/__tests__/Support/Data/.gitkeep
deleted file mode 100644
index e69de29..0000000
diff --git a/__tests__/Support/FunctionalTester.php b/__tests__/Support/FunctionalTester.php
deleted file mode 100644
index 71fb8e4..0000000
--- a/__tests__/Support/FunctionalTester.php
+++ /dev/null
@@ -1,29 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Tests\Support;
-
-/**
- * Inherited Methods
- * @method void wantTo($text)
- * @method void wantToTest($text)
- * @method void execute($callable)
- * @method void expectTo($prediction)
- * @method void expect($prediction)
- * @method void amGoingTo($argumentation)
- * @method void am($role)
- * @method void lookForwardTo($achieveValue)
- * @method void comment($description)
- * @method void pause($vars = [])
- *
- * @SuppressWarnings(PHPMD)
-*/
-class FunctionalTester extends \Codeception\Actor
-{
-    use _generated\FunctionalTesterActions;
-
-    /**
-     * Define custom actions here
-     */
-}
diff --git a/__tests__/Support/_generated/.gitignore b/__tests__/Support/_generated/.gitignore
deleted file mode 100644
index d6b7ef3..0000000
--- a/__tests__/Support/_generated/.gitignore
+++ /dev/null
@@ -1,2 +0,0 @@
-*
-!.gitignore
diff --git a/__tests__/Support/UnitTester.php b/__tests__/UnitTester.php
similarity index 100%
rename from __tests__/Support/UnitTester.php
rename to __tests__/UnitTester.php
diff --git a/__tests__/_output/.gitignore b/__tests__/_output/.gitignore
deleted file mode 100644
index d6b7ef3..0000000
--- a/__tests__/_output/.gitignore
+++ /dev/null
@@ -1,2 +0,0 @@
-*
-!.gitignore
diff --git a/codeception.yml b/codeception.yml
index 1aa6253..fe4bb7b 100644
--- a/codeception.yml
+++ b/codeception.yml
@@ -3,8 +3,8 @@ support_namespace: Support
 paths:
     tests: __tests__
     output: __tests__/_output
-    data: __tests__/Support/Data
-    support: __tests__/Support
+    data: __tests__/SupportData
+    support: __tests__
     envs: .env
 actor_suffix: Tester
 extensions:
diff --git a/composer.json b/composer.json
index 77d14ce..3d3529d 100644
--- a/composer.json
+++ b/composer.json
@@ -27,7 +27,6 @@
     },
     "require-dev": {
         "codeception/codeception": "^5.0",
-        "codeception/module-phpbrowser": "*",
         "codeception/module-asserts": "*"
     },
     "autoload": {
@@ -46,4 +45,4 @@
         ],
         "phplint": "phplint"
     }
-}
\ No newline at end of file
+}