diff --git a/tests/python/tests/tl_primitives/__init__.py b/tests/python/tests/tl_primitives/__init__.py
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/tests/python/tests/tl_primitives/php/data/component-config.yaml b/tests/python/tests/tl_primitives/php/data/component-config.yaml
new file mode 100644
index 0000000000..5ec7d22c4e
--- /dev/null
+++ b/tests/python/tests/tl_primitives/php/data/component-config.yaml
@@ -0,0 +1,7 @@
+entry: script
+components:
+  script:
+    image: KPHP
+    scope: Request
+    args: {}
+    links: {}
diff --git a/tests/python/tests/tl_primitives/php/index.php b/tests/python/tests/tl_primitives/php/index.php
new file mode 100644
index 0000000000..310e851a61
--- /dev/null
+++ b/tests/python/tests/tl_primitives/php/index.php
@@ -0,0 +1,54 @@
+<?php
+
+$operations = json_decode(file_get_contents('php://input'));
+
+foreach ($operations as $op) {
+  try {
+    switch ($op['kind']) {
+      case 'rpc_parse':
+        $res = rpc_parse($op['new_rpc_data']);
+        if ($res != $op['expected']) {
+          critical_error('expected ' . $op['expected'] . ' but ' . $res . '  found');
+        }
+        break;
+      case 'rpc_clean':
+        $res = rpc_clean();
+        if ($res != $op['expected']) {
+          critical_error('expected ' . $op['expected'] . ' but ' . $res . '  found');
+        }
+        break;
+      case 'fetch_int':
+        $res = fetch_int();
+        if ($res != $op['expected']) {
+          critical_error('expected ' . $op['expected'] . ' but ' . $res . '  found');
+        }
+        break;
+      case 'fetch_long':
+        $res = fetch_long();
+        if ($res != $op['expected']) {
+          critical_error('expected ' . $op['expected'] . ' but ' . $res . '  found');
+        }
+        break;
+      case 'fetch_double':
+        $res = fetch_double();
+        if ($res != $op['expected']) {
+          critical_error('expected ' . $op['expected'] . ' but ' . $res . '  found');
+        }
+        break;
+      case 'fetch_string':
+        $res = fetch_string();
+        if ($res != $op['expected']) {
+          critical_error('expected ' . $op['expected'] . ' but ' . $res . '  found');
+        }
+        break;
+      default:
+        critical_error('unknown op ' . $op['kind']);
+    }
+  } catch (Exception $e) {
+    if (!$op['expected_exception']) {
+      throw $e;
+    }
+  }
+}
+
+echo 'ok';
diff --git a/tests/python/tests/tl_primitives/test_tl_primitives.py b/tests/python/tests/tl_primitives/test_tl_primitives.py
new file mode 100644
index 0000000000..c5de676e51
--- /dev/null
+++ b/tests/python/tests/tl_primitives/test_tl_primitives.py
@@ -0,0 +1,76 @@
+import typing
+
+import pytest
+
+from python.lib.testcase import WebServerAutoTestCase
+
+
+def _operation(
+        kind: str, kwargs: typing.Dict[str, typing.Any], expected_result: typing.Any, expected_exception: bool = False
+):
+    return {
+        "kind": kind,
+        **kwargs,
+        "expected": expected_result,
+        "expected_exception": expected_exception,
+    }
+
+
+def _assert_rpc_parse(new_rpc_data: str, expected_result: bool, expected_exception: bool = False):
+    return _operation(
+        'rpc_parse', dict(new_rpc_data=new_rpc_data), expected_result, expected_exception=expected_exception
+    )
+
+
+def _assert_rpc_clean(expected_result: bool):
+    return _operation('rpc_clean', dict(), expected_result)
+
+
+def _assert_fetch_int(expected_result: int, expected_exception: bool = False):
+    return _operation('fetch_int', dict(), expected_result, expected_exception=expected_exception)
+
+
+def _assert_fetch_long(expected_result: int, expected_exception: bool = False):
+    return _operation('fetch_long', dict(), expected_result, expected_exception=expected_exception)
+
+
+def _assert_fetch_double(expected_result: float, expected_exception: bool = False):
+    return _operation('fetch_double', dict(), expected_result, expected_exception=expected_exception)
+
+
+def _assert_fetch_string(expected_result: str, expected_exception: bool = False):
+    return _operation('fetch_string', dict(), expected_result, expected_exception=expected_exception)
+
+
+class TestTlPrimitives(WebServerAutoTestCase):
+    def call(self, *operations):
+        response = self.web_server.http_post(json=operations)
+        self.assertEqual(response.status_code, 200)
+        self.assertEqual(response.text, "ok")
+
+    def test_fetch(self):
+        self.call(
+            _assert_rpc_parse(
+                '\x12\x34\x56\x78\x42\x00\x00\x00\x00\x00\x00\x00\x68\x56\x5b\x56\x06\x22\x09\x40\x03abc', True
+            ),
+            _assert_fetch_int(0x78563412),
+            _assert_fetch_long(0x42),
+            _assert_fetch_double(3.14161365),
+            _assert_fetch_string('abc'),
+        )
+
+    @pytest.mark.kphp_skip
+    def test_rpc_clean_k2(self):
+        self.call(
+            _assert_rpc_parse('\x12\x34\x56\x78', True),
+            _assert_rpc_clean(True),
+            _assert_fetch_int(0x777, expected_exception=True),
+        )
+
+    @pytest.mark.k2_skip
+    def test_rpc_clean_kphp(self):
+        self.call(
+            _assert_rpc_parse('\x12\x34\x56\x78', True),
+            _assert_rpc_clean(True),
+            _assert_fetch_int(0x78563412, expected_exception=False),
+        )