diff --git a/tests/test_dispatcher/test_filters/test_builtin.py b/tests/test_dispatcher/test_filters/test_builtin.py
new file mode 100644
index 00000000..86344cec
--- /dev/null
+++ b/tests/test_dispatcher/test_filters/test_builtin.py
@@ -0,0 +1,18 @@
+import pytest
+
+from aiogram.dispatcher.filters.builtin import Text
+
+
+class TestText:
+
+    @pytest.mark.parametrize('param, key', [
+        ('text', 'equals'),
+        ('text_contains', 'contains'),
+        ('text_startswith', 'startswith'),
+        ('text_endswith', 'endswith'),
+    ])
+    def test_validate(self, param, key):
+        value = 'spam and eggs'
+        config = {param: value}
+        res = Text.validate(config)
+        assert res == {key: value}
diff --git a/tests/test_dispatcher/test_filters/test_state.py b/tests/test_dispatcher/test_filters/test_state.py
new file mode 100644
index 00000000..b7f5a5fd
--- /dev/null
+++ b/tests/test_dispatcher/test_filters/test_state.py
@@ -0,0 +1,18 @@
+from aiogram.dispatcher.filters.state import StatesGroup
+
+class TestStatesGroup:
+
+    def test_all_childs(self):
+
+        class InnerState1(StatesGroup):
+            pass
+
+        class InnerState2(InnerState1):
+            pass
+
+        class Form(StatesGroup):
+            inner1 = InnerState1
+            inner2 = InnerState2
+
+        form_childs = Form.all_childs
+        assert form_childs == (InnerState1, InnerState2)