diff --git a/tests/test_flat_types_deflator.py b/tests/test_flat_types_deflator.py
new file mode 100644
index 0000000..81b9ea2
--- /dev/null
+++ b/tests/test_flat_types_deflator.py
@@ -0,0 +1,53 @@
+from __future__ import annotations
+from dataclasses import dataclass
+from typing import Optional
+
+import pytest
+
+from megasniff.deflator import SchemaDeflatorGenerator
+from src.megasniff import SchemaInflatorGenerator
+
+
+def test_str_deflator():
+    defl = SchemaDeflatorGenerator()
+    fn = defl.schema_to_deflator(str, explicit_casts_override=True)
+    a = fn('asdf')
+
+    assert a == 'asdf'
+    a = fn(1234)
+
+    assert a == '1234'
+
+    fn1 = defl.schema_to_deflator(str, strict_mode_override=True)
+    with pytest.raises(Exception):
+        fn1(1234)
+
+
+def test_int_deflator():
+    defl = SchemaDeflatorGenerator()
+    fn = defl.schema_to_deflator(int, explicit_casts_override=True)
+    a = fn(1234)
+
+    assert a == 1234
+    a = fn('1234')
+
+    assert a == 1234
+
+    fn1 = defl.schema_to_deflator(int, strict_mode_override=True)
+    with pytest.raises(Exception):
+        fn1('1234')
+
+
+def test_float_deflator():
+    defl = SchemaDeflatorGenerator()
+    fn = defl.schema_to_deflator(float, explicit_casts_override=True)
+    a = fn(1234.1)
+
+    assert a == 1234.1
+    a = fn('1234')
+
+    assert a == 1234.0
+
+    fn1 = defl.schema_to_deflator(float, strict_mode_override=True)
+    with pytest.raises(Exception):
+        fn1(1234)