diff --git a/test/test_utils.py b/test/test_utils.py
new file mode 100644
index 0000000..4a7175f
--- /dev/null
+++ b/test/test_utils.py
@@ -0,0 +1,23 @@
+from mock import *
+from atrcopy import utils
+
+
+class TestTextToInt(object):
+    def setup(self):
+        pass
+
+    @pytest.mark.parametrize("text,expected,default_base", [
+        ("12", 0x12, "hex"),
+        ("$1234", 0x1234, "hex"),
+        ("0xffff", 0xffff, "hex"),
+        ("#12", 12, "hex"),
+        ("%11001010", 202, "hex"),
+
+        ("12", 12, "dec"),
+        ("$1234", 0x1234, "dec"),
+        ("0xffff", 0xffff, "dec"),
+        ("#12", 12, "dec"),
+        ("%11001010", 202, "dec"),
+        ])
+    def test_text_to_int(self, text, expected, default_base):
+        assert expected == utils.text_to_int(text, default_base)