diff --git a/tests/conversion_tests/test_boundary.py b/tests/conversion_tests/test_boundary.py
new file mode 100644
index 0000000..58c7858
--- /dev/null
+++ b/tests/conversion_tests/test_boundary.py
@@ -0,0 +1,9 @@
+import pytest
+
+@pytest.mark.parametrize('input_data, expected', [
+    ('boundary_case_1', 'expected_result_1'),
+    ('boundary_case_2', 'expected_result_2')
+])
+def test_boundary_conversion(input_data, expected):
+    result = convert(input_data)
+    assert result == expected