1 files changed, 40 insertions, 0 deletions
diff --git a/test/python/module.py b/test/python/module.py
new file mode 100755
index 0000000..88682c6
--- /dev/null
+++ b/test/python/module.py
@@ -0,0 +1,40 @@
+#!/usr/bin/env python3
+
+import unittest
+import ixion
+
+
+class ModuleTest(unittest.TestCase):
+
+    def test_column_label(self):
+        # Get a single label.
+        labels = ixion.column_label(0, 1)
+        self.assertEqual(1, len(labels))
+        self.assertEqual('A', labels[0])
+
+        # Get multiple labels.
+        labels = ixion.column_label(2, 10)
+        self.assertEqual(8, len(labels))
+        self.assertEqual(labels, ('C','D','E','F','G','H','I','J'))
+
+        # The following start, stop combos should individually raise IndexError.
+        tests = (
+            (2, 2),
+            (2, 0),
+            (-1, 10)
+        )
+        for test in tests:
+            with self.assertRaises(IndexError):
+                labels = ixion.column_label(test[0], test[1])
+
+        # Keyword arguments should work.
+        labels = ixion.column_label(start=2, stop=4)
+        self.assertEqual(labels, ('C','D'))
+
+        # Get labels in R1C1.
+        labels = ixion.column_label(5, 10, 2)
+        self.assertEqual(labels, ('6','7','8','9','10'))
+
+
+if __name__ == '__main__':
+    unittest.main()