From be8bce7461439d8df8ea88f215dc35293881e107 Mon Sep 17 00:00:00 2001
From: Todd Leonhardt <todd.leonhardt@gmail.com>
Date: Wed, 5 Jul 2017 13:06:07 -0400
Subject: [PATCH] Added unit test

---
 tests/test_cmd2.py | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/tests/test_cmd2.py b/tests/test_cmd2.py
index e66c7b016..b75113dfc 100644
--- a/tests/test_cmd2.py
+++ b/tests/test_cmd2.py
@@ -1231,3 +1231,12 @@ def test_exclude_from_history(abbrev_app):
 help""")
     assert out == expected
 
+
+def test_is_text_file_bad_input(base_app):
+    # Test with a non-existent file
+    file_is_valid = base_app.is_text_file('does_not_exist.txt')
+    assert not file_is_valid
+
+    # Test with a directory
+    dir_is_valid = base_app.is_text_file('.')
+    assert not dir_is_valid