From ce8e01ed49fba035cb7857005c27aa822f962f0a Mon Sep 17 00:00:00 2001
From: Funan Zhou <matrix@blocksec.com>
Date: Tue, 31 Mar 2026 03:12:00 +0800
Subject: [PATCH] Add edge case test for whitespace-only input

This test verifies that slugify correctly returns an empty string
when the input contains only whitespace (spaces, tabs, newlines).

Test cases include:
- Spaces only
- Tabs and newlines
- Mixed whitespace characters
- Empty string

No breaking changes introduced.
---
 test.py | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/test.py b/test.py
index fcec4b6..47493f3 100644
--- a/test.py
+++ b/test.py
@@ -12,6 +12,24 @@
 
 class TestSlugify(unittest.TestCase):
 
+    def test_whitespace_only_input(self):
+        """Test that whitespace-only input returns an empty string."""
+        txt = "   "
+        r = slugify(txt)
+        self.assertEqual(r, "")
+
+        txt = "\t\n"
+        r = slugify(txt)
+        self.assertEqual(r, "")
+
+        txt = "  \n  \t  "
+        r = slugify(txt)
+        self.assertEqual(r, "")
+
+        txt = ""
+        r = slugify(txt)
+        self.assertEqual(r, "")
+
     def test_extraneous_seperators(self):
 
         txt = "This is a test ---"