Added tests for new function.

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	new file:   tests/test_browse_freely.py

Author: R-Larocque

tests/test_browse_freely.py

@@ -0,0 +1,85 @@
+import unittest
+from unittest.mock import patch, MagicMock
+import os
+from lufus.browse_freely import open_url_non_root
+
+class TestBrowseFreely(unittest.TestCase):
+    def setUp(self):
+        self.url = "https://github.com/Hogjects/Lufus"
+
+    @patch("os.geteuid")
+    @patch("webbrowser.open")
+    def test_open_url_non_root_as_regular_user(self, mock_webbrowser, mock_geteuid):
+        # Simulate regular user (UID 1000)
+        mock_geteuid.return_value = 1000
+        
+        open_url_non_root(self.url)
+        
+        # Should fallback to standard webbrowser.open
+        mock_webbrowser.assert_called_once_with(self.url)
+
+    @patch("os.geteuid")
+    @patch("os.environ.get")
+    @patch("subprocess.Popen")
+    @patch("pwd.getpwuid")
+    def test_open_url_as_root_via_pkexec(self, mock_getpwuid, mock_popen, mock_env_get, mock_geteuid):
+        # Simulate root (UID 0)
+        mock_geteuid.return_value = 0
+        
+        # Mock environment variables
+        def side_effect(key, default=None):
+            env = {
+                "PKEXEC_UID": "1000",
+                "DISPLAY": ":0",
+                "XDG_RUNTIME_DIR": "/run/user/1000"
+            }
+            return env.get(key, default)
+        mock_env_get.side_effect = side_effect
+        
+        # Mock pwd info
+        mock_user = MagicMock()
+        mock_user.pw_name = "raphael"
+        mock_getpwuid.return_value = mock_user
+        
+        open_url_non_root(self.url)
+        
+        # Verify subprocess.Popen was called with runuser
+        args, kwargs = mock_popen.call_args
+        cmd = args[0]
+        self.assertEqual(cmd[0], "runuser")
+        self.assertEqual(cmd[2], "raphael")
+        self.assertIn("xdg-open", cmd)
+        self.assertIn(self.url, cmd)
+        
+        # Verify env passing
+        env = kwargs.get("env", {})
+        self.assertEqual(env.get("DISPLAY"), ":0")
+        self.assertEqual(env.get("XDG_RUNTIME_DIR"), "/run/user/1000")
+
+    @patch("os.geteuid")
+    @patch("os.environ.get")
+    @patch("subprocess.Popen")
+    def test_open_url_as_root_via_sudo(self, mock_popen, mock_env_get, mock_geteuid):
+        # Simulate root (UID 0)
+        mock_geteuid.return_value = 0
+        
+        # Mock environment variables (no PKEXEC_UID, but SUDO_USER)
+        def side_effect(key, default=None):
+            env = {
+                "SUDO_USER": "raphael",
+                "DISPLAY": ":0"
+            }
+            return env.get(key, default)
+        mock_env_get.side_effect = side_effect
+        
+        open_url_non_root(self.url)
+        
+        # Verify subprocess.Popen was called with runuser
+        args, _ = mock_popen.call_args
+        cmd = args[0]
+        self.assertEqual(cmd[0], "runuser")
+        self.assertEqual(cmd[2], "raphael")
+        self.assertIn(self.url, cmd)
+
+if __name__ == "__main__":
+    unittest.main()