Fixed issue where file extenions not found and auth timeout

tests/test_extension_case_normalization.py

@@ -0,0 +1,73 @@
+#!/usr/bin/env python3
+"""
+Test extension case normalization functionality
+"""
+
+import pytest
+from unittest.mock import MagicMock
+from bdfr.resource import Resource
+
+
+class TestExtensionNormalization:
+    """Test that extensions are properly normalized to lowercase"""
+
+    def test_url_extensions_normalized(self):
+        """Test that extensions from URLs are normalized to lowercase"""
+        test_cases = [
+            ("https://example.com/image.JPG", ".jpg"),
+            ("https://example.com/image.jpeg", ".jpeg"),
+            ("https://example.com/image.JPEG", ".jpeg"),
+            ("https://example.com/image.jpg", ".jpg"),
+            ("https://example.com/image.PNG", ".png"),
+            ("https://example.com/image.GIF", ".gif"),
+        ]
+
+        for url, expected in test_cases:
+            mock_submission = MagicMock()
+            mock_submission.id = "test123"
+
+            resource = Resource(mock_submission, url, lambda: None)
+            assert resource.extension == expected, f"URL {url} should normalize to {expected}, got {resource.extension}"
+
+    def test_reddit_media_urls_normalized(self):
+        """Test that Reddit media URLs are properly normalized"""
+        test_cases = [
+            ("https://www.reddit.com/media?url=https%3A%2F%2Fi.redd.it%2Fr2mv10i4vkfd1.JPG", ".jpg"),
+            ("https://www.reddit.com/media?url=https%3A%2F%2Fi.redd.it%2Fr2mv10i4vkfd1.jpeg", ".jpeg"),
+            ("https://www.reddit.com/media?url=https%3A%2F%2Fi.redd.it%2Fr2mv10i4vkfd1.JPEG", ".jpeg"),
+            ("https://www.reddit.com/media?url=https%3A%2F%2Fi.redd.it%2Fr2mv10i4vkfd1.PNG", ".png"),
+        ]
+
+        for url, expected in test_cases:
+            mock_submission = MagicMock()
+            mock_submission.id = "test123"
+
+            resource = Resource(mock_submission, url, lambda: None)
+            assert resource.extension == expected, f"Reddit media URL {url} should normalize to {expected}, got {resource.extension}"
+
+    def test_constructor_extensions_normalized(self):
+        """Test that extensions passed to constructor are normalized"""
+        test_cases = [
+            (".JPG", ".jpg"),
+            (".JPEG", ".jpeg"),
+            (".PNG", ".png"),
+            (".GIF", ".gif"),
+        ]
+
+        for input_ext, expected in test_cases:
+            mock_submission = MagicMock()
+            mock_submission.id = "test123"
+
+            resource = Resource(mock_submission, "https://example.com/test", lambda: None, input_ext)
+            assert resource.extension == expected, f"Constructor extension {input_ext} should normalize to {expected}, got {resource.extension}"
+
+    def test_magic_number_detection_normalized(self):
+        """Test that magic number detection returns normalized extensions"""
+        mock_submission = MagicMock()
+        mock_submission.id = "test123"
+
+        # Test JPEG magic number detection
+        jpeg_content = b'\xFF\xD8\xFF' + b'0' * 100  # JPEG magic number
+        resource = Resource(mock_submission, "https://example.com/no-extension", lambda params: jpeg_content)
+        resource.download()  # Trigger content-based detection
+        assert resource.extension == ".jpg", f"Magic number detection should return .jpg, got {resource.extension}"