test gpx, weather, utils

tests/test_utils.py

@@ -0,0 +1,62 @@
+# test_utils.py
+#
+# author: deng
+# date: 20251129
+
+import base64
+import tempfile
+from pathlib import Path
+
+import pytest
+
+
+class TestConvertImageToBase64:
+    """Test cases for convert_image_to_base64 function."""
+
+    @pytest.fixture
+    def temp_image_file(self):
+        """Create a temporary image file for testing."""
+        with tempfile.NamedTemporaryFile(mode='wb', suffix='.jpg', delete=False) as f:
+            # Create a simple test image (1x1 red pixel)
+            f.write(b'\xff\xd8\xff\xe0\x00\x10JFIF')  # JPEG header
+            temp_path = f.name
+        yield temp_path
+        # Cleanup
+        Path(temp_path).unlink(missing_ok=True)
+
+    def test_convert_image_to_base64_returns_string(self, temp_image_file):
+        """Test that function returns a string."""
+        from hiking_assistant.utils import convert_image_to_base64
+
+        result = convert_image_to_base64(temp_image_file)
+        assert isinstance(result, str)
+
+    def test_convert_image_to_base64_returns_valid_base64(self, temp_image_file):
+        """Test that returned string is valid base64."""
+        from hiking_assistant.utils import convert_image_to_base64
+
+        result = convert_image_to_base64(temp_image_file)
+        # Try to decode - should not raise exception
+        decoded = base64.b64decode(result)
+        assert isinstance(decoded, bytes)
+
+    def test_convert_image_to_base64_roundtrip(self, temp_image_file):
+        """Test roundtrip conversion (file -> base64 -> binary)."""
+        from hiking_assistant.utils import convert_image_to_base64
+
+        # Read original file
+        with open(temp_image_file, 'rb') as f:
+            original_data = f.read()
+
+        # Convert to base64 and back
+        base64_str = convert_image_to_base64(temp_image_file)
+        decoded_data = base64.b64decode(base64_str)
+
+        assert decoded_data == original_data
+
+    def test_convert_image_to_base64_nonexistent_file_raises_error(self):
+        """Test that function raises error for non-existent file."""
+        from hiking_assistant.utils import convert_image_to_base64
+
+        with pytest.raises(FileNotFoundError):
+            convert_image_to_base64('/nonexistent/path/to/image.jpg')