fix all tests

tests/utils/test_font_utilities.py

@@ -0,0 +1,132 @@
+"""
+Tests for the test font utilities module.
+
+These tests verify that the bundled font system works correctly for consistent testing.
+"""
+
+import unittest
+import os
+from PIL import ImageFont
+
+from tests.utils.test_fonts import (
+    get_bundled_font_path,
+    verify_bundled_font_available,
+    create_test_font,
+    create_default_test_font,
+    ensure_consistent_font_in_tests
+)
+from pyWebLayout.style.fonts import Font, FontWeight, FontStyle, TextDecoration
+
+
+class TestFontUtilities(unittest.TestCase):
+    """Test cases for font utility functions."""
+    
+    def test_get_bundled_font_path_finds_font(self):
+        """Test that get_bundled_font_path finds the bundled font."""
+        font_path = get_bundled_font_path()
+        self.assertIsNotNone(font_path, "Bundled font path should not be None")
+        self.assertTrue(os.path.exists(font_path), f"Font file should exist at {font_path}")
+        self.assertTrue(font_path.endswith("DejaVuSans.ttf"), "Font path should end with DejaVuSans.ttf")
+    
+    def test_verify_bundled_font_available(self):
+        """Test that the bundled font can be verified and loaded."""
+        self.assertTrue(verify_bundled_font_available(), "Bundled font should be available and loadable")
+    
+    def test_create_test_font_with_defaults(self):
+        """Test creating a test font with default parameters."""
+        font = create_test_font()
+        self.assertIsInstance(font, Font)
+        self.assertEqual(font.font_size, 16)
+        self.assertEqual(font.colour, (0, 0, 0))
+        self.assertEqual(font.weight, FontWeight.NORMAL)
+        self.assertEqual(font.style, FontStyle.NORMAL)
+        self.assertEqual(font.decoration, TextDecoration.NONE)
+    
+    def test_create_test_font_with_custom_parameters(self):
+        """Test creating a test font with custom parameters."""
+        font = create_test_font(
+            font_size=24,
+            colour=(255, 0, 0),
+            weight=FontWeight.BOLD,
+            style=FontStyle.ITALIC,
+            decoration=TextDecoration.UNDERLINE
+        )
+        self.assertIsInstance(font, Font)
+        self.assertEqual(font.font_size, 24)
+        self.assertEqual(font.colour, (255, 0, 0))
+        self.assertEqual(font.weight, FontWeight.BOLD)
+        self.assertEqual(font.style, FontStyle.ITALIC)
+        self.assertEqual(font.decoration, TextDecoration.UNDERLINE)
+    
+    def test_create_default_test_font(self):
+        """Test creating a default test font."""
+        font = create_default_test_font()
+        self.assertIsInstance(font, Font)
+        self.assertEqual(font.font_size, 16)
+        self.assertEqual(font.colour, (0, 0, 0))
+    
+    def test_ensure_consistent_font_in_tests_succeeds(self):
+        """Test that ensure_consistent_font_in_tests runs without error when font is available."""
+        # This should not raise any exceptions if the font is properly available
+        try:
+            ensure_consistent_font_in_tests()
+        except RuntimeError:
+            self.fail("ensure_consistent_font_in_tests() raised RuntimeError when font should be available")
+    
+    def test_bundled_font_loads_with_pil(self):
+        """Test that the bundled font can be loaded directly with PIL."""
+        font_path = get_bundled_font_path()
+        self.assertIsNotNone(font_path)
+        
+        # Test loading with different sizes
+        for size in [12, 16, 24, 48]:
+            with self.subTest(size=size):
+                pil_font = ImageFont.truetype(font_path, size)
+                self.assertIsNotNone(pil_font)
+    
+    def test_font_metrics_consistency(self):
+        """Test that font metrics are consistent between different Font objects using the same parameters."""
+        font1 = create_test_font(font_size=16)
+        font2 = create_test_font(font_size=16)
+        
+        # Both fonts should have the same size
+        self.assertEqual(font1.font_size, font2.font_size)
+        
+        # Test that text measurements are consistent
+        # This is a basic check - in real usage, text measurement consistency is what matters most
+        self.assertEqual(font1.font_size, font2.font_size)
+    
+    def test_different_sizes_create_different_fonts(self):
+        """Test that different font sizes create fonts with different metrics."""
+        small_font = create_test_font(font_size=12)
+        large_font = create_test_font(font_size=24)
+        
+        self.assertNotEqual(small_font.font_size, large_font.font_size)
+        self.assertEqual(small_font.font_size, 12)
+        self.assertEqual(large_font.font_size, 24)
+
+
+class TestFontPathResolution(unittest.TestCase):
+    """Test cases for font path resolution from different locations."""
+    
+    def test_font_path_is_absolute(self):
+        """Test that the returned font path is absolute."""
+        font_path = get_bundled_font_path()
+        if font_path:
+            self.assertTrue(os.path.isabs(font_path), "Font path should be absolute")
+    
+    def test_font_path_points_to_file(self):
+        """Test that the font path points to a file, not a directory."""
+        font_path = get_bundled_font_path()
+        if font_path:
+            self.assertTrue(os.path.isfile(font_path), "Font path should point to a file")
+    
+    def test_font_file_has_correct_extension(self):
+        """Test that the font file has the expected .ttf extension."""
+        font_path = get_bundled_font_path()
+        if font_path:
+            self.assertTrue(font_path.lower().endswith('.ttf'), "Font file should have .ttf extension")
+
+
+if __name__ == '__main__':
+    unittest.main()