refactor applications to delegate responsibilites

tests/unit/managers/test_settings.py

@@ -0,0 +1,220 @@
+"""
+Unit tests for SettingsManager.
+
+Tests settings management in isolation using mocks.
+"""
+
+import unittest
+from unittest.mock import Mock, MagicMock
+
+from dreader.managers.settings import SettingsManager
+
+
+class TestSettingsManager(unittest.TestCase):
+    """Test SettingsManager in isolation"""
+
+    def setUp(self):
+        """Set up test environment"""
+        self.manager = SettingsManager()
+
+    def test_initialization(self):
+        """Test manager initializes correctly"""
+        manager = SettingsManager()
+
+        self.assertEqual(manager.font_scale, 1.0)
+        self.assertEqual(manager.font_scale_step, 0.1)
+        self.assertIsNone(manager.manager)
+
+    def test_get_font_size(self):
+        """Test getting current font size"""
+        self.assertEqual(self.manager.get_font_size(), 1.0)
+
+        self.manager.font_scale = 1.5
+        self.assertEqual(self.manager.get_font_size(), 1.5)
+
+    def test_set_font_size_without_manager(self):
+        """Test setting font size without layout manager returns None"""
+        result = self.manager.set_font_size(1.5)
+        self.assertIsNone(result)
+
+    def test_set_font_size_with_manager(self):
+        """Test setting font size with layout manager"""
+        # Create mock manager
+        mock_layout_manager = Mock()
+        mock_page = Mock()
+        mock_page.render.return_value = "rendered_page"
+        mock_layout_manager.set_font_scale.return_value = mock_page
+        mock_layout_manager.font_scale = 1.0
+
+        self.manager.set_manager(mock_layout_manager)
+
+        # Set font size
+        result = self.manager.set_font_size(1.5)
+
+        self.assertIsNotNone(result)
+        self.assertEqual(result, "rendered_page")
+        self.assertEqual(self.manager.font_scale, 1.5)
+        mock_layout_manager.set_font_scale.assert_called_once_with(1.5)
+
+    def test_font_size_clamping(self):
+        """Test font size is clamped between 0.5x and 3.0x"""
+        mock_layout_manager = Mock()
+        mock_page = Mock()
+        mock_page.render.return_value = "rendered_page"
+        mock_layout_manager.set_font_scale.return_value = mock_page
+        mock_layout_manager.font_scale = 1.0
+
+        self.manager.set_manager(mock_layout_manager)
+
+        # Test upper bound
+        self.manager.set_font_size(5.0)
+        self.assertEqual(self.manager.font_scale, 3.0)
+
+        # Test lower bound
+        self.manager.set_font_size(0.1)
+        self.assertEqual(self.manager.font_scale, 0.5)
+
+    def test_increase_font_size(self):
+        """Test increasing font size by one step"""
+        mock_layout_manager = Mock()
+        mock_page = Mock()
+        mock_page.render.return_value = "rendered_page"
+        mock_layout_manager.set_font_scale.return_value = mock_page
+        mock_layout_manager.font_scale = 1.0
+
+        self.manager.set_manager(mock_layout_manager)
+
+        initial_size = self.manager.font_scale
+        self.manager.increase_font_size()
+
+        self.assertEqual(self.manager.font_scale, initial_size + 0.1)
+
+    def test_decrease_font_size(self):
+        """Test decreasing font size by one step"""
+        mock_layout_manager = Mock()
+        mock_page = Mock()
+        mock_page.render.return_value = "rendered_page"
+        mock_layout_manager.set_font_scale.return_value = mock_page
+        mock_layout_manager.font_scale = 1.5
+
+        self.manager.set_manager(mock_layout_manager)
+        self.manager.font_scale = 1.5
+
+        self.manager.decrease_font_size()
+
+        self.assertAlmostEqual(self.manager.font_scale, 1.4, places=5)
+
+    def test_set_line_spacing(self):
+        """Test setting line spacing"""
+        mock_layout_manager = Mock()
+        mock_page = Mock()
+        mock_page.render.return_value = "rendered_page"
+        mock_layout_manager.get_current_page.return_value = mock_page
+        mock_layout_manager.page_style = Mock()
+        mock_layout_manager.page_style.line_spacing = 5
+
+        self.manager.set_manager(mock_layout_manager)
+
+        result = self.manager.set_line_spacing(10)
+
+        self.assertIsNotNone(result)
+        mock_layout_manager.increase_line_spacing.assert_called_once_with(5)
+
+    def test_set_inter_block_spacing(self):
+        """Test setting inter-block spacing"""
+        mock_layout_manager = Mock()
+        mock_page = Mock()
+        mock_page.render.return_value = "rendered_page"
+        mock_layout_manager.get_current_page.return_value = mock_page
+        mock_layout_manager.page_style = Mock()
+        mock_layout_manager.page_style.inter_block_spacing = 15
+
+        self.manager.set_manager(mock_layout_manager)
+
+        result = self.manager.set_inter_block_spacing(25)
+
+        self.assertIsNotNone(result)
+        mock_layout_manager.increase_inter_block_spacing.assert_called_once_with(10)
+
+    def test_set_word_spacing(self):
+        """Test setting word spacing"""
+        mock_layout_manager = Mock()
+        mock_page = Mock()
+        mock_page.render.return_value = "rendered_page"
+        mock_layout_manager.get_current_page.return_value = mock_page
+        mock_layout_manager.page_style = Mock()
+        mock_layout_manager.page_style.word_spacing = 0
+
+        self.manager.set_manager(mock_layout_manager)
+
+        result = self.manager.set_word_spacing(3)
+
+        self.assertIsNotNone(result)
+        mock_layout_manager.increase_word_spacing.assert_called_once_with(3)
+
+    def test_get_current_settings_without_manager(self):
+        """Test getting settings without layout manager"""
+        settings = self.manager.get_current_settings()
+
+        self.assertIsInstance(settings, dict)
+        self.assertEqual(settings['font_scale'], 1.0)
+        self.assertEqual(settings['line_spacing'], 5)
+        self.assertEqual(settings['inter_block_spacing'], 15)
+        self.assertEqual(settings['word_spacing'], 0)
+
+    def test_get_current_settings_with_manager(self):
+        """Test getting settings with layout manager"""
+        mock_layout_manager = Mock()
+        mock_layout_manager.page_style = Mock()
+        mock_layout_manager.page_style.line_spacing = 10
+        mock_layout_manager.page_style.inter_block_spacing = 20
+        mock_layout_manager.page_style.word_spacing = 3
+        mock_layout_manager.font_scale = 1.5
+
+        self.manager.set_manager(mock_layout_manager)
+        self.manager.font_scale = 1.5
+
+        settings = self.manager.get_current_settings()
+
+        self.assertEqual(settings['font_scale'], 1.5)
+        self.assertEqual(settings['line_spacing'], 10)
+        self.assertEqual(settings['inter_block_spacing'], 20)
+        self.assertEqual(settings['word_spacing'], 3)
+
+    def test_apply_settings(self):
+        """Test applying settings from dictionary"""
+        mock_layout_manager = Mock()
+        mock_page = Mock()
+        mock_page.render.return_value = "rendered_page"
+        mock_layout_manager.set_font_scale.return_value = mock_page
+        mock_layout_manager.get_current_page.return_value = mock_page
+        mock_layout_manager.page_style = Mock()
+        mock_layout_manager.page_style.line_spacing = 5
+        mock_layout_manager.page_style.inter_block_spacing = 15
+        mock_layout_manager.page_style.word_spacing = 0
+        mock_layout_manager.font_scale = 1.0
+
+        self.manager.set_manager(mock_layout_manager)
+
+        settings = {
+            'font_scale': 1.5,
+            'line_spacing': 10,
+            'inter_block_spacing': 20,
+            'word_spacing': 3
+        }
+
+        success = self.manager.apply_settings(settings)
+
+        self.assertTrue(success)
+        self.assertEqual(self.manager.font_scale, 1.5)
+
+    def test_apply_settings_without_manager(self):
+        """Test applying settings without layout manager returns False"""
+        settings = {'font_scale': 1.5}
+        success = self.manager.apply_settings(settings)
+
+        self.assertFalse(success)
+
+
+if __name__ == '__main__':
+    unittest.main()