font

tests/unit/ui/test_font_ui_helpers.py

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+"""Unit tests for font sizing UI helpers."""
+
+from types import SimpleNamespace
+import importlib
+
+import pytest
+
+
+@pytest.fixture
+def font_helpers_module():
+    """Import the font helper utilities."""
+    return importlib.import_module("src.ui.font_helpers")
+
+
+def test_font_size_ui_state_manual_when_fitting_disabled(monkeypatch, font_helpers_module):
+    """Manual font size should remain enabled when fitting is off."""
+    monkeypatch.setattr(font_helpers_module, "has_text_fitting", lambda: True)
+    props = SimpleNamespace(enable_text_fitting=False, text_fitting_mode="FIT_CONTAIN")
+
+    enabled, message = font_helpers_module.font_size_ui_state(props)
+
+    assert enabled is True
+    assert message == ""
+
+
+def test_font_size_ui_state_auto_when_fitting_enabled(monkeypatch, font_helpers_module):
+    """Font size control shows auto-sizing message when fitting is active."""
+    monkeypatch.setattr(font_helpers_module, "has_text_fitting", lambda: True)
+    props = SimpleNamespace(enable_text_fitting=True, text_fitting_mode="FIT_WIDTH")
+
+    enabled, message = font_helpers_module.font_size_ui_state(props)
+
+    assert enabled is False
+    assert "Fit Width" in message
+
+
+def test_font_size_ui_state_without_text_fitting_feature(monkeypatch, font_helpers_module):
+    """Without text fitting support, manual font sizing stays enabled."""
+    monkeypatch.setattr(font_helpers_module, "has_text_fitting", lambda: False)
+    props = SimpleNamespace(enable_text_fitting=True, text_fitting_mode="FIT_WIDTH")
+
+    enabled, message = font_helpers_module.font_size_ui_state(props)
+
+    assert enabled is True
+    assert message == ""