def test_font_style_setter(self):
# Test setter in initialization
vg = VisualGenerator(font_style='Bold')
self.assertEqual(vg._font_style, 'Bold')
self.assertEqual(vg._font_face.ft_face.family_name, 'Noto Sans CJK SC')
self.assertEqual(vg._font_face.ft_face.style_name, 'Bold')
# Test setter after initialization
vg.font_style = 'Thin'
self.assertEqual(vg._font_style, 'Thin')
self.assertEqual(vg._font_face.ft_face.family_name, 'Noto Sans CJK SC')
self.assertEqual(vg._font_face.ft_face.style_name, 'Thin')
# TODO: Add checking so that exception raises when style not found!
# Test that non-exist font style results in default style
vg.font_style = '123'
self.assertEqual(vg._font_style, '123')
self.assertEqual(vg._font_face.ft_face.family_name, 'Noto Sans CJK SC')
self.assertEqual(vg._font_face.ft_face.style_name, 'Regular')
# Test interference
vg.font_name = 'Noto Serif CJK SC'
self.assertEqual(vg._font_face.ft_face.family_name,
'Noto Serif CJK SC')
vg.font_style = 'SemiBold'
self.assertEqual(vg._font_face.ft_face.family_name,
'Noto Serif CJK SC')
def test_visualize_single(self):
# This method is very hard to test. We only make sure that the final
# image is created.
vg = VisualGenerator(out_dir=self.tmp_dir)
vg.visualize_single('a')
vg.font_style = 'Bold'
vg.visualize_single('b')
vg.font_style = None
vg.visualize_single('c')
# Assert that image files exist
file_path = os.path.join(self.tmp_dir,
'U+0061_Noto Sans CJK SC_Default.png')
self.assertTrue(os.path.isfile(file_path))
file_path = os.path.join(self.tmp_dir,
'U+0062_Noto Sans CJK SC_Bold_Default.png')
self.assertTrue(os.path.isfile(file_path))
file_path = os.path.join(self.tmp_dir,
'U+0063_Noto Sans CJK SC_Default.png')
self.assertTrue(os.path.isfile(file_path))
# Mock 4 private methods:
# self._check_create_out_dir_abs
# self._center_text
# self._position_text
# self._get_filename
with patch.object(vg, '_center_text') as c_t, \
patch.object(vg, '_position_text') as p_t, \
patch.object(vg, '_get_filename',
return_value='DontCare') as g_f, \
patch.object(vg, '_check_create_out_dir_abs') as out_dir_func:
vg.visualize_single('d')
c_t.assert_called_once()
p_t.assert_not_called()
g_f.assert_called_once_with('d')
out_dir_func.assert_called_once()
with patch.object(vg, '_center_text') as c_t, \
patch.object(vg, '_position_text') as p_t, \
patch.object(vg, '_get_filename',
return_value='DontCare') as g_f, \
patch.object(vg, '_check_create_out_dir_abs') as out_dir_func:
vg.visualize_single('e', False, x=10, y=10)
c_t.assert_not_called()
p_t.assert_called_once()
g_f.assert_called_once_with('e')
out_dir_func.assert_not_called()
# Test exception
with self.assertRaises(ValueError):
vg.visualize_single('f', x=10, y=None)
def test_font_name_setter(self):
# Test setter in initialization
vg = VisualGenerator(font_name='Noto Serif CJK SC')
self.assertEqual(vg._font_name, 'Noto Serif CJK SC')
self.assertEqual(vg._font_face.ft_face.family_name,
'Noto Serif CJK SC')
self.assertEqual(vg._font_face.ft_face.style_name, 'Regular')
# Test setter after initialization
vg.font_name = 'Noto Serif CJK TC'
self.assertEqual(vg._font_name, 'Noto Serif CJK TC')
self.assertEqual(vg._font_face.ft_face.family_name,
'Noto Serif CJK TC')
self.assertEqual(vg._font_face.ft_face.style_name, 'Regular')
# Test exception
with self.assertRaises(ValueError):
vg = VisualGenerator(font_name='Non Exists Font Name')
with self.assertRaises(ValueError):
vg.font_name = 'Non Exists Font Name'
# Test interference
vg.font_style = 'Light'
self.assertEqual(vg._font_face.ft_face.style_name, 'Light')
vg.font_name = 'Noto Sans CJK JP'
self.assertEqual(vg._font_face.ft_face.style_name, 'Light')