[ui] feature: themes

tests/view/core/test_stylesheet.py

@@ -0,0 +1,116 @@
+from unittest import TestCase
+
+from bauh import stylesheet
+
+
+class StylesheetTest(TestCase):
+
+    def test__process_var_of_vars__it_should_remove_vars_pointing_to_themselves(self):
+        var_map = {
+            'abc': 'aaa',
+            'xxx': '@xxx'
+        }
+
+        stylesheet.process_var_of_vars(var_map)
+
+        self.assertEqual(1, len(var_map))
+        self.assertIn('abc', var_map)
+        self.assertEqual('aaa', var_map['abc'])
+
+    def test__process_var_of_vars__it_should_remove_vars_pointing_to_unknown_vars(self):
+        var_map = {
+            'abc': 'aaa',
+            'xxx': '@def'
+        }
+
+        stylesheet.process_var_of_vars(var_map)
+
+        self.assertEqual(1, len(var_map))
+        self.assertIn('abc', var_map)
+        self.assertEqual('aaa', var_map['abc'])
+
+    def test__process_var_of_vars__it_should_not_replace_invalid_expressions(self):
+        var_map = {
+            'abc': 'aaa',
+            'bcd': '@ xpto'  # has a space between @ and 'xpto'
+        }
+
+        self.assertEqual(2, len(var_map))
+        self.assertIn('abc', var_map)
+        self.assertEqual('aaa', var_map['abc'])
+        self.assertIn('bcd', var_map)
+        self.assertEqual('@ xpto', var_map['bcd'])
+
+    def test__process_var_of_vars__it_should_replace_value_at_first_iteration(self):
+        var_map = {
+            'abc': 'aaa',
+            'xxx': '@abc'
+        }
+
+        stylesheet.process_var_of_vars(var_map)
+
+        self.assertEqual(2, len(var_map))
+        self.assertIn('abc', var_map)
+        self.assertEqual('aaa', var_map['abc'])
+        self.assertIn('xxx', var_map)
+        self.assertEqual('aaa', var_map['xxx'])
+
+    def test__process_var_of_vars__it_should_replace_value_at_second_iteration(self):
+        var_map = {
+            'abc': 'aaa',
+            'def': '@abc',
+            'xxx': '@def'
+        }
+
+        stylesheet.process_var_of_vars(var_map)
+
+        self.assertEqual(3, len(var_map))
+        self.assertIn('abc', var_map)
+        self.assertEqual('aaa', var_map['abc'])
+        self.assertIn('def', var_map)
+        self.assertEqual('aaa', var_map['def'])
+        self.assertIn('xxx', var_map)
+        self.assertEqual('aaa', var_map['xxx'])
+
+    def test__process_var_of_vars__it_should_replace_value_at_third_iteration(self):
+        var_map = {
+            'abc': 'aaa',
+            'def': '@abc',
+            'fgh': '@def',
+            'xxx': '@fgh'
+        }
+
+        stylesheet.process_var_of_vars(var_map)
+
+        self.assertEqual(4, len(var_map))
+        self.assertIn('abc', var_map)
+        self.assertEqual('aaa', var_map['abc'])
+        self.assertIn('def', var_map)
+        self.assertEqual('aaa', var_map['def'])
+        self.assertIn('fgh', var_map)
+        self.assertEqual('aaa', var_map['fgh'])
+        self.assertIn('xxx', var_map)
+        self.assertEqual('aaa', var_map['xxx'])
+
+    def test__process_var_of_vars__it_should_replace_multiple_vars(self):
+        var_map = {
+            'abc': 'aaa',
+            'def': '@abc',
+            'fgh': 'bbb',
+            'ijk': '@fgh',
+            'lmn': '@ijk'
+        }
+
+        stylesheet.process_var_of_vars(var_map)
+
+        self.assertEqual(5, len(var_map))
+        self.assertIn('abc', var_map)
+        self.assertEqual('aaa', var_map['abc'])
+        self.assertIn('def', var_map)
+        self.assertEqual('aaa', var_map['def'])
+        self.assertIn('fgh', var_map)
+        self.assertEqual('bbb', var_map['fgh'])
+        self.assertIn('ijk', var_map)
+        self.assertEqual('bbb', var_map['ijk'])
+        self.assertIn('lmn', var_map)
+        self.assertEqual('bbb', var_map['lmn'])