def test_print_high_precedence(self):
root = EvalTreeNode(OPERATORS['m'], None,
EvalTreeNode(OPERATORS['!'], EvalTreeNode(5)))
tree = EvalTree(None)
tree.root = root
# it evaluates ! before display because of its high precedence
self.assertEqual(tree.verbose_result(), '-120 = -120')
def test_print_parentheses(self):
root = EvalTreeNode(
OPERATORS['*'], EvalTreeNode(2),
EvalTreeNode(OPERATORS['+'], EvalTreeNode(4), EvalTreeNode(8)))
tree = EvalTree(None)
tree.root = root
self.assertEqual(tree.verbose_result(), '2*(4+8) = 24')
def test_print_roll(self):
root = EvalTreeNode(
OPERATORS['+'], EvalTreeNode(1),
EvalTreeNode(OPERATORS['d'], EvalTreeNode(4), EvalTreeNode(20)))
tree = EvalTree(None)
tree.root = root
self.assertEqual(tree.verbose_result(),
'1+' + str(Roll([1, 20, 1, 20], 20)) + ' = 43')
def populate(self, tree: EvalTree):
"""Display the result of a roll represented by the tree."""
try:
tree.evaluate()
text = tree.verbose_result()
color = 'black'
if tree.is_critical():
color = 'green'
elif tree.is_fail():
color = 'red'
self.setText(text)
self.setFont(self.defaultFont)
self.setStyleSheet('color: {}'.format(color))
except EvaluationError as e:
self.show_error(e)
def test_print_unnecessary_parentheses(self):
tree = EvalTree('1+(2*4)')
self.assertEqual(tree.verbose_result(), '1+2*4 = 9')
def test_print_unary(self):
root = EvalTreeNode(OPERATORS['m'], None, EvalTreeNode(4))
tree = EvalTree(None)
tree.root = root
self.assertEqual(tree.verbose_result(), '-4 = -4')
def test_print_empty(self):
tree = EvalTree(None)
self.assertEqual(tree.verbose_result(), '')