// add brackets
private void add_brackets_Click(object sender, RoutedEventArgs e)
{
var f = new ParenthesesDecorator();
f.Subformula = formula;
formula = f;
formula_text.Content = string.Format("({0})", formula_text.Content);
}
public void Test()
{
ILowestCommonDenominator lowestCommonDenominator = new ParenthesesDecorator(new SquareBracketDecorator(new Core()));
Assert.That(lowestCommonDenominator.ToString(1), Is.EqualTo("([1])"));
Assert.That(lowestCommonDenominator.ToString("abc"), Is.EqualTo("([abc])"));
Assert.That(lowestCommonDenominator.ToString(3.142), Is.EqualTo("([3.142])"));
lowestCommonDenominator = new SquareBracketDecorator(new ParenthesesDecorator(new Core()));
Assert.That(lowestCommonDenominator.ToString(1), Is.EqualTo("[(1)]"));
Assert.That(lowestCommonDenominator.ToString("abc"), Is.EqualTo("[(abc)]"));
Assert.That(lowestCommonDenominator.ToString(3.142), Is.EqualTo("[(3.142)]"));
lowestCommonDenominator = new ParenthesesDecorator(new ParenthesesDecorator(new Core()));
Assert.That(lowestCommonDenominator.ToString(1), Is.EqualTo("((1))"));
Assert.That(lowestCommonDenominator.ToString("abc"), Is.EqualTo("((abc))"));
Assert.That(lowestCommonDenominator.ToString(3.142), Is.EqualTo("((3.142))"));
}
