public void NotExpressionReturnsOppositeValueForConstantValue()
{
{
// !false => true
IExpression ne = new NotExpression(new ConstantTerminalExpression(false));
Assert.AreEqual(true, ne.Interpret(new Context()));
}
{
// !true => false
IExpression ne = new NotExpression(new ConstantTerminalExpression(true));
Assert.AreEqual(false, ne.Interpret(new Context()));
}
}
public void NotExpressionReturnsOppositeValueForVariable()
{
{
// !a => true for a = false
IExpression ne = new NotExpression(new VariableTerminalExpression("a"));
Assert.AreEqual(true, ne.Interpret(new Context(new Dictionary <string, bool>()
{
{ "a", false }, { "b", true }
})));
}
{
// !b => false for b = true
IExpression ne = new NotExpression(new VariableTerminalExpression("b"));
Assert.AreEqual(false, ne.Interpret(new Context(new Dictionary <string, bool>()
{
{ "a", false }, { "b", true }
})));
}
}