public void EvaluateTest2()
{
var expression = "(10 + (-5 * 2))";
var tokens = Tokenizer.Default.GetTokens(expression);
var rpn = MathEvaluator.InfixToRPN(tokens);
Assert.AreEqual(0, MathEvaluator.Evaluate(rpn));
Assert.AreEqual(0, MathEvaluator.Evaluate(expression));
}
public void EvaluateTest3()
{
var expression = "max(10 - 4, 2 + 6)";
var tokens = Tokenizer.Default.GetTokens(expression);
var rpn = MathEvaluator.InfixToRPN(tokens);
Assert.AreEqual(8, MathEvaluator.Evaluate(rpn));
Assert.AreEqual(8, MathEvaluator.Evaluate(expression));
}
public void InfixToRPNTest4()
{
var tokens = Tokenizer.Default.GetTokens("e^2 + 1");
var rpn = MathEvaluator.InfixToRPN(tokens);
// e 2 ^ 1 +
var expected = new string[] { "e", "2", "^", "1", "+" };
Assert.AreEqual(expected, rpn.ToStringExpression(), "{0}\n{1}", rpn.CollectionToString(s => s.Value), rpn.CollectionToString());
}
public void InfixToRPNTest3()
{
var tokens = Tokenizer.Default.GetTokens("max(10 - 4, 2 + 6)");
var rpn = MathEvaluator.InfixToRPN(tokens);
// 10 4 - 2 6 + max
var expected = new string[] { "10", "4", "-", "2", "6", "+", "max" };
Assert.AreEqual(expected, TokenExtensions.ToStringArray(rpn), "{0}\n{1}", rpn.CollectionToString(s => s.Value), rpn.CollectionToString());
}
public void InfixToRPNTest2()
{
var tokens = Tokenizer.Default.GetTokens("(10 + (-5 * 2))");
var rpn = MathEvaluator.InfixToRPN(tokens);
//10 5 - 2 * +
var expected = new string[] { "10", "5", "-", "2", "*", "+" };
Assert.AreEqual(expected, TokenExtensions.ToStringArray(rpn), "{0}\n{1}", rpn.CollectionToString(s => s.Value), rpn.CollectionToString());
}
public void InfixToRPNTest1()
{
var expression = "10 + 5 * 2";
var tokens = Tokenizer.Default.GetTokens(expression);
var rpn = MathEvaluator.InfixToRPN(tokens);
// 10 5 2 * +
var expected = new string[] { "10", "5", "2", "*", "+" };
CollectionAssert.AreEqual(expected, rpn.ToStringExpression(), rpn.Select(s => s.ToString()).AsString());
}
public void EvaluateTest4()
{
var expression = "e^2 + 1";
var tokens = Tokenizer.Default.GetTokens(expression);
var rpn = MathEvaluator.InfixToRPN(tokens);
var result = Math.Exp(2) + 1;
var delta = 0.00001;
Assert.AreEqual(result, MathEvaluator.Evaluate(rpn), delta);
Assert.AreEqual(result, MathEvaluator.Evaluate(expression), delta);
}
public void EvaluateTest5()
{
var expression = "(5 * 2) + 1";
var tokens = Tokenizer.Default.GetTokens(expression);
var rpn = MathEvaluator.InfixToRPN(tokens);
var expectedRPN = new string[] { "5", "2", "*", "1", "+" };
CollectionAssert.AreEqual(expectedRPN, rpn.ToStringExpression(), rpn.ToStringExpression().AsString());
Assert.AreEqual(11, MathEvaluator.Evaluate(expression));
Assert.AreEqual(11, MathEvaluator.Evaluate(rpn));
}
