public Token(Parser.ValType ivType, string isValue)
{
vType = ivType;
sValue = isValue;
if (vType == Parser.ValType.NUMBER)
{
if(sValue.Equals("PI"))
dValue = Math.PI;
else
dValue =Parser.stringToDouble(sValue);
}
}
public void parseFunctionTest()
{
//test setup
Parser target = new Parser(); // TODO: Initialize to an appropriate value
string function = " x*6*x "; // TODO: Initialize to an appropriate value
List<Token> expected = new List<Token>(); // TODO: Initialize to an appropriate value
List<Token> actual = new List<Token>();
expected.Add(new Token(Parser.ValType.VARIABLE,"X"));
expected.Add(new Token(Parser.ValType.OPtd, "*"));
expected.Add(new Token(Parser.ValType.NUMBER, "6"));
expected.Add(new Token(Parser.ValType.OPtd, "*"));
expected.Add(new Token(Parser.ValType.VARIABLE, "X"));
//test method
try
{
actual = target.parseFunction(function);
}
catch (InvalidInputException ex)
{
Assert.Fail(ex.Message);
}
//show output
StringBuilder output = new StringBuilder();
foreach (Token str in actual)
{
output.Append(str.ToString());
output.Append("_");
}
Console.Write(output.ToString());
//verify output
if (expected.Count != actual.Count)
Assert.Fail("Input and Output are different lengths");
for (int i = 0; i < expected.Count; i++)
{
if (!expected[i].isEqual(actual[i]))
Assert.Fail("Values not equal at" + i);
}
Assert.IsTrue(true);
//Assert.Inconclusive("Verify the correctness of this test method.");
}
//check for function validity before constructing
public Function(string inputFuncion, string from, string to, string increments)
{
this.functionStr = inputFuncion;
this.from = double.Parse(from);
this.to = double.Parse(to);
this.increments = double.Parse(increments);
//how many inputs to function are needed
int numberOfInputs = (int)Math.Abs((this.from - this.to) / this.increments)+1;
inputs = new double[numberOfInputs];
outputs = new double[numberOfInputs];
//parse that fucntion
fParser = new Parser();
fParser.inputFuntion(functionStr);
//calculate values
for (int i = 0; i < numberOfInputs; i++)
{
outputs[i] = fParser.evalFuncAt(this.from + this.increments * i);
}
}
