public void SaveTest_Middle()
{
//Create an ODE initial value problem
ODEInitialValueProblem ivp = new ODEInitialValueProblem(3, 0.2, 0);
ExpressionParser parser = new ExpressionParser();
//Define a system in which the solution will be (3,4,5) at all times
ivp.F.funcs[0] = parser.EvaluateExpression("0").ToDelegate("t");
ivp.F.funcs[1] = parser.EvaluateExpression("0").ToDelegate("t");
ivp.F.funcs[2] = parser.EvaluateExpression("0").ToDelegate("t");
ivp.SetState(new VectorND(3, 4, 5), 0);
//Solve the problem
ivp.SolveTo(3);
//save this data to file
StreamWriter fout = new StreamWriter("testing.csv");
ivp.SaveData(fout);
fout.Close();
//Read the data file and check its output
string line = "";
StreamReader fin = new StreamReader("testing.csv");
fin.ReadLine();
fin.ReadLine();
line = fin.ReadLine();
fin.Close();
//Delete the file
File.Delete("testing.csv");
Assert.AreEqual("0.4,3,4,5,", line);
}
//Saves object motion data to file
public void SaveData(StreamWriter fout)
{
ivp.SaveData(fout);
}