public void TestGetVariables1()
{
Formula f = new Formula("4 + 6 -s + r3 + r3 - t + a5a", IdentityFn, TrueValid);
Assert.IsTrue(f.GetVariables().Count == 4);
Assert.IsTrue(f.GetVariables().Contains("s"));
Assert.IsTrue(f.GetVariables().Contains("r3"));
Assert.IsTrue(f.GetVariables().Contains("t"));
Assert.IsTrue(f.GetVariables().Contains("a5a"));
}
/// <summary>
/// Constucts a Formula.
/// </summary>
/// <param name="f"></param>
/// <param name="N"></param>
/// <param name="V"></param>
public Formula(string f, Normalizer N, Validator V)
{
//Checks for null input to constuctor.
if (f == null || N == null || V == null)
{
throw new ArgumentNullException("Requires a non-null formula, Normalizer and Validator to constructor.");
}
Formula newf = new Formula(f);
var normvar = new List <string>();
string final = newf.output;
//Runs checks on the variables of the formula f when normalized and validated.
foreach (string var in newf.GetVariables())
{
if (!Regex.IsMatch(N(var), varPattern))
{
throw new FormulaFormatException("Normalized variables did not pass standard formula creation requirements for variables.");
}
if (!V(N(var)))
{
throw new FormulaFormatException("Normalized variables did not pass Validator test.");
}
normvar.Add(N(var));
final = final.Replace(var, N(var));
}
//Final passing formula is created.
Variables = normvar;
output = final;
}
public void TestGetVariablesEmpty()
{
Formula f = new Formula();
HashSet <string> vars = (HashSet <string>)f.GetVariables();
Assert.AreEqual(0, vars.Count);
}
public void TestGetVariablesNoVariables()
{
Formula f = new Formula("7 - 3");
HashSet <string> result = (HashSet <string>)f.GetVariables();
Assert.AreEqual(0, result.Count);
}
public void GetVars1()
{
Formula f = new Formula("0");
var expected = new HashSet <string>();
Assert.IsTrue(expected.SetEquals(f.GetVariables()));
}
public void GetVars5()
{
Formula f = new Formula("x+y", s => s.ToUpper(), s => true);
var expected = new HashSet <string>();
expected.Add("X");
expected.Add("Y");
Assert.IsTrue(expected.SetEquals(f.GetVariables()));
}
public void GetVars6()
{
Formula f = new Formula("x+y+z", s => s + s, s => true);
var expected = new HashSet <string>();
expected.Add("xx");
expected.Add("yy");
expected.Add("zz");
Assert.IsTrue(expected.SetEquals(f.GetVariables()));
}
public void Test35()
{
Formula f = new Formula("a-a*a/a", s => s.ToUpper(), s => (s == s.ToUpper()));
foreach (string s in f.GetVariables())
{
Assert.AreEqual(s, "A");
}
Assert.AreEqual(0, (double)f.Evaluate(s => 3), 1e-9);
}
public void GetVars3()
{
Formula f = new Formula("a * b - c + d / e * 2.5e6");
var expected = new HashSet <string>();
expected.Add("a");
expected.Add("b");
expected.Add("c");
expected.Add("d");
expected.Add("e");
var actual = f.GetVariables();
Assert.IsTrue(expected.SetEquals(actual));
}
public void TestGetVariablesNormalized()
{
Formula f = new Formula("DUCK - TREE", s => s.ToLower(), s => Char.IsLetter(s[0]));
HashSet <string> result = (HashSet <string>)f.GetVariables();
HashSet <string> goal = new HashSet <string>();
goal.Add("duck");
goal.Add("tree");
goal.Add("ham");
foreach (string s in result)
{
Assert.AreEqual(true, goal.Contains(s));
}
}
public void GetVars4()
{
Formula f = new Formula("a * a + b * c - d * d");
var expected = new HashSet <string>();
expected.Add("a");
expected.Add("b");
expected.Add("c");
expected.Add("d");
var actual = f.GetVariables();
Assert.AreEqual(4, actual.Count);
Assert.IsTrue(expected.SetEquals(actual));
}
public void TestGetVariables()
{
Formula f = new Formula("(duck - tree) / ham");
HashSet <string> result = (HashSet <string>)f.GetVariables();
HashSet <string> goal = new HashSet <string>();
goal.Add("duck");
goal.Add("tree");
goal.Add("ham");
foreach (string s in result)
{
Assert.AreEqual(true, goal.Contains(s));
}
Assert.AreEqual(3, result.Count);
}
public void GetVars5()
{
Formula f = new Formula("x+y", s => s.ToUpper(), s => true);
var expected = new HashSet<string>();
expected.Add("X");
expected.Add("Y");
Assert.IsTrue(expected.SetEquals(f.GetVariables()));
}
public void TestGetVariablesNorm()
{
Formula f = new Formula("8", IdentityFn, TrueValid);
Assert.IsTrue(f.GetVariables().Count == 0);
}
public void GetVars2()
{
Formula f = new Formula("x");
var expected = new HashSet<string>();
expected.Add("x");
Assert.IsTrue(expected.SetEquals(f.GetVariables()));
}
public void GetVars3()
{
Formula f = new Formula("a * b - c + d / e * 2.5e6");
var expected = new HashSet<string>();
expected.Add("a");
expected.Add("b");
expected.Add("c");
expected.Add("d");
expected.Add("e");
var actual = f.GetVariables();
Assert.IsTrue(expected.SetEquals(actual));
}
public void GetVars4()
{
Formula f = new Formula("a * a + b * c - d * d");
var expected = new HashSet<string>();
expected.Add("a");
expected.Add("b");
expected.Add("c");
expected.Add("d");
var actual = f.GetVariables();
Assert.AreEqual(4, actual.Count);
Assert.IsTrue(expected.SetEquals(actual));
}
public void ZeroArg2()
{
Formula f = new Formula();
Assert.AreEqual(0, f.GetVariables().Count);
}
public void TestGetVariablesZero()
{
Formula f = new Formula("0");
Assert.IsTrue(f.GetVariables().Count == 0);
}
public void GetVars6()
{
Formula f = new Formula("x+y+z", s => s + s, s => true);
var expected = new HashSet<string>();
expected.Add("xx");
expected.Add("yy");
expected.Add("zz");
Assert.IsTrue(expected.SetEquals(f.GetVariables()));
}
public void ZeroArg2()
{
Formula f = new Formula();
Assert.AreEqual(0, f.GetVariables().Count);
}
