public void MathFunctionOfSqrtReturnsCorrectValueFor2()
{
IExpression argument = new VariableX();
IExpression mathFun = new MathFunction(Math.Sqrt, argument);
Assert.AreEqual(Math.Sqrt(2.0), mathFun.Interpret(new Context(2)));
}
public void MultiplicationExpressionEvaluatesDifferenceOfComplexDecimalExpression()
{
// 3 / x - 7 + x / 2
IExpression three = new Constant(3);
IExpression x = new VariableX();
IExpression seven = new Constant(7);
IExpression two2 = new Constant(2);
IExpression result = new DivideExpression(three, x);
result = new SubtractionExpression(result, seven);
result = new SumExpression(result, x);
result = new DivideExpression(result, two2);
Context c = new Context(0.5);
var y = result.Interpret(c);
Assert.AreEqual(-0.25, y, 1e-10);
c = new Context(1.5);
y = result.Interpret(c);
Assert.AreEqual(-1.75, y, 1e-10);
}
public void SubtractionExpressionEvaluatesDifferenceInComplexExpression()
{
//mnozenje djeljenje testovi, cos i sin sa metodom
// 2 + x - 7 + x - 10
IExpression two = new Constant(2);
IExpression x = new VariableX();
IExpression seven = new Constant(7);
IExpression ten = new Constant(10);
IExpression result = new SumExpression(two, x);
result = new SubtractionExpression(result, seven);
result = new SumExpression(result, x);
result = new SubtractionExpression(result, ten);
Context c = new Context(5);
List <IExpression> operand = new List <IExpression>();
List <IExpression> operations = new List <IExpression>();
var y = result.Interpret(c);
Assert.AreEqual(-5, y, 1e-10);
c = new Context(-3);
y = result.Interpret(c);
Assert.AreEqual(-21, y, 1e-10);
}
public void MultiplicationExpressionEvaluatesDifferenceOfComplexDecimalExpression()
{
// 2 * x - 7 + x * 10
IExpression two = new Constant(2);
IExpression x = new VariableX();
IExpression seven = new Constant(7);
IExpression ten = new Constant(10);
IExpression result = new MultiplyExpression(two, x);
result = new SubtractionExpression(result, seven);
result = new SumExpression(result, x);
result = new MultiplyExpression(result, ten);
Context c = new Context(0.5);
var y = result.Interpret(c);
Assert.AreEqual(-55, y, 1e-10);
c = new Context(1.5);
y = result.Interpret(c);
Assert.AreEqual(-25, y, 1e-10);
}
public void SumExpressionInterpretForTwoVariablesReturnsTheirSum()
{
IExpression left = new VariableX();
IExpression right = new VariableX();
SumExpression sum = new SumExpression(left, right);
Context context = new Context(4);
Assert.AreEqual(8, sum.Interpret(context));
}
public void SumExpressionInterpretForConstantsAndVariableReturnsTheirSum()
{
IExpression left = new VariableX();
IExpression right = new Constant("2");
SumExpression sum = new SumExpression(left, right);
Context context = new Context(3);
Assert.AreEqual(5, sum.Interpret(context));
}
public IActionResult RemovePhoto(string CodliSecret)
{
//Budowa zmiennej sekretnej
/* ID_Galeri_#Codli-Secret#_ID_Zdjęcia */
string[] array = VariableX.SplitStringByString(CodliSecret, "#Codli-Secret#");
var zdjecie = (from c in db.Zdjecia where c.ZdjeciaModelId == int.Parse(array[1]) select c).FirstOrDefault <ZdjeciaModel>();
db.Remove(zdjecie);
db.SaveChanges();
return(Content("Wykonano!"));
}
public void MathFunctionReturnsValueAndCalculatesTheSentenceWithUnknown3()
{
// 2 + atan(x) + x
IExpression two = new Constant(2);
string function = "ata(x)";
FunctionConverter f = new FunctionConverter();
IExpression value = new VariableX();
IExpression mathFun = new MathFunction(f.Translator(function), value);
IExpression x = new VariableX();
IExpression result = new SumExpression(two, mathFun);
result = new SumExpression(result, x);
Context c = new Context(1);
var y = result.Interpret(c);
Assert.AreEqual(3.785, y, 4);
}
public void MathFunctionReturnsValueAndCalculatesTheSentenceWithFunLog2()
{
// 2 + cos(-123) + x
IExpression two = new Constant(2);
string function = "cos(-123)";
FunctionConverter f = new FunctionConverter();
IExpression value = new Constant(f.getValue(function));
IExpression mathFun = new MathFunction(f.Translator(function), value);
IExpression x = new VariableX();
IExpression result = new SumExpression(two, mathFun);
result = new SumExpression(result, x);
Context c = new Context(123);
var y = result.Interpret(c);
Assert.AreEqual(124.45, y, 2);
}
