public void KeyNotFoundException()
{
var calculator = new Calculator();
decimal a = 18;
decimal b = 21;
string oper = "f";
Assert.ThrowsException <KeyNotFoundException>(() => calculator.Calc(a, b, oper));
}
public void OutPut()
{
var calculator = new Calculator();
string input = "4.8 + 2.8";
decimal result = calculator.Calc(input);
decimal expected = 7.6m;
Assert.AreEqual(expected, result);
}
public void DivideByZeroException()
{
var calculator = new Calculator();
decimal a = 20;
decimal b = 0;
string oper = "/";
Assert.ThrowsException <DivideByZeroException>(() => calculator.Calc(a, b, oper));
}
public void Multiply_6dot3multiply6dot3_39dot69Returned()
{
var calculator = new Calculator();
var a = 6.3m;
var b = 6.3m;
var oper = "*";
var expected = 39.69m;
var result = calculator.Calc(a, b, oper);
Assert.AreEqual(expected, result);
}
public void Minus_17dot4minus5dot5_11dot9Returned()
{
var calculator = new Calculator();
decimal a = 17.4m;
decimal b = 5.5m;
string oper = "-";
decimal expected = 11.9m;
decimal result = calculator.Calc(a, b, oper);
Assert.AreEqual(expected, result);
}
public void Plus_2plus2dot4_4dot4Returned()
{
var calculator = new Calculator();
decimal a = 2;
decimal b = 2.4m;
string oper = "+";
decimal expected = 4.4m;
decimal result = calculator.Calc(a, b, oper);
Assert.AreEqual(expected, result);
}
public void Devide_20devide5dot5_3dot6363Returned()
{
var calculator = new Calculator();
decimal a = 20;
decimal b = 5.5m;
string oper = "/";
double delta = 0.0001;
double expected = 3.6363;
decimal result = calculator.Calc(a, b, oper);
double actual = (double)result;
Assert.AreEqual(expected, actual, delta);
}