public void TestReturnNullEmptyCalculation()
{
//arrange
var calc = new PolishCalculate(new Token[] { });
//act
float result = calc.Calculate();
}
public void CalaculateTest()
{
var str = "5 * ((1 * 2) * 4) - 3";
var expected = 14;
var actual = PolishCalculate.Calaculate(str);
Assert.AreEqual(expected, actual);
}
public void TestReturnNullNotEnoughNumerics()
{
//arrange
var calc = new PolishCalculate(new Token[] { new NumericToken(1), new OperatorToken('+') });
//act
float result = calc.Calculate();
//assert
calc.Should().BeNull();
}
public void TestDivByZeroCalculation()
{
//arrange
bool flag = true;
var calc = new PolishCalculate(new Token[] { new NumericToken(14), new NumericToken(0), new OperatorToken('/') });
//act
float result = calc.Calculate();
//assert
flag.Should().Be(float.IsInfinity(result));
}
public void TestDivCalculation()
{
//arrange
float expected = 3;
var calc = new PolishCalculate(new Token[] { new NumericToken(21), new NumericToken(7), new OperatorToken('/') });
//act
float result = calc.Calculate();
//assert
expected.Should().Be(result);
}
public void TestComplexCalculation()
{
//arrange
float expected = 0.5f;
var calc = new PolishCalculate(new Token[] { new NumericToken(4), new NumericToken(3), new NumericToken(11), new NumericToken(22), new OperatorToken('/'), new OperatorToken('+'), new OperatorToken('-') });
//act
float result = calc.Calculate();
//assert
expected.Should().Be(result);
}
public void TestNegativeParameterAndResoult()
{
//arrange
float expected = -4;
var calc = new PolishCalculate(new Token[] { new NumericToken(-14), new NumericToken(3.5f), new OperatorToken('/') });
//act
float result = calc.Calculate();
//assert
expected.Should().Be(result);
}
public void TestReturnsToTopIfOnlyNumbers()
{
//arrange
float expected = 1;
var calc = new PolishCalculate(new Token[] { new NumericToken(6), new NumericToken(5), new NumericToken(1) });
//act
float result = calc.Calculate();
//assert
expected.Should().Be(result);
}
public void TestFloatResoult()
{
//arrange
float expected = 2.5f;
var calc = new PolishCalculate(new Token[] { new NumericToken(10), new NumericToken(4), new OperatorToken('/') });
//act
float result = calc.Calculate();
//assert
expected.Should().Be(result);
}
