public void GetLastActSymIndex_WhenExpressionIsNull_ReturnMinusOne(string expression)
{
//Arrange
var calc = new CalculateExpression();
//Action
var reternedIndex = calc.GetStartIndexOfLastNumber(expression);
//Assert
Assert.AreEqual(-1, reternedIndex);
}
public void GetLastActSymIndex_WhenActionSymbolExist_ReturnRightIndex(string expression, int index)
{
//Arrange
var calc = new CalculateExpression();
//Action
var reternedIndex = calc.GetStartIndexOfLastNumber(expression);
//Assert
Assert.AreEqual(index, reternedIndex);
}