public void MathProcessor_returns_one_number()
{
var mathProcessor = new MathProcessor();
var inputExpression = new List <ExpressionUnit>()
{
new NumberExpressionUnit("2.00")
};
var result = mathProcessor.Process(inputExpression, _mathOperationsContainer);
Assert.Equal(2.00, result);
}
public void MathProcessor_returns_result_of_digit_with_comma()
{
var mathProcessor = new MathProcessor();
var inputExpression = new List <ExpressionUnit>()
{
new NumberExpressionUnit("23,50", "23.50")
};
var result = mathProcessor.Process(inputExpression, _mathOperationsContainer);
Assert.Equal(23.50, result);
}
public void MathProcessor_returns_result_of_digit_with_unary_minus()
{
var mathProcessor = new MathProcessor();
var inputExpression = new List <ExpressionUnit>()
{
new NumberExpressionUnit("8.00"),
new OperationExpressionUnit("-", "~")
};
var result = mathProcessor.Process(inputExpression, _mathOperationsContainer);
Assert.Equal(-8.00, result);
}
public void MathProcessor_returns_result_of_div_operation()
{
var mathProcessor = new MathProcessor();
var inputExpression = new List <ExpressionUnit>()
{
new NumberExpressionUnit("6.00"),
new NumberExpressionUnit("2.00"),
new OperationExpressionUnit("/")
};
var result = mathProcessor.Process(inputExpression, _mathOperationsContainer);
Assert.Equal(3.00, result);
}
public void MathProcessor_returns_result_of_add_operation()
{
var mathProcessor = new MathProcessor();
var inputExpression = new List <ExpressionUnit>()
{
new NumberExpressionUnit("2.50"),
new NumberExpressionUnit("3.25"),
new OperationExpressionUnit("+")
};
var result = mathProcessor.Process(inputExpression, _mathOperationsContainer);
Assert.Equal(5.75, result);
}
public void MathProcessor_should_throw_custom_exception_for_unsupported_operation()
{
var mathProcessor = new MathProcessor();
var inputExpression = new List <ExpressionUnit>()
{
new NumberExpressionUnit("3.00"),
new NumberExpressionUnit("2.00"),
new OperationExpressionUnit("$")
};
Action action = () => mathProcessor.Process(inputExpression, _mathOperationsContainer);
var exception = Assert.Throws <ArgumentException>(action);
Assert.Equal("Invalid mathematical expression or unsupported operation.", exception.Message);
}
public void MathProcessor_returns_divide_by_zero_exception()
{
var mathProcessor = new MathProcessor();
var inputExpression = new List <ExpressionUnit>()
{
new NumberExpressionUnit("3.00"),
new NumberExpressionUnit("0.00"),
new OperationExpressionUnit("/")
};
Action action = () => mathProcessor.Process(inputExpression, _mathOperationsContainer);
var exception = Assert.Throws <DivideByZeroException>(action);
Assert.Equal("You cannot divide by zero.", exception.Message);
}