public StandardCalculatorViewModel()
{
_calculator = new RTNCalculator();
_history = new History();
_memory = new Memory();
_input = string.Empty;
_expressionString = string.Empty;
_inputTemp = string.Empty;
_operatorTemp = string.Empty;
ResultCommand = new RelayCommand(GetResult);
CleenCommand = new RelayCommand(Cleen);
CleenEntryCommand = new RelayCommand(CleenEntry);
BackspaceCommand = new RelayCommand(Backspace);
TurnNumberCommand = new RelayCommand(TurnNumber);
ChangeSignCommand = new RelayCommand(ChangeSign);
TypeNumberCommand = new RelayCommand <string>(TypeNumber);
TypeOperatorCommand = new RelayCommand <string>(TypeOperator);
TypeUnaryFuncCommand = new RelayCommand <string>(TypeUnaryFunc);
ToDegreeByCommand = new RelayCommand <string>(ToDegreeBy);
CleanHistoryCommand = new RelayCommand(CleanHistory);
SaveToMemoryCommand = new RelayCommand(SaveToMemory);
RemoveFromMemoryCommand = new RelayCommand <string>(RemoveFromMemory);
MemoryRecallCommand = new RelayCommand(MemoryRecall);
MemoryAddCommand = new RelayCommand(MemoryAdd);
MemorySubstractCommand = new RelayCommand(MemorySubstract);
TypeBracketCommand = new RelayCommand <string>(TypeBracket);
}
public void When_sqrt_of_sum_of_2_and_2_return_2()
{
ICalculator calc = new RTNCalculator();
Assert.AreEqual(2, calc.Calculate("√ ( 2 + 2 )"));
}
public void When_few_included_sqrt_add_3_return_2()
{
ICalculator calc = new RTNCalculator();
Assert.AreEqual(5, calc.Calculate("√ ( √ ( 16 ) ) + 3"));
}
public void When_sqrt_of_single_number_4_return_2()
{
ICalculator calc = new RTNCalculator();
Assert.AreEqual(2, calc.Calculate("√ ( 4 )"));
}
public void When_sum_in_brackets_multiply_by_2_return_8()
{
ICalculator calc = new RTNCalculator();
Assert.AreEqual(8, calc.Calculate("( 2 + 2 ) * 2"));
}
public void When_add_2_to_2_in_brackets_return_4()
{
ICalculator calc = new RTNCalculator();
Assert.AreEqual(4, calc.Calculate("( 2 + 2 )"));
}
public void When_input_single_number_2_return_2()
{
ICalculator calc = new RTNCalculator();
Assert.AreEqual(2, calc.Calculate("2"));
}
public void When_add_2_to_2_and_multiply_to_2_return_6()
{
ICalculator calc = new RTNCalculator();
Assert.AreEqual(6, calc.Calculate("2 + 2 * 2"));
}
