static void Main(string[] args)
{
var rpnEngine = new RpnEngine();
var log = new Logger(eLogLevel.Debug);
while (true)
{
try
{
Console.WriteLine("Please enter a valid RPN string to be calculated:");
var input = Console.ReadLine();
rpnEngine.CalculateRpn(input);
Console.WriteLine("Another? (y/n)");
var response = Console.ReadLine();
if (response == "n" || response == "N")
{
break;
}
}
catch (Exception ex)
{
var message = $"Caught exception running. Message was {ex.Message}. Don't do that!";
log.Fatal(message);
Console.WriteLine(message);
}
}
}
public void rpn_add_test()
{
var input = "12 + 12";
var fakeLog = A.Fake <Logger>();
var fakeCalc = A.Fake <Calculator>();
var testRPN = new RpnEngine(fakeLog, fakeCalc);
testRPN.CalculateRpn(input);
A.CallTo(() => fakeCalc.Add(12, 12)).MustHaveHappened();
}
public void rpn_exp_test()
{
var input = "10 ^ 5";
var fakeLog = A.Fake <Logger>();
var fakeCalc = A.Fake <Calculator>();
var testRPN = new RpnEngine(fakeLog, fakeCalc);
testRPN.CalculateRpn(input);
A.CallTo(() => fakeCalc.Power(10, 5)).MustHaveHappened();
}
public void RpnEngine_Calls_Logger_Debug()
{
Calculator calc = A.Fake <Calculator>();
Logger log = A.Fake <Logger>();
RpnEngine myRpnEngine = new RpnEngine(calc, log);
string input = "2 2 +";
myRpnEngine.CalculateRpn(input);
A.CallTo(() => log.Debug("2")).MustHaveHappened();
}
public void RpnEngine_BadInput_Exception()
{
Calculator calc = A.Fake <Calculator>();
Logger log = A.Fake <Logger>();
RpnEngine myRpnEngine = new RpnEngine(calc, log);
string input = "3 4 applesauce";
Action act = () => myRpnEngine.CalculateRpn(input);
act.Should().Throw <ArgumentException>();
}
public void RpnEngine_ValidRpnOperation_Failure()
{
var rpnEngine = new RpnEngine();
var input = " 1 ! t < _";
var rpnOperators = input.Split(' ');
foreach (var rpnOperation in rpnOperators)
{
var isValidOperation = rpnEngine.ValidRpnOperation(rpnOperation);
isValidOperation.Should().BeFalse("Because these are not valid rpn operations.");
}
}
public void RpnEngine_ValidRpnOperation_Success()
{
var rpnEngine = new RpnEngine();
var input = "^ * - / +";
var rpnOperators = input.Split(' ');
foreach (var rpnOperation in rpnOperators)
{
var isValidOperation = rpnEngine.ValidRpnOperation(rpnOperation);
isValidOperation.Should().BeTrue("Because these are all valid rpn operations.");
}
}
public void RpnEngine_TryParseRpnToken_Failure()
{
var rpnEngine = new RpnEngine();
var input = "* * *";
var rpnTokens = input.Split(' ');
foreach (var rpnToken in rpnTokens)
{
var isDecimal = rpnEngine.TryParseDecimal(rpnToken);
isDecimal.Should().BeFalse("It's set to false");
}
}
public void RpnEngine_TryParseRpnToken_Success()
{
var rpnEngine = new RpnEngine();
var input = "3 5";
var rpnTokens = input.Split(' ');
foreach (var rpnToken in rpnTokens)
{
var isDecimal = rpnEngine.TryParseDecimal(rpnToken);
isDecimal.Should().BeTrue("It's set to true");
}
}
public void RpnEngine_BadInput_Logger_Fatal()
{
Calculator calc = A.Fake <Calculator>();
Logger log = A.Fake <Logger>();
RpnEngine myRpnEngine = new RpnEngine(calc, log);
string input = "3 4 applesauce";
try
{
myRpnEngine.CalculateRpn(input);
}
catch (Exception e)
{
A.CallTo(() => log.Fatal($"Could not parse [applesauce]")).MustHaveHappened();
}
}
public void RpnEngine_SplitInput_Success()
{
var rpnEngine = new RpnEngine();
var input = "3 5 +";
string[] inputArray = new string[3];
inputArray[0] = "3";
inputArray[1] = "5";
inputArray[2] = "+";
var rpnTokens = rpnEngine.SplitInput(input);
int count = rpnTokens.Length;
rpnTokens.Should().Equal(inputArray, "Because these should be equal");
}
public void RpnEngine_Power_Success()
{
Calculator calc = A.Fake <Calculator>();
Logger log = A.Fake <Logger>();
RpnEngine myRpnEngine = new RpnEngine(calc, log);
string input = "3 3 ^";
var output = new StringWriter();
Console.SetOut(output);
myRpnEngine.CalculateRpn(input);
var stdout = new StreamWriter(Console.OpenStandardOutput());
stdout.AutoFlush = true;
Console.SetOut(stdout);
output.ToString().Should().Be("27\r\n", "Because power...");
}
public void RpnEngine_CalculateLoop_Failure(params string[] operation)
{
var rpnEngine = new RpnEngine();
var _stack = new Stack <decimal>();
var expectedValue = decimal.Parse(operation[3]);
string[] rpnTokens = new string[3];
for (int i = 0; i < 3; ++i)
{
rpnTokens[i] = operation[i];
}
Action calculation = () => rpnEngine.CalculateLoop(rpnTokens, _stack);
calculation.Should().Throw <ArgumentException>();
}
public void RpnEngine_CalculateLoop_Success(params string[] operation)
{
var rpnEngine = new RpnEngine();
var _stack = new Stack <decimal>();
var expectedValue = decimal.Parse(operation[3]);
string[] rpnTokens = new string[3];
for (int i = 0; i < 3; ++i)
{
rpnTokens[i] = operation[i];
}
var calculation = rpnEngine.CalculateLoop(rpnTokens, _stack);
calculation.Should().Be(expectedValue);
}