public void RunShouldPrintCharCorrectly()
{
var runner = new BrainfuckRunner(_memoryMock, ".", _readFunc, _writeAction);
runner.Run();
A.CallTo(() => _writeAction('\0')).MustHaveHappened(Repeated.Exactly.Once);
}
public void RunShouldHandleSimpleLoopCorrectly()
{
const string program = "+++[-].";
var runner = new BrainfuckRunner(_memoryMock, program, _readFunc, _writeAction);
runner.Run();
A.CallTo(() => _writeAction('\0')).MustHaveHappened(Repeated.Exactly.Once);
}
public void RunShouldMoveRightCorrectly()
{
var program = new string('>', 2);
var runner = new BrainfuckRunner(_memoryMock, program, _readFunc, _writeAction);
runner.Run();
A.CallTo(() => _memoryMock.MoveRight()).MustHaveHappened(Repeated.Exactly.Twice);
}
public void RunShouldDecrementCorrectly()
{
var program = new string('-', 191);
var runner = new BrainfuckRunner(_memoryMock, program, _readFunc, _writeAction);
runner.Run();
A.CallTo(() => _memoryMock.Decrement()).MustHaveHappened(Repeated.Exactly.Times(191));
}
public void RunShouldReadCharCorrectly()
{
const string program = ",";
var runner = new BrainfuckRunner(_memoryMock, program, _readFunc, _writeAction);
A.CallTo(() => _readFunc()).Returns('A');
runner.Run();
A.CallTo(() => _readFunc()).MustHaveHappened(Repeated.Exactly.Once);
A.CallTo(_memoryMock)
.Where(call => call.Method.Name == "set_CurrentValue" && call.Arguments.Get <byte>(0) == 'A')
.MustHaveHappened(Repeated.Exactly.Once);
}
public void RunShouldHandleInnerLoopsCorrectly(string program)
{
var currentPosition = 0;
var array = new byte[30000];
A.CallTo(() => _memoryMock.Increment()).Invokes(() => ++ array[currentPosition]);
A.CallTo(() => _memoryMock.CurrentValue).ReturnsLazily(() => array[currentPosition]);
A.CallTo(() => _memoryMock.MoveRight()).Invokes(() => currentPosition = (currentPosition + 1) % 3000);
var runner = new BrainfuckRunner(_memoryMock, program, _readFunc, _writeAction);
runner.Run();
Assert.AreEqual(0, _memoryMock.CurrentValue);
}
public void RunShouldThrowExceptionForInvalidOperation()
{
var runner = new BrainfuckRunner(_memoryMock, "%", _readFunc, _writeAction);
Assert.Throws <ArgumentException>(() => runner.Run());
}
public void RunShouldThrowExceptionForUnmatchedOpeningBracket()
{
// ReSharper disable once UnusedVariable
var runner = new BrainfuckRunner(_memoryMock, "[+++", _readFunc, _writeAction);
}
