public void InterpreterReturnsWhenExecutorReturnsTrue()
{
SetupSut();
_mockTeletype.Input.Enqueue("SYSTEM");
_sut.Execute();
}
public void InterpreterHandlesSyntaxErrorForDataRead()
{
SetupSut();
var line20 = new ProgramLine(20, new List <IToken> {
new Token("A")
});
var runLine = new ProgramLine(null, new List <IToken> {
new Token("A")
});
IRunEnvironment runEnvironment = new RunEnvironment();
_sut = new Interpreter(
new TeletypeWithPosition(_mockTeletype),
_mockTokeniser.Object,
runEnvironment,
_mockProgramRepository.Object,
_mockExecutor.Object);
_mockTeletype.Input.Enqueue("20 PRINT");
_mockTeletype.Input.Enqueue("RUN");
_mockTeletype.Input.Enqueue("SYSTEM");
_mockTokeniser.Setup(mt => mt.Tokenise("20 PRINT")).Returns(line20);
_mockTokeniser.Setup(mt => mt.Tokenise("RUN")).Returns(runLine);
var syntaxException = new ClassicBasic.Interpreter.Exceptions.SyntaxErrorException();
_mockExecutor.SetupSequence(me => me.ExecuteLine())
.Throws(syntaxException)
.Returns(true);
runEnvironment.CurrentLine = line20;
runEnvironment.DataErrorLine = 40;
_sut.Execute();
// Input of line 20
CheckForPrompt();
// Run
CheckForPrompt();
CheckForError("?" + syntaxException.ErrorMessage + " ERROR IN 40");
// Prompt after STOP
CheckForPrompt();
// Nothing left
Assert.AreEqual(0, _mockTeletype.Output.Count);
}
// (xt -- )
private int ExecuteAction()
{
_interpreter.StackExpect(1);
return(_interpreter.Execute(_interpreter.State.WordsList.Get(_interpreter.Pop())));
}