public void ParseInstruction_Returns_Delegates_To_Next_Parser_When_Line_Does_Not_Start_With_Opening_Bracket()
{
// arrange
const string line = "BLORG)";
var nextParser = Substitute.For<IInstructionParser>();
var labelParser = Substitute.For<ISymbolParser>();
var parser = new LabelInstructionParser(nextParser, labelParser);
// act
parser.ParseInstruction(line);
// assert
nextParser.Received().ParseInstruction(Arg.Is(line));
}
public void ParseInstruction_Returns_LabelInstruction_When_Label_Is_Valid(string line, string expected)
{
// arrange
var nextParser = Substitute.For<IInstructionParser>();
var labelParser = Substitute.For<ISymbolParser>();
var parser = new LabelInstructionParser(nextParser, labelParser);
// act
IInstruction result = parser.ParseInstruction(line);
// assert
nextParser.DidNotReceive().ParseInstruction(Arg.Any<string>());
labelParser.Received().ParseLabel(Arg.Is(expected));
Assert.AreEqual(typeof(LabelInstruction), result.GetType());
}