public void ParseInstruction_Returns_Delegates_To_Next_Parser_When_Line_Does_Not_Start_With_At_Symbol()
{
// arrange
const string line = "somevar";
var nextParser = Substitute.For<IInstructionParser>();
var labelParser = Substitute.For<ISymbolParser>();
var parser = new VariableInstructionParser(nextParser, labelParser);
// act
parser.ParseInstruction(line);
// assert
nextParser.Received().ParseInstruction(Arg.Is(line));
}
public void ParseInstruction_Returns_VariableInstruction_When_Label_Is_Valid()
{
// arrange
const string line = "@somevar";
var nextParser = Substitute.For<IInstructionParser>();
var labelParser = Substitute.For<ISymbolParser>();
var parser = new VariableInstructionParser(nextParser, labelParser);
// act
IInstruction result = parser.ParseInstruction(line);
// assert
nextParser.DidNotReceive().ParseInstruction(Arg.Any<string>());
labelParser.Received().ParseLabel(Arg.Is("somevar"));
Assert.AreEqual(typeof(VariableInstruction), result.GetType());
}