public void ParseInstruction_Returns_Delegates_To_Next_Parser_When_Address_Is_Not_Integer()
{
// arrange
const string line = "@blorg";
var nextParser = Substitute.For<IInstructionParser>();
var parser = new AddressInstructionParser(nextParser);
// act
parser.ParseInstruction(line);
// assert
nextParser.Received().ParseInstruction(Arg.Is(line));
}
public void ParseInstruction_Returns_Delegates_To_Next_Parser_When_Line_Does_Not_Start_With_At_Symbol()
{
// arrange
const string line = "12345";
var nextParser = Substitute.For<IInstructionParser>();
var parser = new AddressInstructionParser(nextParser);
// act
parser.ParseInstruction(line);
// assert
nextParser.Received().ParseInstruction(Arg.Is(line));
}
public void ParseInstruction_Returns_AddressInstruction_When_Address_Is_Valid()
{
// arrange
const string line = "@1234";
var nextParser = Substitute.For<IInstructionParser>();
var parser = new AddressInstructionParser(nextParser);
// act
IInstruction result = parser.ParseInstruction(line);
// assert
nextParser.DidNotReceive().ParseInstruction(Arg.Any<string>());
Assert.AreEqual(1234, ((AddressInstruction)result).Address);
}