public void VisitComputeInstruction_Delegates_To_ComputeInstructionAssembler()
{
// arrange
var computeAssembler = Substitute.For<IInstructionAssembler<ComputeInstruction>>();
var addressAssembler = Substitute.For<IInstructionAssembler<AddressInstruction>>();
IInstructionVisitor<string[]> visitor = new AssemblyInstructionVisitor(computeAssembler, addressAssembler);
var instruction = new ComputeInstruction(ComputeDestinationType.Memory, "A-D", ComputeJumpType.JMP);
// act
visitor.VisitInstruction(instruction);
// assert
computeAssembler.Received().AssembleInstruction(Arg.Is(instruction));
}
public void VisitLabelInstruction_Throws_NotSupportedException()
{
// arrange
var computeAssembler = Substitute.For<IInstructionAssembler<ComputeInstruction>>();
var addressAssembler = Substitute.For<IInstructionAssembler<AddressInstruction>>();
IInstructionVisitor<string[]> visitor = new AssemblyInstructionVisitor(computeAssembler, addressAssembler);
var instruction = new LabelInstruction("SOME_LABEL");
// act
TestDelegate testDelegate = () => visitor.VisitInstruction(instruction);
// assert
Assert.Throws<NotSupportedException>(testDelegate);
}
public void VisitAddressInstruction_Delegates_To_AddressInstructionAssembler()
{
// arrange
var computeAssembler = Substitute.For<IInstructionAssembler<ComputeInstruction>>();
var addressAssembler = Substitute.For<IInstructionAssembler<AddressInstruction>>();
IInstructionVisitor<string[]> visitor = new AssemblyInstructionVisitor(computeAssembler, addressAssembler);
var instruction = new AddressInstruction(1234);
// act
visitor.VisitInstruction(instruction);
// assert
addressAssembler.Received().AssembleInstruction(Arg.Is(instruction));
}
public void VisitVariableInstruction_Throws_NotSupportedException()
{
// arrange
var computeAssembler = Substitute.For <IInstructionAssembler <ComputeInstruction> >();
var addressAssembler = Substitute.For <IInstructionAssembler <AddressInstruction> >();
IInstructionVisitor <string[]> visitor = new AssemblyInstructionVisitor(computeAssembler, addressAssembler);
var instruction = new VariableInstruction("some.value");
// act
TestDelegate testDelegate = () => visitor.VisitInstruction(instruction);
// assert
Assert.Throws <NotSupportedException>(testDelegate);
}
public void VisitComputeInstruction_Delegates_To_ComputeInstructionAssembler()
{
// arrange
var computeAssembler = Substitute.For <IInstructionAssembler <ComputeInstruction> >();
var addressAssembler = Substitute.For <IInstructionAssembler <AddressInstruction> >();
IInstructionVisitor <string[]> visitor = new AssemblyInstructionVisitor(computeAssembler, addressAssembler);
var instruction = new ComputeInstruction(ComputeDestinationType.Memory, "A-D", ComputeJumpType.JMP);
// act
visitor.VisitInstruction(instruction);
// assert
computeAssembler.Received().AssembleInstruction(Arg.Is(instruction));
}
[Test] //TODO get rid of these useless tests
public void VisitAddressInstruction_Delegates_To_AddressInstructionAssembler()
{
// arrange
var computeAssembler = Substitute.For <IInstructionAssembler <ComputeInstruction> >();
var addressAssembler = Substitute.For <IInstructionAssembler <AddressInstruction> >();
IInstructionVisitor <string[]> visitor = new AssemblyInstructionVisitor(computeAssembler, addressAssembler);
var instruction = new AddressInstruction(1234);
// act
visitor.VisitInstruction(instruction);
// assert
addressAssembler.Received().AssembleInstruction(Arg.Is(instruction));
}
public void VisitUnknownInstruction_Always_Returns_Error_Text()
{
// arrange
var computeAssembler = Substitute.For<IInstructionAssembler<ComputeInstruction>>();
var addressAssembler = Substitute.For<IInstructionAssembler<AddressInstruction>>();
IInstructionVisitor<string[]> visitor = new AssemblyInstructionVisitor(computeAssembler, addressAssembler);
const string inputLine = "MORE CLASH!";
var instruction = new UnknownInstruction(inputLine);
// act
string[] result = visitor.VisitInstruction(instruction);
// assert
Assert.AreEqual(1, result.Length);
Assert.IsTrue(result[0].Contains("Error"));
Assert.IsTrue(result[0].Contains(inputLine));
}
public void VisitUnknownInstruction_Always_Returns_Error_Text()
{
// arrange
var computeAssembler = Substitute.For <IInstructionAssembler <ComputeInstruction> >();
var addressAssembler = Substitute.For <IInstructionAssembler <AddressInstruction> >();
IInstructionVisitor <string[]> visitor = new AssemblyInstructionVisitor(computeAssembler, addressAssembler);
const string inputLine = "MORE CLASH!";
var instruction = new UnknownInstruction(inputLine);
// act
string[] result = visitor.VisitInstruction(instruction);
// assert
Assert.AreEqual(1, result.Length);
Assert.IsTrue(result[0].Contains("Error"));
Assert.IsTrue(result[0].Contains(inputLine));
}