public void Swap_SwapsNopWithJmp(string givenName, string expectedName)
{
var instruction = new [] { new Instruction(givenName, 0) };
var booter = new ConsoleBooter(instruction);
booter.SwapAt(0);
booter.CurrentInstruction.Name.Should().Be(expectedName);
}
public void IsTerminated_AfterNext_WhenLast_Returns_True()
{
var instructions = new[] { new Instruction(Increment, 0) };
var booter = new ConsoleBooter(instructions);
booter.NextInstruction();
var isTerminated = booter.IsTerminated;
isTerminated.Should().BeTrue();
}
public void Next_When_NoOperation_MovesForward(int instructionsCount, int expectedNextInstructionIndex)
{
var instructions = new Instruction[instructionsCount];
instructions[0] = new Instruction(Ignore, 99);
var consoleBooter = new ConsoleBooter(instructions);
var expectedNextInstruction = instructions[expectedNextInstructionIndex];
consoleBooter.NextInstruction();
consoleBooter.CurrentInstruction.Should().BeEquivalentTo(expectedNextInstruction);
}
public void Jump_JumpsToExpectedInstruction(int jumpBy, int instructionsCount, int expectedNextInstructionIndex)
{
var instructions = new Instruction[instructionsCount];
instructions[0] = new Instruction(Jump, jumpBy);
var expectedNextInstruction = instructions[expectedNextInstructionIndex];
var consoleBooter = new ConsoleBooter(instructions);
consoleBooter.NextInstruction();
consoleBooter.CurrentInstruction.Should().BeEquivalentTo(expectedNextInstruction);
}
public void Accumulate_MovesForward_And_Increments_Accumulator(int instructionsCount, int expectedNextInstructionIndex, int initialAccumulator, int increment, int expectedAccumulator)
{
var instructions = new Instruction[instructionsCount];
instructions[0] = new Instruction(Increment, increment);
var consoleBooter = new ConsoleBooter(instructions, initialAccumulator);
var expectedNextInstruction = instructions[expectedNextInstructionIndex];
consoleBooter.NextInstruction();
using (new AssertionScope())
{
consoleBooter.CurrentInstruction.Should().BeEquivalentTo(expectedNextInstruction);
consoleBooter.Accumulator.Should().Be(expectedAccumulator);
}
}
public void Reset_SetsAllIsVisitedToFalse_And_ResetsAmendedInstruction_And_SetsCurrentInstructionTo0_AndSetsAccumulatorTo0()
{
var instructionsOriginal = new [] { new Instruction(Increment, 1), new Instruction(Ignore, 1), };
var booter = new ConsoleBooter(instructionsOriginal);
booter.NextInstruction();
booter.SwapAt(1);
booter.Reset();
using (new AssertionScope())
{
booter.Accumulator.Should().Be(0);
booter.CurrentInstruction.IsVisited.Should().BeFalse();
booter.CurrentInstruction.Name.Should().Be(instructionsOriginal[0].Name);
booter.NextInstruction();
booter.CurrentInstruction.Name.Should().Be(instructionsOriginal[1].Name);
}
}
