public void ChangesDirectionIfBlocked()
{
// Arrange
var gnomeMovement = MockRepository.GenerateMock <IGnomeMovement>();
var gnome = new Gnome(1, 1, 1, gnomeMovement);
gnomeMovement.Stub(x => x.IsFrozen(gnome)).Return(false);
Direction?firstDirectionChosen = null;
var firstDirectionCount = 0;
var otherDirectionCount = 0;
gnomeMovement.Stub(x => x.TryMove(Arg <Gnome> .Is.Anything, Arg <Direction> .Is.Equal(Direction.North)))
.Do((Func <IGnome, Direction, bool>)((g, d) => CheckDifferentDirection(d, ref firstDirectionChosen, ref firstDirectionCount, ref otherDirectionCount)));
gnomeMovement.Stub(x => x.TryMove(Arg <Gnome> .Is.Anything, Arg <Direction> .Is.Equal(Direction.East)))
.Do((Func <IGnome, Direction, bool>)((g, d) => CheckDifferentDirection(d, ref firstDirectionChosen, ref firstDirectionCount, ref otherDirectionCount)));
gnomeMovement.Stub(x => x.TryMove(Arg <Gnome> .Is.Anything, Arg <Direction> .Is.Equal(Direction.South)))
.Do((Func <IGnome, Direction, bool>)((g, d) => CheckDifferentDirection(d, ref firstDirectionChosen, ref firstDirectionCount, ref otherDirectionCount)));
gnomeMovement.Stub(x => x.TryMove(Arg <Gnome> .Is.Anything, Arg <Direction> .Is.Equal(Direction.West)))
.Do((Func <IGnome, Direction, bool>)((g, d) => CheckDifferentDirection(d, ref firstDirectionChosen, ref firstDirectionCount, ref otherDirectionCount)));
// Act
gnome.Move();
gnome.Move();
// Assert
Assert.AreEqual(1, firstDirectionCount);
Assert.AreEqual(1, otherDirectionCount);
}
public void InitiallyMovesInRandomDirection()
{
// Arrange
const int timesRun = 10000;
var gnomeMovement = MockRepository.GenerateMock <IGnomeMovement>();
gnomeMovement.Stub(x => x.IsFrozen(Arg <Gnome> .Is.Anything)).Return(false);
var northCount = 0;
var eastCount = 0;
var southCount = 0;
var westCount = 0;
gnomeMovement.Stub(x => x.TryMove(Arg <Gnome> .Is.Anything, Arg <Direction> .Is.Equal(Direction.North)))
.Do((Func <IGnome, Direction, bool>)((g, d) => {
northCount++;
return(true);
}));
gnomeMovement.Stub(x => x.TryMove(Arg <Gnome> .Is.Anything, Arg <Direction> .Is.Equal(Direction.East)))
.Do((Func <IGnome, Direction, bool>)((g, d) => {
eastCount++;
return(true);
}));
gnomeMovement.Stub(x => x.TryMove(Arg <Gnome> .Is.Anything, Arg <Direction> .Is.Equal(Direction.South)))
.Do((Func <IGnome, Direction, bool>)((g, d) => {
southCount++;
return(true);
}));
gnomeMovement.Stub(x => x.TryMove(Arg <Gnome> .Is.Anything, Arg <Direction> .Is.Equal(Direction.West)))
.Do((Func <IGnome, Direction, bool>)((g, d) => {
westCount++;
return(true);
}));
// Act
for (var i = 0; i < timesRun; i++)
{
var gnome = new Gnome(1, 1, 1, gnomeMovement);
gnome.Move();
}
// Assert
var lowerLimit = 2000;
var upperLimit = 3000;
Assert.AreEqual(timesRun, northCount + eastCount + southCount + westCount);
Assert.AreEqual(true, northCount > lowerLimit && northCount < upperLimit);
Assert.AreEqual(true, eastCount > lowerLimit && eastCount < upperLimit);
Assert.AreEqual(true, southCount > lowerLimit && southCount < upperLimit);
Assert.AreEqual(true, westCount > lowerLimit && westCount < upperLimit);
}
public void DoesntMoveIfFrozen()
{
// Arrange
var gnomeMovement = MockRepository.GenerateMock <IGnomeMovement>();
var gnome = new Gnome(1, 1, 1, gnomeMovement);
gnomeMovement.Stub(x => x.IsFrozen(gnome)).Return(true);
// Act
gnome.Move();
// Assert
gnomeMovement.AssertWasNotCalled(x => x.TryMove(Arg <Gnome> .Is.Equal(gnome), Arg <Direction> .Is.Anything));
}