public void ExecuteDrawingInstruction_PassNull()
{
var stroke = new SerializableStroke(_attributes, _points);
var instruction = new DrawInstruction(stroke);
Assert.Throws <ArgumentNullException>(() => instruction.ExecuteDrawingInstruction(null));
}
public void ExecuteDrawingInstruction()
{
var repositoryMock = new Mock <IDrawingInstructionRepository>();
var stroke = new SerializableStroke(_attributes, _points);
var instruction = new DrawInstruction(stroke);
instruction.ExecuteDrawingInstruction(repositoryMock.Object);
repositoryMock.Verify(instructionRepository => instructionRepository.Draw(instruction), Times.Once);
}