I'm creating some sequence diagram and i want to detail my calls, but there is a class which call successively intern functions, would it be ok if i draw it this way:
If not how could i do ?
thanks !
No, that's syntactically simply wrong. You would use a Loop Fragment:
funcA is an internal call. Inside the two operations funcB and funcC will be called in a loop which is guarded by the condition some condition. This could as well be N times or whatever constraints the loop.
Related
I have created a sequence diagram and one of the objects will do a self function and inside of the function it will call the other class object function. How do i represent this correctly in a sequence diagram? My current diagram show it this way for now but i don't think its the right way to show it.
The self-call can be represented with an overlapping execution specification (rectangle). This allows to distinguish the call from the execution of the called function, and to visualize with accuracy what happens in the self-call, and what happens after the self-call returns:
I know that one use a box with "loop" in the corner, when we have a loop which uses several objects. Is it the same with just one object?
Yes. You can place a loop fragment over a self-call and that simply means a repetitive call. A guard placed in square brackets (top left of the fragment) tells when the loop will end.
However, graphical programming isn't the best idea at all. For such trivial cases some note or pseudo code are better suited. In most cases that info is obvious from the context anyway and should not be presented graphically. Don't underestimate the programmers doing the coding in the end.
I am trying creating a unit test for my multithreaded code.
My current code snippet is like this:
verify(someObject, times(2)).someMethod(captor.capture());
List<SomeObject> list = captor.getAllValues();
assertThat(list.get(0)).isEqualTo(...
assertThat(list.get(1)).isEqualTo(...
Now someMethod is called in two separate threads, so the order of captured arguments is nondeterministic. I was wondering if there was a way to assert these arguments without any particular order.
Of course I could write a custom Comparator and sort the list beforehand, but I was wondering if there was a simpler way than this.
Thanks!
Simply check that the list contains the elements, independently from the order:
assertThat(list, hasItem(...));
assertThat(list, hasItem(...));
Typically the calls on a Sequence Diagram are of the form
function(parameters);
How do I diagram chained function calls like this?:
stdList.front().pack(parameters);
front() returns an object of a different class so this is sort of like writing...
StdList stdList;
SomeClass a& = stdList.front();
a.pack(parameters);
Looks like a self-call. Have the method call loop back to the instance that called it.
I'm creating a sequence diagram, and one of the classes is being observed by another class. The observed class is calling update in the observer every 5 seconds in a loop. I need to show this in the sequence diagram. Is there a way to show it looping indefinitely out of sequence as it were?
Or does it not make sense in the context of a sequence diagram; should I not include it? Or should I include it in a different type of diagram?
You can use a box enclosing the message send arrow (and whatever else is inside the same repetitive construct).
See this tutorial for an example.
link to larger image (archived)
Just adding a clearer picture because this one at #joel.tony's answer is damn blur.
As you can see the loop happens inside the frame called loop n. There is a guard, array_size, which controls the loop's iterations.
In conclusion the sequence of the messages inside the loop n frame (those between DataControl and DataSource objects) will happen array_size times.