Scenario Mapping from Sequence Diagrams

[Tehila1]

I use Sequence Diagrams to show how flows of Use Case are implemented.

I would like lean on the Sequence diagram to map the possible scenarios to an Excel sheet.
I mean: according to the conditions in the sequence diagram flow I will have an ordered list of possible scenarios and output. Such as:

if condition 1, 2 and 4 are met -> then the output is A
if only 2 and 4 are met -> then the output is B
if only condition 1 is met -> then the output is C
and so on...

Is there a built-in feature that performs this or something similar?
Thoughts?

reference : http://stackoverflow.com/questions/35576283/scenario-mapping-from-sequence-diagrams

[Geert Bellekens]

I don't think such a feature exists.

Geert

[TomO]

Structured Scenarios might give you what you are after.

With a structured scenario (which can be defined against any element, typically a Use Case) you provide each of the steps in a sequence and classify them as either Basic, Alternate or Exception. You can specify what each step uses, provide context references, what the result of each step is, any state information as well as constraints.

Each step can have a decision where the system will continue down the basic path or branch out into an alternate or exception path. Each of these paths can then rejoin the basic path at some point to continue down the basic path.

One of the features the structure scenarios has is to generate not only a diagram (Activity, Ruleflow, State, Sequence [which is where your sequence diagrams might come from in future] or Robustness) but also Test Cases and Test Suites.

This testing information gives you the outputs similar to what you described. For example the Basic path for an example model we have outputs:

Start:
1. System displays Welcome Screen
2. User inserts Card
3. System prompts for PIN
   Uses:   PIN specification
4. User enters correct PIN
5. System authenticates user and logs access time and location
6. System prompts: Withdraw Cash, Show Balance, Make Deposit
7. User selects: Show Balance
8. System displays current Account balance
9. System displays Welcome Screen after 3 seconds

Result:
Basic Path complete.
Use case ends.


It also generates test steps out for the other decisions - for example if they get the PIN incorrect:
Start:
1. System displays Welcome Screen
2. User inserts Card
3. System prompts for PIN
   Uses:   PIN specification

Alternate:
When [Incorrect PIN]
4a_1. User enters incorrect PIN
4a_2. System displays Authentication Error
4a_3. System displays Welcome Screen after 3 seconds

Result:
Incorrect PIN complete.
Rejoin at 1.

In this case, for this example, it generated 6 different test scenarios.

So although it is not Scenario Mapping from Sequence diagrams, it is Scenario Mapping from Structured Scenarios where you could use them to start your sequence diagrams too.

Hope this helps

TomO