fix: no outgoing from task

[abdul99ahad]

Closes #45

Proposed Changes

• Task without outgoing sequence flow can exist.

Checklist

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• Brief textual description of the changes present
• Visual demo attached
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• Related issue linked via Closes {LINK_TO_ISSUE} or Related to {LINK_TO_ISSUE}

[nikku]

Null object pattern, again:

Suggested change

	.map(att => (att.outgoing ? att.outgoing.reverse() : []))
	.map(attacher => (attacher.outgoing || []).reverse())

[nikku]

The test case could be slightly "less verbose", but hey, it works as an integration test (checking many more things than needed for this example) now.

Do we actually use the tests and try to generate (and verify the generation succeeds)?

[abdul99ahad]

The test case could be slightly "less verbose", but hey, it works as an integration test (checking many more things than needed for this example) now.

Agreed.

Do we actually use the tests and try to generate (and verify the generation succeeds)?

Do you mean generating bpmn file from layout XML? We can also add test cases to generate the file.