Fixing bug #2607 related to ModuleSpec syntax in RequiredModules #3594
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
This fixes issue #2607.
'RequiredModules' is a field in module manifest that can reference other modules using ModuleSpecification format.
The basic version of this format (just module name) was working fine, however there was a problem when more detailed version of the format was used (the one that uses module versions or/and GUIDs).
During module import, there is a check for cyclic references through 'RequiredModules' field. The bug was in this check for cyclic references , related to comparison rules for ModuleSpecification objects - as a result code was incorrectly reporting 'cyclic reference' error in cases when there was none.
Added tests for different ModuleSpecification formats and a test for error when there is actually a cyclic reference.
Test results before the fix:

Test results after the fix:
