evolve: add test to demonstrate issue6203 Current logic of content-divergence resolution contains a bug that if resolution parent is not the parent of any of the two divergent changesets, it could undo some changes. I think a good solution for this is to first relocate the divergent cset to it's obsolete parent's successor if applicable and then perform the content-divergence resolution. Next patch will fix the issue.

import hghave

@hghave.check("docgraph-ext", "Extension to generate graph from repository")
def docgraph():
    try:
        import hgext.docgraph
        hgext.docgraph.cmdtable # trigger import
    except ImportError:
        try:
            import hgext3rd.docgraph
            hgext3rd.docgraph.cmdtable # trigger import
        except ImportError:
            return False
    return True