view tests/hghaveaddon.py @ 4044:c0fbe70f2e48

topic: check that repo.currenttopic is set before using it as an argument

repo.currenttopic can be an empty string, which means there's no current topic
set. This fact can be used to short-circuit some checks.

Also, this avoids passing an empty string as an argument to topic() revset.

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