view tests/hghaveaddon.py @ 5203:034d6d0efa7d

topic: fix compatibility issues caused because of change in transaction API

In 36f08ae87ef687be53a59bd87376bcfbe4479205 in core mercurial, `_validator`
attribute to transaction class was removed and a dict was introduced. It added a
`addvalidator()` function to transaction class which can be used to register
multiple validator callbacks.

This updates the code to use `addvalidator()` when `_validator` attribute is not
present.

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