tests: add tests of content+parent change creating phase-divergence
This patch adds tests which shows handling of phase divergence cases by `hg
evolve` command which involved content+parent change. The conflicts case is not
handled and will be fixed in upcoming patches.
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