tests/test-check-py3-compat.t

mergecopies: invoke _computenonoverlap for both base and tca during merges

The algorithm of _checkcopies can only walk backwards in the DAG, never
forward. Because of this, the two _checkcopies patches need to run from
their respective endpoints to the TCA to cover the entire subgraph where
the merge is being performed. However, detection of files new in both
endpoints, as well as directory rename detection, need to run with respect
to the merge base, so we need lists of new files both from the TCA's and
the merge base's viewpoint to correctly detect renames in a graft-like
merge scenario.

(Series reworked by Pierre-Yves David)

#require test-repo

  $ . "$TESTDIR/helpers-testrepo.sh"
  $ cd "$TESTDIR"/..

  $ hg files 'set:(**.py)' | sed 's|\\|/|g' | xargs python contrib/check-py3-compat.py
  hgext/fsmonitor/pywatchman/__init__.py not using absolute_import
  hgext/fsmonitor/pywatchman/__init__.py requires print_function
  hgext/fsmonitor/pywatchman/capabilities.py not using absolute_import
  hgext/fsmonitor/pywatchman/pybser.py not using absolute_import
  i18n/check-translation.py not using absolute_import
  setup.py not using absolute_import
  tests/test-demandimport.py not using absolute_import

#if py3exe
  $ hg files 'set:(**.py) - grep(pygments)' | sed 's|\\|/|g' \
  > | xargs $PYTHON3 contrib/check-py3-compat.py \
  > | sed 's/[0-9][0-9]*)$/*)/'
  hgext/convert/transport.py: error importing: <ImportError> No module named 'svn.client' (error at transport.py:*)
  hgext/fsmonitor/pywatchman/capabilities.py: error importing: <ImportError> No module named 'pybser' (error at __init__.py:*)
  hgext/fsmonitor/pywatchman/pybser.py: error importing: <ImportError> No module named 'pybser' (error at __init__.py:*)
  hgext/fsmonitor/watchmanclient.py: error importing: <ImportError> No module named 'pybser' (error at __init__.py:*)
  hgext/mq.py: error importing: <TypeError> __import__() argument 1 must be str, not bytes (error at extensions.py:*)
  mercurial/scmwindows.py: error importing: <ImportError> No module named 'winreg' (error at scmwindows.py:*)
  mercurial/win32.py: error importing: <ImportError> No module named 'msvcrt' (error at win32.py:*)
  mercurial/windows.py: error importing: <ImportError> No module named 'msvcrt' (error at windows.py:*)

#endif

#if py3exe py3pygments
  $ hg files 'set:(**.py) and grep(pygments)' | sed 's|\\|/|g' \
  > | xargs $PYTHON3 contrib/check-py3-compat.py \
  > | sed 's/[0-9][0-9]*)$/*)/'
#endif