view tests/test-contrib-testparseutil.t @ 42175:cd1bede340b0 stable

setup: tweak error message for Python 3

We now have beta support for Python 3. In my opinion, it isn't
yet stable enough to allow `pip install Mercurial` to work with
Python 3 out of the box: we don't want people accidentally using
Mercurial with Python 3 just yet.

But I do think we should be more friendly about informing people
of their options.

This commit tweaks the error message that users see when running
setup.py with Python 3. We instruct them about the current level
of Python 3 support, point them at the wiki for more info, and
give them instructions on how to bypass the check.

As part of this, I also changed which version value is printed,
as we were printing a named tuple before.

  $ testparseutil="$TESTDIR"/../contrib/testparseutil.py

Internal test by doctest

  $ "$PYTHON" -m doctest "$testparseutil"

Tests for embedded python script

Typical cases

  $ "$PYTHON" "$testparseutil" -v pyembedded <<NO_CHECK_EOF
  >   >>> for f in [1, 2, 3]:
  >   ...     foo = 1
  >   >>> foo = 2
  >   $ echo "doctest is terminated by command, empty line, or comment"
  >   >>> foo = 31
  >   expected output of doctest fragment
  >   >>> foo = 32
  >   
  >   >>> foo = 33
  > 
  >   >>> foo = 34
  > comment
  >   >>> foo = 35
  > 
  >   $ "\$PYTHON" <<EOF
  >   > foo = 4
  >   > 
  >   > EOF
  >   $ cat > foo.py <<EOF
  >   > foo = 5
  >   > EOF
  >   $ cat >> foo.py <<EOF
  >   > foo = 6 # appended
  >   > EOF
  > 
  > NO_CHECK_EOF limit mark makes parsing ignore corresponded fragment
  > (this is useful to use bad code intentionally)
  > 
  >   $ "\$PYTHON" <<NO_CHECK_EOF
  >   > foo = 7 # this should be ignored at detection
  >   > NO_CHECK_EOF
  >   $ cat > foo.py <<NO_CHECK_EOF
  >   > foo = 8 # this should be ignored at detection
  >   > NO_CHECK_EOF
  > 
  > doctest fragment ended by EOF
  > 
  >   >>> foo = 9
  > NO_CHECK_EOF
  <stdin>:1: <anonymous> starts
    |for f in [1, 2, 3]:
    |    foo = 1
    |foo = 2
  <stdin>:4: <anonymous> ends
  <stdin>:5: <anonymous> starts
    |foo = 31
    |
    |foo = 32
    |
    |foo = 33
  <stdin>:10: <anonymous> ends
  <stdin>:11: <anonymous> starts
    |foo = 34
  <stdin>:12: <anonymous> ends
  <stdin>:13: <anonymous> starts
    |foo = 35
  <stdin>:14: <anonymous> ends
  <stdin>:16: <anonymous> starts
    |foo = 4
    |
  <stdin>:18: <anonymous> ends
  <stdin>:20: foo.py starts
    |foo = 5
  <stdin>:21: foo.py ends
  <stdin>:23: foo.py starts
    |foo = 6 # appended
  <stdin>:24: foo.py ends
  <stdin>:38: <anonymous> starts
    |foo = 9
  <stdin>:39: <anonymous> ends

Invalid test script

(similar test for shell script and hgrc configuration is omitted,
because this tests common base class of them)

  $ "$PYTHON" "$testparseutil" -v pyembedded <<NO_CHECK_EOF > detected
  >   $ "\$PYTHON" <<EOF
  >   > foo = 1
  > 
  >   $ "\$PYTHON" <<EOF
  >   > foo = 2
  >   $ cat > bar.py <<EOF
  >   > bar = 2 # this fragment will be detected as expected
  >   > EOF
  > 
  >   $ cat > foo.py <<EOF
  >   > foo = 3
  > NO_CHECK_EOF
  <stdin>:3: unexpected line for "heredoc python invocation"
  <stdin>:6: unexpected line for "heredoc python invocation"
  <stdin>:11: unexpected end of file for "heredoc .py file"
  [1]
  $ cat detected
  <stdin>:7: bar.py starts
    |bar = 2 # this fragment will be detected as expected
  <stdin>:8: bar.py ends

Tests for embedded shell script

  $ "$PYTHON" "$testparseutil" -v shembedded <<NO_CHECK_EOF
  >   $ cat > foo.sh <<EOF
  >   > foo = 1
  >   > 
  >   > foo = 2
  >   > EOF
  >   $ cat >> foo.sh <<EOF
  >   > foo = 3 # appended
  >   > EOF
  > 
  > NO_CHECK_EOF limit mark makes parsing ignore corresponded fragment
  > (this is useful to use bad code intentionally)
  > 
  >   $ cat > foo.sh <<NO_CHECK_EOF
  >   > # this should be ignored at detection
  >   > foo = 4
  >   > NO_CHECK_EOF
  > 
  > NO_CHECK_EOF
  <stdin>:2: foo.sh starts
    |foo = 1
    |
    |foo = 2
  <stdin>:5: foo.sh ends
  <stdin>:7: foo.sh starts
    |foo = 3 # appended
  <stdin>:8: foo.sh ends

Tests for embedded hgrc configuration

  $ "$PYTHON" "$testparseutil" -v hgrcembedded <<NO_CHECK_EOF
  >   $ cat > .hg/hgrc <<EOF
  >   > [ui]
  >   > verbose = true
  >   > 
  >   > # end of local configuration
  >   > EOF
  > 
  >   $ cat > \$HGRCPATH <<EOF
  >   > [extensions]
  >   > rebase =
  >   > # end of global configuration
  >   > EOF
  > 
  >   $ cat >> \$HGRCPATH <<EOF
  >   > # appended
  >   > [extensions]
  >   > rebase =!
  >   > EOF
  > 
  > NO_CHECK_EOF limit mark makes parsing ignore corresponded fragment
  > (this is useful to use bad code intentionally)
  > 
  >   $ cat > .hg/hgrc <<NO_CHECK_EOF
  >   > # this local configuration should be ignored at detection
  >   > [ui]
  >   > username = foo bar
  >   > NO_CHECK_EOF
  > 
  >   $ cat > \$HGRCPATH <<NO_CHECK_EOF
  >   > # this global configuration should be ignored at detection
  >   > [extensions]
  >   > foobar =
  >   > NO_CHECK_EOF
  > NO_CHECK_EOF
  <stdin>:2: .hg/hgrc starts
    |[ui]
    |verbose = true
    |
    |# end of local configuration
  <stdin>:6: .hg/hgrc ends
  <stdin>:9: $HGRCPATH starts
    |[extensions]
    |rebase =
    |# end of global configuration
  <stdin>:12: $HGRCPATH ends
  <stdin>:15: $HGRCPATH starts
    |# appended
    |[extensions]
    |rebase =!
  <stdin>:18: $HGRCPATH ends