view tests/test-contrib-testparseutil.t @ 45736:2c6b054e22d0

test: add test-transaction-rollback-on-sigpipe.t demonstrating py3 regression

When an hg push is interrupted with C-c, the remote [hg serve] command
receives SIGPIPE.

If a pretxnchangegroup hook fails, the remote hg then tries to
rollback the transaction. It begins by printing "transaction
abort!\n". This returns EPIPE, but ui.py ignores that error.

In python3 (but not python2), this "transaction abort!\n" message
stays in a buffer, so future flushes of stderr will try to print the
message again, and so those flushes will also hit EPIPE.

This test demonstrates such a case where this EPIPE causes the
transaction rollback to fail, leaving behind an abandoned transaction.

Differential Revision: https://phab.mercurial-scm.org/D9151

  $ 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