Test failures with Python 3.9.0b1

[hroncok]

$ tox -e py39
GLOB sdist-make: .../PyCQA/pyflakes/setup.py
py39 inst-nodeps: .../PyCQA/pyflakes/.tox/.tmp/package/1/pyflakes-2.2.0.zip
py39 installed: flake8==3.6.0,mccabe==0.6.1,pycodestyle==2.4.0,pyflakes==2.2.0
py39 run-test-pre: PYTHONHASHSEED='3762849954'
py39 run-test: commands[0] | python -m unittest discover pyflakes
......F....FFF........................s..........................s.......s....................s..............................s...s.............s...............................s...............................................s....s..................s......s..............................................s............ss..s.........s.s.................s...s.............s...............................s...............................................................................................................s....s..................s......s.................s............................................s.....................sss............................................................................s............ss..s.........s.s.
======================================================================
FAIL: test_invalidEscape (test.test_api.CheckTests)
The invalid escape syntax raises ValueError in Python 2
----------------------------------------------------------------------
Traceback (most recent call last):
  File ".../PyCQA/pyflakes/pyflakes/test/test_api.py", line 599, in test_invalidEscape
    self.assertHasErrors(
  File ".../PyCQA/pyflakes/pyflakes/test/test_api.py", line 379, in assertHasErrors
    self.assertEqual(
AssertionError: Tuples differ: (1, "[14 chars]5_:1:13: (unicode error) 'unicodeescape' codec[88 chars]^\n") != (1, "[14 chars]5_:1:7: (unicode error) 'unicodeescape' codec [81 chars]^\n")

First differing element 1:
"/tmp/tmps32en05_:1:13: (unicode error) 'unicodeescape' codec[87 chars] ^\n"
"/tmp/tmps32en05_:1:7: (unicode error) 'unicodeescape' codec [80 chars] ^\n"

  (1,
-  "/tmp/tmps32en05_:1:13: (unicode error) 'unicodeescape' codec can't decode "
?                      ^^

+  "/tmp/tmps32en05_:1:7: (unicode error) 'unicodeescape' codec can't decode "
?                      ^

   'bytes in position 0-1: truncated \\xXX escape\n'
   "foo = '\\xyz'\n"
-  '            ^\n')
?   ------

+  '      ^\n')

======================================================================
FAIL: test_multilineSyntaxError (test.test_api.CheckTests)
Source which includes a syntax error which results in the raised
----------------------------------------------------------------------
Traceback (most recent call last):
  File ".../PyCQA/pyflakes/pyflakes/test/test_api.py", line 458, in test_multilineSyntaxError
    self.assertHasErrors(
  File ".../PyCQA/pyflakes/pyflakes/test/test_api.py", line 379, in assertHasErrors
    self.assertEqual(
AssertionError: Tuples differ: (1, "/tmp/tmpjs72k5vs:8:8: invalid syntax\n    '''quux'''\n       ^\n") != (1, "/tmp/tmpjs72k5vs:8:8: invalid string prefix\n    '''quux'''\n       ^\n")

First differing element 1:
"/tmp/tmpjs72k5vs:8:8: invalid syntax\n    '''quux'''\n       ^\n"
"/tmp/tmpjs72k5vs:8:8: invalid string prefix\n    '''quux'''\n       ^\n"

- (1, "/tmp/tmpjs72k5vs:8:8: invalid syntax\n    '''quux'''\n       ^\n")
?                                     ^ ^^

+ (1, "/tmp/tmpjs72k5vs:8:8: invalid string prefix\n    '''quux'''\n       ^\n")
?                                     ^^^ ^^^^^^^


======================================================================
FAIL: test_nonDefaultFollowsDefaultSyntaxError (test.test_api.CheckTests)
Source which has a non-default argument following a default argument
----------------------------------------------------------------------
Traceback (most recent call last):
  File ".../PyCQA/pyflakes/pyflakes/test/test_api.py", line 528, in test_nonDefaultFollowsDefaultSyntaxError
    self.assertHasErrors(
  File ".../PyCQA/pyflakes/pyflakes/test/test_api.py", line 379, in assertHasErrors
    self.assertEqual(
AssertionError: Tuples differ: (1, '[14 chars]n2:1:21: non-default argument follows default [54 chars]^\n') != (1, '[14 chars]n2:1:9: non-default argument follows default a[41 chars]^\n')

First differing element 1:
'/tmp/tmpms87axn2:1:21: non-default argument follows default [53 chars] ^\n'
'/tmp/tmpms87axn2:1:9: non-default argument follows default a[40 chars] ^\n'

  (1,
-  '/tmp/tmpms87axn2:1:21: non-default argument follows default argument\n'
?                      ^^

+  '/tmp/tmpms87axn2:1:9: non-default argument follows default argument\n'
?                      ^

   'def foo(bar=baz, bax):\n'
-  '                    ^\n')
+  '        ^\n')

======================================================================
FAIL: test_nonKeywordAfterKeywordSyntaxError (test.test_api.CheckTests)
Source which has a non-keyword argument after a keyword argument should
----------------------------------------------------------------------
Traceback (most recent call last):
  File ".../PyCQA/pyflakes/pyflakes/test/test_api.py", line 562, in test_nonKeywordAfterKeywordSyntaxError
    self.assertHasErrors(
  File ".../PyCQA/pyflakes/pyflakes/test/test_api.py", line 379, in assertHasErrors
    self.assertEqual(
AssertionError: Tuples differ: (1, '[15 chars]t:1:17: positional argument follows keyword ar[43 chars]^\n') != (1, '[15 chars]t:1:14: positional argument follows keyword ar[40 chars]^\n')

First differing element 1:
'/tmp/tmpqv6chdyt:1:17: positional argument follows keyword ar[42 chars] ^\n'
'/tmp/tmpqv6chdyt:1:14: positional argument follows keyword ar[39 chars] ^\n'

  (1,
-  '/tmp/tmpqv6chdyt:1:17: positional argument follows keyword argument\n'
?                       ^

+  '/tmp/tmpqv6chdyt:1:14: positional argument follows keyword argument\n'
?                       ^

   'foo(bar=baz, bax)\n'
-  '                ^\n')
?   ---

+  '             ^\n')

----------------------------------------------------------------------
Ran 736 tests in 0.975s

FAILED (failures=4, skipped=37)
ERROR: InvocationError for command .../PyCQA/pyflakes/.tox/py39/bin/python -m unittest discover pyflakes (exited with code 1)
___________________________________ summary ____________________________________
ERROR:   py39: commands failed

This is on master @ cd261ab

[asottile]

some of these were bugs in cpython introduced by the PEG parser so we disabled the tests in #532 -- we'll be following up in the later betas to see if any of them get fixed and then re-enabling / adjusting the tests

[sbraz]

Here are logs from the git master with Python 3.9 rc2. I think with the final version scheduled next week, it is safe to say that there won't be many changes:

......F....FFF........................s..........................s.......s....................s..............................s...s.............s...............................s...............................................s....s..................s......s..............................................s............ss..s.........s.s.................s...s.............s...............................s................................................................................................................s....s..................s......s.................s............................................s.....................sss.................................................................................s............ss..s.........s.s.
======================================================================
FAIL: test_invalidEscape (test.test_api.CheckTests)
The invalid escape syntax raises ValueError in Python 2
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/tmp/pyflakes/pyflakes/test/test_api.py", line 599, in test_invalidEscape
    self.assertHasErrors(
  File "/tmp/pyflakes/pyflakes/test/test_api.py", line 379, in assertHasErrors
    self.assertEqual(
AssertionError: Tuples differ: (1, "[14 chars]xv:1:13: (unicode error) 'unicodeescape' codec[88 chars]^\n") != (1, "[14 chars]xv:1:7: (unicode error) 'unicodeescape' codec [81 chars]^\n")

First differing element 1:
"/tmp/tmpg59cc4xv:1:13: (unicode error) 'unicodeescape' codec[87 chars] ^\n"
"/tmp/tmpg59cc4xv:1:7: (unicode error) 'unicodeescape' codec [80 chars] ^\n"

  (1,
-  "/tmp/tmpg59cc4xv:1:13: (unicode error) 'unicodeescape' codec can't decode "
?                      ^^

+  "/tmp/tmpg59cc4xv:1:7: (unicode error) 'unicodeescape' codec can't decode "
?                      ^

   'bytes in position 0-1: truncated \\xXX escape\n'
   "foo = '\\xyz'\n"
-  '            ^\n')
?   ------

+  '      ^\n')

======================================================================
FAIL: test_multilineSyntaxError (test.test_api.CheckTests)
Source which includes a syntax error which results in the raised
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/tmp/pyflakes/pyflakes/test/test_api.py", line 458, in test_multilineSyntaxError
    self.assertHasErrors(
  File "/tmp/pyflakes/pyflakes/test/test_api.py", line 379, in assertHasErrors
    self.assertEqual(
AssertionError: Tuples differ: (1, "/tmp/tmp150q9qmj:8:8: invalid syntax\n    '''quux'''\n       ^\n") != (1, "/tmp/tmp150q9qmj:8:8: invalid string prefix\n    '''quux'''\n       ^\n")

First differing element 1:
"/tmp/tmp150q9qmj:8:8: invalid syntax\n    '''quux'''\n       ^\n"
"/tmp/tmp150q9qmj:8:8: invalid string prefix\n    '''quux'''\n       ^\n"

- (1, "/tmp/tmp150q9qmj:8:8: invalid syntax\n    '''quux'''\n       ^\n")
?                                     ^ ^^

+ (1, "/tmp/tmp150q9qmj:8:8: invalid string prefix\n    '''quux'''\n       ^\n")
?                                     ^^^ ^^^^^^^


======================================================================
FAIL: test_nonDefaultFollowsDefaultSyntaxError (test.test_api.CheckTests)
Source which has a non-default argument following a default argument
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/tmp/pyflakes/pyflakes/test/test_api.py", line 528, in test_nonDefaultFollowsDefaultSyntaxError
    self.assertHasErrors(
  File "/tmp/pyflakes/pyflakes/test/test_api.py", line 379, in assertHasErrors
    self.assertEqual(
AssertionError: Tuples differ: (1, '[14 chars]r0:1:21: non-default argument follows default [54 chars]^\n') != (1, '[14 chars]r0:1:9: non-default argument follows default a[41 chars]^\n')

First differing element 1:
'/tmp/tmphau2car0:1:21: non-default argument follows default [53 chars] ^\n'
'/tmp/tmphau2car0:1:9: non-default argument follows default a[40 chars] ^\n'

  (1,
-  '/tmp/tmphau2car0:1:21: non-default argument follows default argument\n'
?                      ^^

+  '/tmp/tmphau2car0:1:9: non-default argument follows default argument\n'
?                      ^

   'def foo(bar=baz, bax):\n'
-  '                    ^\n')
+  '        ^\n')

======================================================================
FAIL: test_nonKeywordAfterKeywordSyntaxError (test.test_api.CheckTests)
Source which has a non-keyword argument after a keyword argument should
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/tmp/pyflakes/pyflakes/test/test_api.py", line 562, in test_nonKeywordAfterKeywordSyntaxError
    self.assertHasErrors(
  File "/tmp/pyflakes/pyflakes/test/test_api.py", line 379, in assertHasErrors
    self.assertEqual(
AssertionError: Tuples differ: (1, '[15 chars]b:1:17: positional argument follows keyword ar[43 chars]^\n') != (1, '[15 chars]b:1:14: positional argument follows keyword ar[40 chars]^\n')

First differing element 1:
'/tmp/tmpinz8pyxb:1:17: positional argument follows keyword ar[42 chars] ^\n'
'/tmp/tmpinz8pyxb:1:14: positional argument follows keyword ar[39 chars] ^\n'

  (1,
-  '/tmp/tmpinz8pyxb:1:17: positional argument follows keyword argument\n'
?                       ^

+  '/tmp/tmpinz8pyxb:1:14: positional argument follows keyword argument\n'
?                       ^

   'foo(bar=baz, bax)\n'
-  '                ^\n')
?   ---

+  '             ^\n')

----------------------------------------------------------------------
Ran 742 tests in 0.775s

FAILED (failures=4, skipped=37)