Test on latest PyPy

[hugovk]

Before: 3 failures

1. test_syntaxerror_rerepresentation
2. test_comments
3. TestImportlibImport.test_pyimport_relative_import_fails

$ python --version
Python 3.5.3 (fdd60ed87e94, Apr 24 2018, 06:10:04)
[PyPy 6.0.0 with GCC 6.2.0 20160901]

=================================== FAILURES ===================================
______________________ test_syntaxerror_rerepresentation _______________________
    def test_syntaxerror_rerepresentation():
        ex = py.test.raises(SyntaxError, py.code.compile, 'xyz xyz')
        assert ex.value.lineno == 1
>       assert ex.value.offset in (4,7) # XXX pypy/jython versus cpython?
E       assert 5 in (4, 7)
E        +  where 5 = SyntaxError('xyz xyz\n     ^\n(code was compiled probably from here: <3-codegen /home/travis/virtualenv/pypy3.5-6.0.0/site-packages/_pytest/python.py:1318>)',).offset
E        +    where SyntaxError('xyz xyz\n     ^\n(code was compiled probably from here: <3-codegen /home/travis/virtualenv/pypy3.5-6.0.0/site-packages/_pytest/python.py:1318>)',) = <ExceptionInfo SyntaxError tblen=3>.value
testing/code/test_source.py:106: AssertionError
________________________________ test_comments _________________________________
    def test_comments():
        source = '''def test():
        "comment 1"
        x = 1
          # comment 2
        # comment 3
    
        assert False
    
    """
    comment 4
    """
    '''
        for line in range(2,6):
            assert str(getstatement(line, source)) == '    x = 1'
        for line in range(6,10):
>           assert str(getstatement(line, source)) == '    assert False'
E           assert '"""\ncomment 4\n"""' == '    assert False'
E             +     assert False
E             - """
E             - comment 4
E             - """
testing/code/test_source.py:516: AssertionError
___________ TestImportlibImport.test_pyimport_relative_import_fails ____________
self = <test_local.TestImportlibImport object at 0x00007f11e2eb0c60>
path1 = local('/tmp/pytest-of-travis/pytest-0/path0')
    def test_pyimport_relative_import_fails(self, path1):
        otherdir = path1.join('otherdir')
        with pytest.raises(ImportError):
>           otherdir.join('a.py').pyimport(**self.OPTS)
/home/travis/build/pytest-dev/py/testing/path/test_local.py:645: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
/home/travis/build/pytest-dev/py/py/_path/local.py:684: in pyimport
    spec.loader.exec_module(mod)
<builtin>/frozen importlib._bootstrap_external:686: in exec_module
    ???
<frozen importlib._bootstrap>:223: in _call_with_frames_removed
    ???
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
>   from .b import stuff as result
E   SystemError: Parent module '' not loaded, cannot perform relative import
otherdir/a.py:1: SystemError
========= 3 failed, 820 passed, 37 skipped, 5 xfailed in 25.93 seconds =========

https://travis-ci.org/pytest-dev/py/jobs/639094218

After: 2 failures

1. test_syntaxerror_rerepresentation
2. test_comments

$ python --version
Python 3.6.1 (784b254d6699, Apr 14 2019, 10:22:42)
[PyPy 7.1.1-beta0 with GCC 6.2.0 20160901]

=================================== FAILURES ===================================
______________________ test_syntaxerror_rerepresentation _______________________
    def test_syntaxerror_rerepresentation():
        ex = py.test.raises(SyntaxError, py.code.compile, 'xyz xyz')
        assert ex.value.lineno == 1
>       assert ex.value.offset in (4,7) # XXX pypy/jython versus cpython?
E       assert 5 in (4, 7)
E        +  where 5 = SyntaxError('xyz xyz\n     ^\n(code was compiled probably from here: <3-codegen /home/travis/virtualenv/pypy3.6-7.1.1/site-packages/_pytest/python.py:1318>)',).offset
E        +    where SyntaxError('xyz xyz\n     ^\n(code was compiled probably from here: <3-codegen /home/travis/virtualenv/pypy3.6-7.1.1/site-packages/_pytest/python.py:1318>)',) = <ExceptionInfo SyntaxError tblen=3>.value
testing/code/test_source.py:106: AssertionError
________________________________ test_comments _________________________________
    def test_comments():
        source = '''def test():
        "comment 1"
        x = 1
          # comment 2
        # comment 3
    
        assert False
    
    """
    comment 4
    """
    '''
        for line in range(2,6):
            assert str(getstatement(line, source)) == '    x = 1'
        for line in range(6,10):
>           assert str(getstatement(line, source)) == '    assert False'
E           assert '"""\ncomment 4\n"""' == '    assert False'
E             +     assert False
E             - """
E             - comment 4
E             - """
testing/code/test_source.py:516: AssertionError
========= 2 failed, 821 passed, 37 skipped, 5 xfailed in 24.92 seconds =========

https://travis-ci.org/hugovk/py/jobs/639091764

[asottile]