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# -*- coding: utf-8 -*-
from __future__ import generators
import py
import sys
saferepr = py.io.saferepr
class TestSafeRepr:
def test_simple_repr(self):
assert saferepr(1) == '1'
assert saferepr(None) == 'None'
def test_maxsize(self):
s = saferepr('x'*50, maxsize=25)
assert len(s) == 25
expected = repr('x'*10 + '...' + 'x'*10)
assert s == expected
def test_maxsize_error_on_instance(self):
class A:
def __repr__(self):
raise ValueError('...')
s = saferepr(('*'*50, A()), maxsize=25)
assert len(s) == 25
assert s[0] == '(' and s[-1] == ')'
def test_exceptions(self):
class BrokenRepr:
def __init__(self, ex):
self.ex = ex
foo = 0
def __repr__(self):
raise self.ex
class BrokenReprException(Exception):
__str__ = None
__repr__ = None
assert 'Exception' in saferepr(BrokenRepr(Exception("broken")))
s = saferepr(BrokenReprException("really broken"))
assert 'TypeError' in s
assert 'TypeError' in saferepr(BrokenRepr("string"))
s2 = saferepr(BrokenRepr(BrokenReprException('omg even worse')))
assert 'NameError' not in s2
assert 'unknown' in s2
def test_big_repr(self):
from py._io.saferepr import SafeRepr
assert len(saferepr(range(1000))) <= \
len('[' + SafeRepr().maxlist * "1000" + ']')
def test_repr_on_newstyle(self):
class Function(object):
def __repr__(self):
return "<%s>" %(self.name)
try:
s = saferepr(Function())
except Exception:
py.test.fail("saferepr failed for newstyle class")
def test_unicode(self):
val = py.builtin._totext('£€', 'utf-8')
reprval = py.builtin._totext("'£€'", 'utf-8')
assert saferepr(val) == reprval
def test_unicode_handling():
value = py.builtin._totext('\xc4\x85\xc4\x87\n', 'utf-8').encode('utf8')
def f():
raise Exception(value)
excinfo = py.test.raises(Exception, f)
s = str(excinfo)
if sys.version_info[0] < 3:
u = unicode(excinfo)
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