<filename>blinker-rel-0.8/tests/test_saferef.py
# -*- coding: utf-8 -*-

# extracted from Louie, http://pylouie.org/
# updated for Python 3
#
# Copyright (c) 2006 <NAME>, <NAME>,
#                    <NAME>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
#     * Redistributions of source code must retain the above copyright
#       notice, this list of conditions and the following disclaimer.
#
#     * Redistributions in binary form must reproduce the above
#       copyright notice, this list of conditions and the following
#       disclaimer in the documentation and/or other materials provided
#       with the distribution.
#
#     * Neither the name of the <ORGANIZATION> nor the names of its
#       contributors may be used to endorse or promote products derived
#       from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
import unittest

from blinker._saferef import safe_ref


class _Sample1(object):
    def x(self):
        pass


def _sample2(obj):
    pass


class _Sample3(object):
    def __call__(self, obj):
        pass


class TestSaferef(unittest.TestCase):

    # XXX: The original tests had a test for closure, and it had an
    # off-by-one problem, perhaps due to scope issues.  It has been
    # removed from this test suite.

    def setUp(self):
        ts = []
        ss = []
        for x in range(100):
            t = _Sample1()
            ts.append(t)
            s = safe_ref(t.x, self._closure)
            ss.append(s)
        ts.append(_sample2)
        ss.append(safe_ref(_sample2, self._closure))
        for x in range(30):
            t = _Sample3()
            ts.append(t)
            s = safe_ref(t, self._closure)
            ss.append(s)
        self.ts = ts
        self.ss = ss
        self.closure_count = 0

    def tearDown(self):
        if hasattr(self, 'ts'):
            del self.ts
        if hasattr(self, 'ss'):
            del self.ss

    def test_In(self):
        """Test the `in` operator for safe references (cmp)"""
        for t in self.ts[:50]:
            assert safe_ref(t.x) in self.ss

    def test_Valid(self):
        """Test that the references are valid (return instance methods)"""
        for s in self.ss:
            assert s()

    def test_ShortCircuit(self):
        """Test that creation short-circuits to reuse existing references"""
        sd = {}
        for s in self.ss:
            sd[s] = 1
        for t in self.ts:
            if hasattr(t, 'x'):
                assert sd.has_key(safe_ref(t.x))
            else:
                assert sd.has_key(safe_ref(t))

    def test_Representation(self):
        """Test that the reference object's representation works

        XXX Doesn't currently check the results, just that no error
            is raised
        """
        repr(self.ss[-1])

    def _closure(self, ref):
        """Dumb utility mechanism to increment deletion counter"""
        self.closure_count += 1


<filename>blinker-rel-0.8/tests/test_saferef.py
# -*- coding: utf-8 -*-

# extracted from Louie, http://pylouie.org/
# updated for Python 3
#
# Copyright (c) 2006 <NAME>, <NAME>,
#                    <NAME>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
#     * Redistributions of source code must retain the above copyright
#       notice, this list of conditions and the following disclaimer.
#
#     * Redistributions in binary form must reproduce the above
#       copyright notice, this list of conditions and the following
#       disclaimer in the documentation and/or other materials provided
#       with the distribution.
#
#     * Neither the name of the <ORGANIZATION> nor the names of its
#       contributors may be used to endorse or promote products derived
#       from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
import unittest

from blinker._saferef import safe_ref


class _Sample1(object):
    def x(self):
        pass


def _sample2(obj):
    pass


class _Sample3(object):
    def __call__(self, obj):
        pass


class TestSaferef(unittest.TestCase):

    # XXX: The original tests had a test for closure, and it had an
    # off-by-one problem, perhaps due to scope issues.  It has been
    # removed from this test suite.

    def setUp(self):
        ts = []
        ss = []
        for x in range(100):
            t = _Sample1()
            ts.append(t)
            s = safe_ref(t.x, self._closure)
            ss.append(s)
        ts.append(_sample2)
        ss.append(safe_ref(_sample2, self._closure))
        for x in range(30):
            t = _Sample3()
            ts.append(t)
            s = safe_ref(t, self._closure)
            ss.append(s)
        self.ts = ts
        self.ss = ss
        self.closure_count = 0

    def tearDown(self):
        if hasattr(self, 'ts'):
            del self.ts
        if hasattr(self, 'ss'):
            del self.ss

    def test_In(self):
        """Test the `in` operator for safe references (cmp)"""
        for t in self.ts[:50]:
            assert safe_ref(t.x) in self.ss

    def test_Valid(self):
        """Test that the references are valid (return instance methods)"""
        for s in self.ss:
            assert s()

    def test_ShortCircuit(self):
        """Test that creation short-circuits to reuse existing references"""
        sd = {}
        for s in self.ss:
            sd[s] = 1
        for t in self.ts:
            if hasattr(t, 'x'):
                assert sd.has_key(safe_ref(t.x))
            else:
                assert sd.has_key(safe_ref(t))

    def test_Representation(self):
        """Test that the reference object's representation works

        XXX Doesn't currently check the results, just that no error
            is raised
        """
        repr(self.ss[-1])

    def _closure(self, ref):
        """Dumb utility mechanism to increment deletion counter"""
        self.closure_count += 1


# -*- coding: utf-8 -*- # extracted from Louie, http://pylouie.org/ # updated for Python 3 # # Copyright (c) 2006 <NAME>, <NAME>, #                    <NAME> # # Redistribution and use in source and binary forms, with or without # modification, are permitted provided that the following conditions are # met: # #     * Redistributions of source code must retain the above copyright #       notice, this list of conditions and the following disclaimer. # #     * Redistributions in binary form must reproduce the above #       copyright notice, this list of conditions and the following #       disclaimer in the documentation and/or other materials provided #       with the distribution. # #     * Neither the name of the <ORGANIZATION> nor the names of its #       contributors may be used to endorse or promote products derived #       from this software without specific prior written permission. # # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. # # XXX: The original tests had a test for closure, and it had an # off-by-one problem, perhaps due to scope issues.  It has been # removed from this test suite. Test the `in` operator for safe references (cmp) Test that the references are valid (return instance methods) Test that creation short-circuits to reuse existing references Test that the reference object's representation works          XXX Doesn't currently check the results, just that no error             is raised Dumb utility mechanism to increment deletion counter