# -*- test-case-name: twisted.trial.test.test_tests -*-
# Copyright (c) Twisted Matrix Laboratories.
# See LICENSE for details.

"""
Test cases used to make sure that warning suppression works at the module,
method, and class levels.

See the L{twisted.trial.test.test_tests} module docstring for details about how
this code is arranged.
"""

from __future__ import division, absolute_import

import warnings

from twisted.trial import unittest, util



METHOD_WARNING_MSG = "method warning message"
CLASS_WARNING_MSG = "class warning message"
MODULE_WARNING_MSG = "module warning message"

class MethodWarning(Warning):
    pass

class ClassWarning(Warning):
    pass

class ModuleWarning(Warning):
    pass



class EmitMixin(object):
    """
    Mixin for emiting a variety of warnings.
    """

    def _emit(self):
        warnings.warn(METHOD_WARNING_MSG, MethodWarning)
        warnings.warn(CLASS_WARNING_MSG, ClassWarning)
        warnings.warn(MODULE_WARNING_MSG, ModuleWarning)


class SuppressionMixin(EmitMixin):
    suppress = [util.suppress(message=CLASS_WARNING_MSG)]

    def testSuppressMethod(self):
        self._emit()
    testSuppressMethod.suppress = [util.suppress(message=METHOD_WARNING_MSG)]

    def testSuppressClass(self):
        self._emit()

    def testOverrideSuppressClass(self):
        self._emit()
    testOverrideSuppressClass.suppress = []



class SetUpSuppressionMixin(object):
    def setUp(self):
        self._emit()



class TearDownSuppressionMixin(object):
    def tearDown(self):
        self._emit()



class TestSuppression2Mixin(EmitMixin):
    def testSuppressModule(self):
        self._emit()



suppress = [util.suppress(message=MODULE_WARNING_MSG)]


class SynchronousTestSuppression(SuppressionMixin, unittest.SynchronousTestCase):
    pass



class SynchronousTestSetUpSuppression(SetUpSuppressionMixin, SynchronousTestSuppression):
    pass



class SynchronousTestTearDownSuppression(TearDownSuppressionMixin, SynchronousTestSuppression):
    pass



class SynchronousTestSuppression2(TestSuppression2Mixin, unittest.SynchronousTestCase):
    pass



class AsynchronousTestSuppression(SuppressionMixin, unittest.TestCase):
    pass



class AsynchronousTestSetUpSuppression(SetUpSuppressionMixin, AsynchronousTestSuppression):
    pass



class AsynchronousTestTearDownSuppression(TearDownSuppressionMixin, AsynchronousTestSuppression):
    pass



class AsynchronousTestSuppression2(TestSuppression2Mixin, unittest.TestCase):
    pass
