# Copyright (c) Twisted Matrix Laboratories.
# See LICENSE for details.

"""
Tests to ensure all attributes of L{twisted.internet.gtkreactor} are
deprecated.
"""

import sys

from twisted.trial.unittest import TestCase


class GtkReactorDeprecation(TestCase):
"""
Tests to ensure all attributes of L{twisted.internet.gtkreactor} are
deprecated.
"""

class StubGTK:
class GDK:
INPUT_READ = None
def input_add(self, *params):
pass

class StubPyGTK:
def require(self, something):
pass

def setUp(self):
"""
Create a stub for the module 'gtk' if it does not exist, so that it can
be imported without errors or warnings.
"""
self.mods = sys.modules.copy()
sys.modules['gtk'] = self.StubGTK()
sys.modules['pygtk'] = self.StubPyGTK()


def tearDown(self):
"""
Return sys.modules to the way it was before the test.
"""
sys.modules.clear()
sys.modules.update(self.mods)


def lookForDeprecationWarning(self, testmethod, attributeName):
warningsShown = self.flushWarnings([testmethod])
self.assertEqual(len(warningsShown), 1)
self.assertIs(warningsShown[0]['category'], DeprecationWarning)
self.assertEqual(
warningsShown[0]['message'],
"twisted.internet.gtkreactor." + attributeName + " "
"was deprecated in Twisted 10.1.0: All new applications should be "
"written with gtk 2.x, which is supported by "
"twisted.internet.gtk2reactor.")


def test_gtkReactor(self):
"""
Test deprecation of L{gtkreactor.GtkReactor}
"""
from twisted.internet import gtkreactor
gtkreactor.GtkReactor();
self.lookForDeprecationWarning(self.test_gtkReactor, "GtkReactor")


def test_portableGtkReactor(self):
"""
Test deprecation of L{gtkreactor.GtkReactor}
"""
from twisted.internet import gtkreactor
gtkreactor.PortableGtkReactor()
self.lookForDeprecationWarning(self.test_portableGtkReactor,
"PortableGtkReactor")


def test_install(self):
"""
Test deprecation of L{gtkreactor.install}
"""
from twisted.internet import gtkreactor
self.assertRaises(AssertionError, gtkreactor.install)
self.lookForDeprecationWarning(self.test_install, "install")


def test_portableInstall(self):
"""
Test deprecation of L{gtkreactor.portableInstall}
"""
from twisted.internet import gtkreactor
self.assertRaises(AssertionError, gtkreactor.portableInstall)
self.lookForDeprecationWarning(self.test_portableInstall,
"portableInstall")