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# -*- Mode: Python -*-
# vi:si:et:sw=4:sts=4:ts=4
#
# gst-python - Python bindings for GStreamer
# Copyright (C) 2009 Edward Hervey
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1307 USA
from common import gobject, gst, unittest, TestCase
class AdapterTest(TestCase):
def setUp(self):
TestCase.setUp(self)
self.adapter = gst.Adapter()
def tearDown(self):
self.adapter = None
TestCase.tearDown(self)
def testAvailable(self):
# starts empty
self.assertEquals(self.adapter.available(), 0)
self.assertEquals(self.adapter.available_fast(), 0)
# let's give it 4 bytes
self.adapter.push(gst.Buffer("1234"))
self.assertEquals(self.adapter.available_fast(), 4)
# let's give it another 5 bytes
self.adapter.push(gst.Buffer("56789"))
# we now have 9 bytes
self.assertEquals(self.adapter.available(), 9)
# but can only do a fast take of 4 bytes (the first buffer)
self.assertEquals(self.adapter.available_fast(), 4)
def testPeek(self):
self.adapter.push(gst.Buffer("0123456789"))
# let's peek at 5 bytes
b = self.adapter.peek(5)
# it can return more than 5 bytes
self.assert_(len(b) >= 5)
self.assertEquals(b, "01234")
# it's still 10 bytes big
self.assertEquals(self.adapter.available(), 10)
# if we try to peek more than what's available, we'll have None
self.assertEquals(self.adapter.peek(11), None)
def testFlush(self):
self.adapter.push(gst.Buffer("0123456789"))
self.assertEquals(self.adapter.available(), 10)
self.adapter.flush(5)
self.assertEquals(self.adapter.available(), 5)
# it flushed the first 5 bytes
self.assertEquals(self.adapter.peek(5), "56789")
self.adapter.flush(5)
self.assertEquals(self.adapter.available(), 0)
def testTake(self):
self.adapter.push(gst.Buffer("0123456789"))
self.assertEquals(self.adapter.available(), 10)
s = self.adapter.take(5)
self.assertEquals(s, "01234")
self.assertEquals(self.adapter.available(), 5)
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