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#!/usr/bin/python
'''Unit tests for QGLBuffer'''
import unittest
from PySide.QtCore import QByteArray
from PySide.QtOpenGL import QGLBuffer, QGLWidget
from helper import UsesQApplication
class QGLBufferTest(UsesQApplication):
def testIt(self):
w = QGLWidget()
w.makeCurrent()
b = QGLBuffer()
b.setUsagePattern(QGLBuffer.DynamicDraw)
self.assert_(b.create())
self.assert_(b.bufferId() != 0)
self.assert_(b.bind())
data = QByteArray("12345")
b.allocate(data)
self.assertEqual(b.size(), data.size())
m = b.map(QGLBuffer.ReadOnly)
if m:
self.assertEqual(m, buffer(data.data()))
b.unmap()
m = b.map(QGLBuffer.ReadWrite)
m[3] = 'A'
b.unmap()
result, rdata = b.read(3, 1)
self.assertTrue(result)
self.assertEqual('A', rdata.data())
else:
print " memory mapping is not possible in this OpenGL implementation."
b.release()
if __name__ == '__main__':
unittest.main()
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