forked from s444420/AL-2020
484 lines
16 KiB
Python
484 lines
16 KiB
Python
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import sys
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import re
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import weakref
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import gc
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import ctypes
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import unittest
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import pygame
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from pygame.bufferproxy import BufferProxy
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from pygame.compat import as_bytes
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try:
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BufferError
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except NameError:
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from pygame import BufferError
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class BufferProxyTest(unittest.TestCase):
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view_keywords = {'shape': (5, 4, 3),
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'typestr': '|u1',
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'data': (0, True),
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'strides': (4, 20, 1)}
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def test_module_name(self):
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self.assertEqual(pygame.bufferproxy.__name__,
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"pygame.bufferproxy")
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def test_class_name(self):
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self.assertEqual(BufferProxy.__name__, "BufferProxy")
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def test___array_struct___property(self):
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kwds = self.view_keywords
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v = BufferProxy(kwds)
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d = pygame.get_array_interface(v)
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self.assertEqual(len(d), 5)
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self.assertEqual(d['version'], 3)
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self.assertEqual(d['shape'], kwds['shape'])
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self.assertEqual(d['typestr'], kwds['typestr'])
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self.assertEqual(d['data'], kwds['data'])
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self.assertEqual(d['strides'], kwds['strides'])
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def test___array_interface___property(self):
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kwds = self.view_keywords
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v = BufferProxy(kwds)
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d = v.__array_interface__
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self.assertEqual(len(d), 5)
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self.assertEqual(d['version'], 3)
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self.assertEqual(d['shape'], kwds['shape'])
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self.assertEqual(d['typestr'], kwds['typestr'])
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self.assertEqual(d['data'], kwds['data'])
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self.assertEqual(d['strides'], kwds['strides'])
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def test_parent_property(self):
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kwds = dict(self.view_keywords)
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p = []
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kwds['parent'] = p
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v = BufferProxy(kwds)
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self.assertIs(v.parent, p)
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def test_before(self):
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def callback(parent):
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success.append(parent is p)
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class MyException(Exception):
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pass
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def raise_exception(parent):
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raise MyException("Just a test.")
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kwds = dict(self.view_keywords)
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p = []
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kwds['parent'] = p
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# For array interface
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success = []
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kwds['before'] = callback
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v = BufferProxy(kwds)
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self.assertEqual(len(success), 0)
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d = v.__array_interface__
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self.assertEqual(len(success), 1)
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self.assertTrue(success[0])
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d = v.__array_interface__
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self.assertEqual(len(success), 1)
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d = v = None
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gc.collect()
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self.assertEqual(len(success), 1)
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# For array struct
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success = []
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kwds['before'] = callback
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v = BufferProxy(kwds)
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self.assertEqual(len(success), 0)
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c = v.__array_struct__
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self.assertEqual(len(success), 1)
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self.assertTrue(success[0])
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c = v.__array_struct__
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self.assertEqual(len(success), 1)
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c = v = None
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gc.collect()
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self.assertEqual(len(success), 1)
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# Callback raises an exception
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kwds['before'] = raise_exception
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v = BufferProxy(kwds)
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self.assertRaises(MyException, lambda : v.__array_struct__)
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def test_after(self):
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def callback(parent):
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success.append(parent is p)
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kwds = dict(self.view_keywords)
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p = []
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kwds['parent'] = p
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# For array interface
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success = []
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kwds['after'] = callback
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v = BufferProxy(kwds)
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self.assertEqual(len(success), 0)
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d = v.__array_interface__
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self.assertEqual(len(success), 0)
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d = v.__array_interface__
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self.assertEqual(len(success), 0)
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d = v = None
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gc.collect()
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self.assertEqual(len(success), 1)
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self.assertTrue(success[0])
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# For array struct
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success = []
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kwds['after'] = callback
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v = BufferProxy(kwds)
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self.assertEqual(len(success), 0)
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c = v.__array_struct__
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self.assertEqual(len(success), 0)
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c = v.__array_struct__
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self.assertEqual(len(success), 0)
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c = v = None
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gc.collect()
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self.assertEqual(len(success), 1)
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self.assertTrue(success[0])
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def test_attribute(self):
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v = BufferProxy(self.view_keywords)
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self.assertRaises(AttributeError, getattr, v, 'undefined')
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v.undefined = 12;
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self.assertEqual(v.undefined, 12)
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del v.undefined
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self.assertRaises(AttributeError, getattr, v, 'undefined')
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def test_weakref(self):
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v = BufferProxy(self.view_keywords)
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weak_v = weakref.ref(v)
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self.assertIs(weak_v(), v)
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v = None
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gc.collect()
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self.assertIsNone(weak_v())
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def test_gc(self):
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"""refcount agnostic check that contained objects are freed"""
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def before_callback(parent):
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return r[0]
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def after_callback(parent):
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return r[1]
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class Obj(object):
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pass
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p = Obj()
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a = Obj()
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r = [Obj(), Obj()]
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weak_p = weakref.ref(p)
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weak_a = weakref.ref(a)
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weak_r0 = weakref.ref(r[0])
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weak_r1 = weakref.ref(r[1])
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weak_before = weakref.ref(before_callback)
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weak_after = weakref.ref(after_callback)
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kwds = dict(self.view_keywords)
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kwds['parent'] = p
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kwds['before'] = before_callback
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kwds['after'] = after_callback
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v = BufferProxy(kwds)
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v.some_attribute = a
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weak_v = weakref.ref(v)
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kwds = p = a = before_callback = after_callback = None
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gc.collect()
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self.assertTrue(weak_p() is not None)
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self.assertTrue(weak_a() is not None)
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self.assertTrue(weak_before() is not None)
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self.assertTrue(weak_after() is not None)
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v = None
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[gc.collect() for x in range(4)]
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self.assertTrue(weak_v() is None)
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self.assertTrue(weak_p() is None)
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self.assertTrue(weak_a() is None)
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self.assertTrue(weak_before() is None)
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self.assertTrue(weak_after() is None)
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self.assertTrue(weak_r0() is not None)
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self.assertTrue(weak_r1() is not None)
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r = None
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gc.collect()
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self.assertTrue(weak_r0() is None)
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self.assertTrue(weak_r1() is None)
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# Cycle removal
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kwds = dict(self.view_keywords)
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kwds['parent'] = []
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v = BufferProxy(kwds)
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v.some_attribute = v
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tracked = True
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for o in gc.get_objects():
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if o is v:
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break
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else:
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tracked = False
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self.assertTrue(tracked)
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kwds['parent'].append(v)
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kwds = None
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gc.collect()
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n1 = len(gc.garbage)
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v = None
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gc.collect()
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n2 = len(gc.garbage)
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self.assertEqual(n2, n1)
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def test_c_api(self):
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api = pygame.bufferproxy._PYGAME_C_API
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api_type = type(pygame.base._PYGAME_C_API)
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self.assertIsInstance(api, api_type)
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def test_repr(self):
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v = BufferProxy(self.view_keywords)
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cname = BufferProxy.__name__
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oname, ovalue = re.findall(r"<([^)]+)\(([^)]+)\)>", repr(v))[0]
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self.assertEqual(oname, cname)
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self.assertEqual(v.length, int(ovalue))
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def test_subclassing(self):
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class MyBufferProxy(BufferProxy):
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def __repr__(self):
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return "*%s*" % (BufferProxy.__repr__(self),)
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kwds = dict(self.view_keywords)
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kwds['parent'] = 0
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v = MyBufferProxy(kwds)
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self.assertEqual(v.parent, 0)
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r = repr(v)
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self.assertEqual(r[:2], '*<')
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self.assertEqual(r[-2:], '>*')
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@unittest.skipIf(not pygame.HAVE_NEWBUF, 'newbuf not implemented')
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def NEWBUF_test_newbuf(self):
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from ctypes import string_at
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from pygame.tests.test_utils import buftools
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Exporter = buftools.Exporter
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Importer = buftools.Importer
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exp = Exporter((10,), 'B', readonly=True)
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b = BufferProxy(exp)
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self.assertEqual(b.length, exp.len)
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self.assertEqual(b.raw, string_at(exp.buf, exp.len))
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d = b.__array_interface__
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try:
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self.assertEqual(d['typestr'], '|u1')
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self.assertEqual(d['shape'], exp.shape)
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self.assertEqual(d['strides'], exp.strides)
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self.assertEqual(d['data'], (exp.buf, True))
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finally:
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d = None
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exp = Exporter((3,), '=h')
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b = BufferProxy(exp)
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self.assertEqual(b.length, exp.len)
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self.assertEqual(b.raw, string_at(exp.buf, exp.len))
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d = b.__array_interface__
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try:
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lil_endian = pygame.get_sdl_byteorder() == pygame.LIL_ENDIAN
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f = '{}i{}'.format('<' if lil_endian else '>', exp.itemsize)
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self.assertEqual(d['typestr'], f)
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self.assertEqual(d['shape'], exp.shape)
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self.assertEqual(d['strides'], exp.strides)
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self.assertEqual(d['data'], (exp.buf, False))
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finally:
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d = None
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exp = Exporter((10, 2), '=i')
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b = BufferProxy(exp)
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imp = Importer(b, buftools.PyBUF_RECORDS)
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self.assertTrue(imp.obj is b)
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self.assertEqual(imp.buf, exp.buf)
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self.assertEqual(imp.ndim, exp.ndim)
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self.assertEqual(imp.format, exp.format)
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self.assertEqual(imp.readonly, exp.readonly)
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self.assertEqual(imp.itemsize, exp.itemsize)
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self.assertEqual(imp.len, exp.len)
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self.assertEqual(imp.shape, exp.shape)
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self.assertEqual(imp.strides, exp.strides)
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self.assertTrue(imp.suboffsets is None)
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d = {'typestr': '|u1',
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'shape': (10,),
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'strides': (1,),
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'data': (9, True)} # 9? Will not reading the data anyway.
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b = BufferProxy(d)
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imp = Importer(b, buftools.PyBUF_SIMPLE)
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self.assertTrue(imp.obj is b)
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self.assertEqual(imp.buf, 9)
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self.assertEqual(imp.len, 10)
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self.assertEqual(imp.format, None)
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self.assertEqual(imp.itemsize, 1)
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self.assertEqual(imp.ndim, 0)
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self.assertTrue(imp.readonly)
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self.assertTrue(imp.shape is None)
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self.assertTrue(imp.strides is None)
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self.assertTrue(imp.suboffsets is None)
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try:
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pygame.bufferproxy.get_segcount
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except AttributeError:
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pass
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else:
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def test_oldbuf_arg(self):
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self.OLDBUF_test_oldbuf_arg()
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def OLDBUF_test_oldbuf_arg(self):
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from pygame.bufferproxy import (get_segcount, get_read_buffer,
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get_write_buffer)
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content = as_bytes('\x01\x00\x00\x02') * 12
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memory = ctypes.create_string_buffer(content)
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memaddr = ctypes.addressof(memory)
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def raise_exception(o):
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raise ValueError("An exception")
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bf = BufferProxy({'shape': (len(content),),
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'typestr': '|u1',
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'data': (memaddr, False),
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'strides': (1,)})
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seglen, segaddr = get_read_buffer(bf, 0)
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self.assertEqual(segaddr, 0)
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self.assertEqual(seglen, 0)
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seglen, segaddr = get_write_buffer(bf, 0)
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self.assertEqual(segaddr, 0)
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self.assertEqual(seglen, 0)
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segcount, buflen = get_segcount(bf)
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self.assertEqual(segcount, 1)
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self.assertEqual(buflen, len(content))
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seglen, segaddr = get_read_buffer(bf, 0)
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self.assertEqual(segaddr, memaddr)
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self.assertEqual(seglen, len(content))
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seglen, segaddr = get_write_buffer(bf, 0)
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self.assertEqual(segaddr, memaddr)
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self.assertEqual(seglen, len(content))
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bf = BufferProxy({'shape': (len(content),),
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'typestr': '|u1',
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'data': (memaddr, True),
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'strides': (1,)})
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segcount, buflen = get_segcount(bf)
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self.assertEqual(segcount, 1)
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self.assertEqual(buflen, len(content))
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seglen, segaddr = get_read_buffer(bf, 0)
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self.assertEqual(segaddr, memaddr)
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self.assertEqual(seglen, len(content))
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self.assertRaises(ValueError, get_write_buffer, bf, 0)
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|
bf = BufferProxy({'shape': (len(content),),
|
||
|
|
'typestr': '|u1',
|
||
|
|
'data': (memaddr, True),
|
||
|
|
'strides': (1,),
|
||
|
|
'before': raise_exception})
|
||
|
|
segcount, buflen = get_segcount(bf)
|
||
|
|
self.assertEqual(segcount, 0)
|
||
|
|
self.assertEqual(buflen, 0)
|
||
|
|
|
||
|
|
bf = BufferProxy({'shape': (3, 4),
|
||
|
|
'typestr': '|u4',
|
||
|
|
'data': (memaddr, True),
|
||
|
|
'strides': (12, 4)})
|
||
|
|
segcount, buflen = get_segcount(bf)
|
||
|
|
self.assertEqual(segcount, 3 * 4)
|
||
|
|
self.assertEqual(buflen, 3 * 4 * 4)
|
||
|
|
for i in range(0, 4):
|
||
|
|
seglen, segaddr = get_read_buffer(bf, i)
|
||
|
|
self.assertEqual(segaddr, memaddr + i * 4)
|
||
|
|
self.assertEqual(seglen, 4)
|
||
|
|
|
||
|
|
|
||
|
|
class BufferProxyLegacyTest(unittest.TestCase):
|
||
|
|
content = as_bytes('\x01\x00\x00\x02') * 12
|
||
|
|
buffer = ctypes.create_string_buffer(content)
|
||
|
|
data = (ctypes.addressof(buffer), True)
|
||
|
|
|
||
|
|
def test_length(self):
|
||
|
|
|
||
|
|
# __doc__ (as of 2008-08-02) for pygame.bufferproxy.BufferProxy.length:
|
||
|
|
|
||
|
|
# The size of the buffer data in bytes.
|
||
|
|
bf = BufferProxy({'shape': (3, 4),
|
||
|
|
'typestr': '|u4',
|
||
|
|
'data': self.data,
|
||
|
|
'strides': (12, 4)})
|
||
|
|
self.assertEqual(bf.length, len(self.content))
|
||
|
|
bf = BufferProxy({'shape': (3, 3),
|
||
|
|
'typestr': '|u4',
|
||
|
|
'data': self.data,
|
||
|
|
'strides': (12, 4)})
|
||
|
|
self.assertEqual(bf.length, 3*3*4)
|
||
|
|
|
||
|
|
def test_raw(self):
|
||
|
|
|
||
|
|
# __doc__ (as of 2008-08-02) for pygame.bufferproxy.BufferProxy.raw:
|
||
|
|
|
||
|
|
# The raw buffer data as string. The string may contain NUL bytes.
|
||
|
|
|
||
|
|
bf = BufferProxy({'shape': (len(self.content),),
|
||
|
|
'typestr': '|u1',
|
||
|
|
'data': self.data})
|
||
|
|
self.assertEqual(bf.raw, self.content)
|
||
|
|
bf = BufferProxy({'shape': (3, 4),
|
||
|
|
'typestr': '|u4',
|
||
|
|
'data': self.data,
|
||
|
|
'strides': (4, 12)})
|
||
|
|
self.assertEqual(bf.raw, self.content)
|
||
|
|
bf = BufferProxy({'shape': (3, 4),
|
||
|
|
'typestr': '|u1',
|
||
|
|
'data': self.data,
|
||
|
|
'strides': (16, 4)})
|
||
|
|
self.assertRaises(ValueError, getattr, bf, 'raw')
|
||
|
|
|
||
|
|
def test_write(self):
|
||
|
|
|
||
|
|
# __doc__ (as of 2008-08-02) for pygame.bufferproxy.BufferProxy.write:
|
||
|
|
|
||
|
|
# B.write (bufferproxy, buffer, offset) -> None
|
||
|
|
#
|
||
|
|
# Writes raw data to the bufferproxy.
|
||
|
|
#
|
||
|
|
# Writes the raw data from buffer to the BufferProxy object, starting
|
||
|
|
# at the specified offset within the BufferProxy.
|
||
|
|
# If the length of the passed buffer exceeds the length of the
|
||
|
|
# BufferProxy (reduced by the offset), an IndexError will be raised.
|
||
|
|
from ctypes import c_byte, sizeof, addressof, string_at, memset
|
||
|
|
|
||
|
|
nullbyte = '\x00'.encode('latin_1')
|
||
|
|
Buf = c_byte * 10
|
||
|
|
data_buf = Buf(*range(1, 3 * sizeof(Buf) + 1, 3))
|
||
|
|
data = string_at(data_buf, sizeof(data_buf))
|
||
|
|
buf = Buf()
|
||
|
|
bp = BufferProxy({'typestr': '|u1',
|
||
|
|
'shape': (sizeof(buf),),
|
||
|
|
'data': (addressof(buf), False)})
|
||
|
|
try:
|
||
|
|
self.assertEqual(bp.raw, nullbyte * sizeof(Buf))
|
||
|
|
bp.write(data)
|
||
|
|
self.assertEqual(bp.raw, data)
|
||
|
|
memset(buf, 0, sizeof(buf))
|
||
|
|
bp.write(data[:3], 2)
|
||
|
|
raw = bp.raw
|
||
|
|
self.assertEqual(raw[:2], nullbyte * 2)
|
||
|
|
self.assertEqual(raw[2:5], data[:3])
|
||
|
|
self.assertEqual(raw[5:], nullbyte * (sizeof(Buf) - 5))
|
||
|
|
bp.write(data[:3], bp.length - 3)
|
||
|
|
raw = bp.raw
|
||
|
|
self.assertEqual(raw[-3:], data[:3])
|
||
|
|
self.assertRaises(IndexError, bp.write, data, 1)
|
||
|
|
self.assertRaises(IndexError, bp.write, data[:5], -1)
|
||
|
|
self.assertRaises(IndexError, bp.write, data[:5], bp.length)
|
||
|
|
self.assertRaises(TypeError, bp.write, 12)
|
||
|
|
bp = BufferProxy({'typestr': '|u1',
|
||
|
|
'shape': (sizeof(buf),),
|
||
|
|
'data': (addressof(buf), True)})
|
||
|
|
self.assertRaises(pygame.BufferError, bp.write, '123'.encode('latin_1'))
|
||
|
|
finally:
|
||
|
|
# Make sure bp is garbage collected before buf
|
||
|
|
bp = None
|
||
|
|
gc.collect()
|
||
|
|
|
||
|
|
|
||
|
|
if __name__ == '__main__':
|
||
|
|
unittest.main()
|