diff options
Diffstat (limited to 'Lib')
| -rw-r--r-- | Lib/test/test_codecs.py | 2 | ||||
| -rw-r--r-- | Lib/test/test_memoryview.py | 192 |
2 files changed, 191 insertions, 3 deletions
diff --git a/Lib/test/test_codecs.py b/Lib/test/test_codecs.py index a7da809..e485fdd 100644 --- a/Lib/test/test_codecs.py +++ b/Lib/test/test_codecs.py @@ -621,7 +621,7 @@ class UTF8SigTest(ReadTest): def test_bug1601501(self): # SF bug #1601501: check that the codec works with a buffer - str(b"\xef\xbb\xbf", "utf-8-sig") + self.assertEquals(str(b"\xef\xbb\xbf", "utf-8-sig"), "") def test_bom(self): d = codecs.getincrementaldecoder("utf-8-sig")() diff --git a/Lib/test/test_memoryview.py b/Lib/test/test_memoryview.py index b3d478d..dca48b1 100644 --- a/Lib/test/test_memoryview.py +++ b/Lib/test/test_memoryview.py @@ -5,8 +5,166 @@ XXX We need more tests! Some tests are in test_bytes import unittest import test.support +import sys -class MemoryviewTest(unittest.TestCase): + +class CommonMemoryTests: + # + # Tests common to direct memoryviews and sliced memoryviews + # + + base_object = b"abcdef" + + def check_getitem_with_type(self, tp): + b = tp(self.base_object) + oldrefcount = sys.getrefcount(b) + m = self._view(b) + self.assertEquals(m[0], b"a") + self.assert_(isinstance(m[0], bytes), type(m[0])) + self.assertEquals(m[5], b"f") + self.assertEquals(m[-1], b"f") + self.assertEquals(m[-6], b"a") + # Bounds checking + self.assertRaises(IndexError, lambda: m[6]) + self.assertRaises(IndexError, lambda: m[-7]) + self.assertRaises(IndexError, lambda: m[sys.maxsize]) + self.assertRaises(IndexError, lambda: m[-sys.maxsize]) + # Type checking + self.assertRaises(TypeError, lambda: m[None]) + self.assertRaises(TypeError, lambda: m[0.0]) + self.assertRaises(TypeError, lambda: m["a"]) + m = None + self.assertEquals(sys.getrefcount(b), oldrefcount) + + def test_getitem_readonly(self): + self.check_getitem_with_type(bytes) + + def test_getitem_writable(self): + self.check_getitem_with_type(bytearray) + + def test_setitem_readonly(self): + b = self.base_object + oldrefcount = sys.getrefcount(b) + m = self._view(b) + def setitem(value): + m[0] = value + self.assertRaises(TypeError, setitem, b"a") + self.assertRaises(TypeError, setitem, 65) + self.assertRaises(TypeError, setitem, memoryview(b"a")) + m = None + self.assertEquals(sys.getrefcount(b), oldrefcount) + + def test_setitem_writable(self): + b = bytearray(self.base_object) + oldrefcount = sys.getrefcount(b) + m = self._view(b) + m[0] = b"0" + self._check_contents(b, b"0bcdef") + m[1:3] = b"12" + self._check_contents(b, b"012def") + m[1:1] = b"" + self._check_contents(b, b"012def") + m[:] = b"abcdef" + self._check_contents(b, b"abcdef") + + # Overlapping copies of a view into itself + m[0:3] = m[2:5] + self._check_contents(b, b"cdedef") + m[:] = b"abcdef" + m[2:5] = m[0:3] + self._check_contents(b, b"ababcf") + + def setitem(key, value): + m[key] = value + # Bounds checking + self.assertRaises(IndexError, setitem, 6, b"a") + self.assertRaises(IndexError, setitem, -7, b"a") + self.assertRaises(IndexError, setitem, sys.maxsize, b"a") + self.assertRaises(IndexError, setitem, -sys.maxsize, b"a") + # Wrong index/slice types + self.assertRaises(TypeError, setitem, 0.0, b"a") + self.assertRaises(TypeError, setitem, (0,), b"a") + self.assertRaises(TypeError, setitem, "a", b"a") + # Trying to resize the memory object + self.assertRaises(ValueError, setitem, 0, b"") + self.assertRaises(ValueError, setitem, 0, b"ab") + self.assertRaises(ValueError, setitem, slice(1,1), b"a") + self.assertRaises(ValueError, setitem, slice(0,2), b"a") + + m = None + self.assertEquals(sys.getrefcount(b), oldrefcount) + + def test_len(self): + self.assertEquals(len(self._view(self.base_object)), 6) + + def test_tobytes(self): + m = self._view(self.base_object) + b = m.tobytes() + self.assertEquals(b, b"abcdef") + self.assert_(isinstance(b, bytes), type(b)) + + def test_tolist(self): + m = self._view(self.base_object) + l = m.tolist() + self.assertEquals(l, list(b"abcdef")) + + def test_compare(self): + # memoryviews can compare for equality with other objects + # having the buffer interface. + m = self._view(self.base_object) + for tp in (bytes, bytearray): + self.assertTrue(m == tp(b"abcdef")) + self.assertFalse(m != tp(b"abcdef")) + self.assertFalse(m == tp(b"abcde")) + self.assertTrue(m != tp(b"abcde")) + self.assertFalse(m == tp(b"abcde1")) + self.assertTrue(m != tp(b"abcde1")) + self.assertTrue(m == m) + self.assertTrue(m == m[:]) + self.assertTrue(m[0:6] == m[:]) + self.assertFalse(m[0:5] == m) + + # Comparison with objects which don't support the buffer API + self.assertFalse(m == "abc") + self.assertTrue(m != "abc") + self.assertFalse("abc" == m) + self.assertTrue("abc" != m) + + # Unordered comparisons + for c in (m, b"abcdef"): + self.assertRaises(TypeError, lambda: m < c) + self.assertRaises(TypeError, lambda: c <= m) + self.assertRaises(TypeError, lambda: m >= c) + self.assertRaises(TypeError, lambda: c > m) + + def check_attributes_with_type(self, tp): + b = tp(self.base_object) + m = self._view(b) + self.assertEquals(m.format, 'B') + self.assertEquals(m.itemsize, 1) + self.assertEquals(m.ndim, 1) + self.assertEquals(m.shape, (6,)) + self.assertEquals(m.size, 6) + self.assertEquals(m.strides, (1,)) + self.assertEquals(m.suboffsets, None) + return m + + def test_attributes_readonly(self): + m = self.check_attributes_with_type(bytes) + self.assertEquals(m.readonly, True) + + def test_attributes_writable(self): + m = self.check_attributes_with_type(bytearray) + self.assertEquals(m.readonly, False) + + +class MemoryviewTest(unittest.TestCase, CommonMemoryTests): + + def _view(self, obj): + return memoryview(obj) + + def _check_contents(self, obj, contents): + self.assertEquals(obj, contents) def test_constructor(self): ob = b'test' @@ -17,8 +175,38 @@ class MemoryviewTest(unittest.TestCase): self.assertRaises(TypeError, memoryview, argument=ob) self.assertRaises(TypeError, memoryview, ob, argument=True) + +class MemorySliceTest(unittest.TestCase, CommonMemoryTests): + base_object = b"XabcdefY" + + def _view(self, obj): + m = memoryview(obj) + return m[1:7] + + def _check_contents(self, obj, contents): + self.assertEquals(obj[1:7], contents) + + def test_refs(self): + m = memoryview(b"ab") + oldrefcount = sys.getrefcount(m) + m[1:2] + self.assertEquals(sys.getrefcount(m), oldrefcount) + + +class MemorySliceSliceTest(unittest.TestCase, CommonMemoryTests): + base_object = b"XabcdefY" + + def _view(self, obj): + m = memoryview(obj) + return m[:7][1:] + + def _check_contents(self, obj, contents): + self.assertEquals(obj[1:7], contents) + + def test_main(): - test.support.run_unittest(MemoryviewTest) + test.support.run_unittest( + MemoryviewTest, MemorySliceTest, MemorySliceSliceTest) if __name__ == "__main__": |