77 lines
1.6 KiB
Python
77 lines
1.6 KiB
Python
# test memoryview
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try:
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memoryview
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except:
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print("SKIP")
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raise SystemExit
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try:
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import array
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except ImportError:
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print("SKIP")
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raise SystemExit
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# test reading from bytes
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b = b'1234'
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m = memoryview(b)
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print(len(m))
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print(m[0], m[1], m[-1])
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print(list(m))
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# test writing to bytes
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try:
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m[0] = 1
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except TypeError:
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print("TypeError")
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try:
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m[0:2] = b'00'
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except TypeError:
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print("TypeError")
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# test writing to bytearray
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b = bytearray(b)
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m = memoryview(b)
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m[0] = 1
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print(b)
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print(list(m))
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# test slice
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m = memoryview(b'1234')
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print(list(m[1:]))
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print(list(m[1:-1]))
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# this tests get_buffer of memoryview
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m = memoryview(bytearray(2))
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print(bytearray(m))
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print(list(memoryview(memoryview(b'1234')))) # read-only memoryview
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a = array.array('i', [1, 2, 3, 4])
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m = memoryview(a)
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print(list(m))
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print(list(m[1:-1]))
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m[2] = 6
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print(a)
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# invalid attribute
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try:
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memoryview(b'a').noexist
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except AttributeError:
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print('AttributeError')
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# equality
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print(memoryview(b'abc') == b'abc')
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print(memoryview(b'abc') != b'abc')
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print(memoryview(b'abc') == b'xyz')
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print(memoryview(b'abc') != b'xyz')
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print(b'abc' == memoryview(b'abc'))
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print(b'abc' != memoryview(b'abc'))
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print(b'abc' == memoryview(b'xyz'))
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print(b'abc' != memoryview(b'xyz'))
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print(memoryview(b'abcdef')[2:4] == b'cd')
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print(memoryview(b'abcdef')[2:4] != b'cd')
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print(memoryview(b'abcdef')[2:4] == b'xy')
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print(memoryview(b'abcdef')[2:4] != b'xy')
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print(b'cd' == memoryview(b'abcdef')[2:4])
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print(b'cd' != memoryview(b'abcdef')[2:4])
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print(b'xy' == memoryview(b'abcdef')[2:4])
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print(b'xy' != memoryview(b'abcdef')[2:4])
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