85 lines
1.5 KiB
Python
85 lines
1.5 KiB
Python
# test slice assignment to memoryview
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try:
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memoryview(bytearray(1))[:] = memoryview(bytearray(1))
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except (NameError, TypeError):
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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 slice assignment between memoryviews
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b1 = bytearray(b'1234')
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b2 = bytearray(b'5678')
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b3 = bytearray(b'5678')
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m1 = memoryview(b1)
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m2 = memoryview(b2)
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m3 = memoryview(b3)
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m2[1:3] = m1[0:2]
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print(b2)
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b3[1:3] = m1[0:2]
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print(b3)
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m1[2:4] = b3[1:3]
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print(b1)
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# invalid slice assignments
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try:
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m2[1:3] = b1[0:4]
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except ValueError:
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print("ValueError")
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try:
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m2[1:3] = m1[0:4]
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except ValueError:
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print("ValueError")
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try:
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m2[0:4] = m1[1:3]
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except ValueError:
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print("ValueError")
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# test memoryview of arrays with items sized larger than 1
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a1 = array.array('i', [0]*5)
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m4 = memoryview(a1)
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a2 = array.array('i', [3]*5)
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m5 = memoryview(a2)
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m4[1:3] = m5[1:3]
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print(a1)
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try:
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m4[1:3] = m2[1:3]
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except ValueError:
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print("ValueError")
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# invalid assignment on RHS
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try:
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memoryview(array.array('i'))[0:2] = b'1234'
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except ValueError:
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print('ValueError')
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# test shift left of bytearray
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b = bytearray(range(10))
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mv = memoryview(b)
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mv[1:] = mv[:-1]
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print(b)
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# test shift right of bytearray
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b = bytearray(range(10))
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mv = memoryview(b)
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mv[:-1] = mv[1:]
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print(b)
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# test shift left of array
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a = array.array('I', range(10))
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mv = memoryview(a)
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mv[1:] = mv[:-1]
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print(a)
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# test shift right of array
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a = array.array('I', range(10))
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mv = memoryview(a)
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mv[:-1] = mv[1:]
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print(a)
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