forked from Lephenixnoir/PythonExtra
67 lines
1.1 KiB
Python
67 lines
1.1 KiB
Python
# Tests for deques with "check overflow" flag and other extensions
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# wrt to CPython.
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try:
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try:
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from ucollections import deque
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except ImportError:
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from collections import deque
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except ImportError:
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print("SKIP")
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raise SystemExit
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# Initial sequence is not supported
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try:
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deque([1, 2, 3], 10)
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except ValueError:
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print("ValueError")
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# Not even empty list, only empty tuple
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try:
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deque([], 10)
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except ValueError:
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print("ValueError")
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# Only fixed-size deques are supported, so length arg is mandatory
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try:
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deque(())
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except TypeError:
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print("TypeError")
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d = deque((), 2, True)
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try:
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d.popleft()
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except IndexError:
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print("IndexError")
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print(d.append(1))
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print(d.popleft())
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d.append(2)
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print(d.popleft())
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d.append(3)
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d.append(4)
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print(d.popleft(), d.popleft())
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try:
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d.popleft()
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except IndexError as e:
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print(repr(e))
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d.append(5)
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d.append(6)
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print(len(d))
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try:
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d.append(7)
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except IndexError as e:
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print(repr(e))
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print(len(d))
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print(d.popleft(), d.popleft())
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print(len(d))
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try:
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d.popleft()
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except IndexError as e:
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print(repr(e))
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