forked from Rust-related/RustPython
47e95486f0
- Move assert_raises to testutils - Add optional message argument, with reasonable default - Reverse order of expr and exception type for readability - Lambda argument no longer takes parameter - Convert applicable snippets to use assert_raises
53 lines
1.6 KiB
Python
53 lines
1.6 KiB
Python
from testutils import assert_raises
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assert range(2**63+1)[2**63] == 9223372036854775808
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# len tests
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assert len(range(10, 5)) == 0, 'Range with no elements should have length = 0'
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assert len(range(10, 5, -2)) == 3, 'Expected length 3, for elements: 10, 8, 6'
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assert len(range(5, 10, 2)) == 3, 'Expected length 3, for elements: 5, 7, 9'
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# index tests
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assert range(10).index(6) == 6
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assert range(4, 10).index(6) == 2
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assert range(4, 10, 2).index(6) == 1
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assert range(10, 4, -2).index(8) == 1
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assert_raises(ValueError, lambda: range(10).index(-1), 'out of bounds')
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assert_raises(ValueError, lambda: range(10).index(10), 'out of bounds')
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assert_raises(ValueError, lambda: range(4, 10, 2).index(5), 'out of step')
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assert_raises(ValueError, lambda: range(10).index('foo'), 'not an int')
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# count tests
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assert range(10).count(2) == 1
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assert range(10).count(11) == 0
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assert range(10).count(-1) == 0
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assert range(9, 12).count(10) == 1
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assert range(4, 10, 2).count(4) == 1
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assert range(4, 10, 2).count(7) == 0
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assert range(10).count("foo") == 0
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# __bool__
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assert bool(range(1))
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assert bool(range(1, 2))
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assert not bool(range(0))
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assert not bool(range(1, 1))
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# __contains__
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assert 6 in range(10)
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assert 6 in range(4, 10)
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assert 6 in range(4, 10, 2)
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assert 10 in range(10, 4, -2)
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assert 8 in range(10, 4, -2)
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assert -1 not in range(10)
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assert 9 not in range(10, 4, -2)
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assert 4 not in range(10, 4, -2)
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assert 'foo' not in range(10)
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# __reversed__
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assert list(reversed(range(5))) == [4, 3, 2, 1, 0]
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assert list(reversed(range(5, 0, -1))) == [1, 2, 3, 4, 5]
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assert list(reversed(range(1,10,5))) == [6, 1]
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