Lichen

Annotated tests/attr_providers.py

503:644952535f7a
2017-01-23 Paul Boddie Added another, shorter test of get_using, commenting the existing test slightly.
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class C:
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    def __init__(self):
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        self.a = 1
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        self.c = 3
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    b = 2
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class D:
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    def __init__(self):
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        self.a = 3
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        self.b = 4
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class E:
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    a = 5
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    b = 6
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def f(x):
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    return x.a, x.b
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def g(x):
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    # Should only permit D instance and E.
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    x.a = 7
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    x.b = 8
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    return f(x)
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def h(x):
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    x.c
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    x.a = 4
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    x.b
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    return f(x)
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c = C()
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d = D()
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e = E()
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print f(c)          # (1, 2)
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print f(d)          # (3, 4)
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print f(e)          # (5, 6)
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print f(E)          # (5, 6)
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try:
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    print g(c)      # should fail with an error caused by a test
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except TypeError:
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    print "g(c): c is not a suitable argument."
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print g(d)          # (7, 8)
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try:
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    print g(e)      # should fail with an error caused by a test
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except TypeError:
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    print "g(e): e is not a suitable argument."
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print g(E)          # (7, 8)
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print h(c)          # (4, 2)