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73 lines
1.2 KiB
Python
73 lines
1.2 KiB
Python
# simple values
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assert max(0, 0) == 0
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assert max(1, 0) == 1
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assert max(1., 0.) == 1.
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assert max(-1, 0) == 0
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assert max(1, 2, 3) == 3
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# iterables
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assert max([1, 2, 3]) == 3
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assert max((1, 2, 3)) == 3
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assert max({
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"a": 0,
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"b": 1,
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}) == "b"
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assert max([1, 2], default=0) == 2
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assert max([], default=0) == 0
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try:
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max([])
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except ValueError:
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pass
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else:
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assert False, "ValueError was not raised"
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# key parameter
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assert max(1, 2, -3, key=abs) == -3
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assert max([1, 2, -3], key=abs) == -3
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# no argument
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try:
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max()
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except TypeError:
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pass
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else:
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assert False, "TypeError was not raised"
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# one non-iterable argument
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try:
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max(1)
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except TypeError:
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pass
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else:
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assert False, "TypeError was not raised"
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# custom class
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class MyComparable():
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nb = 0
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def __init__(self):
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self.my_nb = MyComparable.nb
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MyComparable.nb += 1
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def __gt__(self, other):
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return self.my_nb > other.my_nb
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first = MyComparable()
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second = MyComparable()
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assert max(first, second) == second
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assert max([first, second]) == second
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class MyNotComparable():
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pass
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try:
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max(MyNotComparable(), MyNotComparable())
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except TypeError:
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pass
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else:
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assert False, "TypeError was not raised"
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