from testutils import assert_raises

# simple values

assert min(0, 0) == 0

assert min(1, 0) == 0

assert min(1.0, 0.0) == 0.0

assert min(-1, 0) == -1

assert min(1, 2, 3) == 1

# iterables

assert min([1, 2, 3]) == 1

assert min((1, 2, 3)) == 1

assert (

min(

{

"a": 0,

"b": 1,

}

)

== "a"

)

assert min([1, 2], default=0) == 1

assert min([], default=0) == 0

assert_raises(ValueError, min, [])

# key parameter

assert min(1, 2, -3, key=abs) == 1

assert min([1, 2, -3], key=abs) == 1

# no argument

assert_raises(TypeError, min)

# one non-iterable argument

assert_raises(TypeError, min, 1)

# custom class

class MyComparable:

nb = 0

def __init__(self):

self.my_nb = MyComparable.nb

MyComparable.nb += 1

def __gt__(self, other):

return self.my_nb > other.my_nb

first = MyComparable()

second = MyComparable()

assert min(first, second) == first

assert min([first, second]) == first

class MyNotComparable:

pass

assert_raises(TypeError, min, MyNotComparable(), MyNotComparable())