blob: 0949fd47ebae9c14b13fd1394344aa49bf9bc840 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
|
class InfinityMatcher
def initialize(expected_sign)
@expected_sign = expected_sign
end
def matches?(actual)
@actual = actual
@actual.kind_of?(Float) && @actual.infinite? == @expected_sign
end
def failure_message
["Expected #{@actual}", "to be #{"-" if @expected_sign == -1}Infinity"]
end
def negative_failure_message
["Expected #{@actual}", "not to be #{"-" if @expected_sign == -1}Infinity"]
end
end
class Object
def be_positive_infinity
InfinityMatcher.new(1)
end
def be_negative_infinity
InfinityMatcher.new(-1)
end
end
|
