1module Spec
2 module Matchers
3
4 class Satisfy #:nodoc:
5 def initialize(&block)
6 @block = block
7 end
8
9 def matches?(actual, &block)
10 @block = block if block
11 @actual = actual
12 @block.call(actual)
13 end
14
15 def failure_message
16 "expected #{@actual} to satisfy block"
17 end
18
19 def negative_failure_message
20 "expected #{@actual} not to satisfy block"
21 end
22 end
23
24 # :call-seq:
25 # should satisfy {}
26 # should_not satisfy {}
27 #
28 # Passes if the submitted block returns true. Yields target to the
29 # block.
30 #
31 # Generally speaking, this should be thought of as a last resort when
32 # you can't find any other way to specify the behaviour you wish to
33 # specify.
34 #
35 # If you do find yourself in such a situation, you could always write
36 # a custom matcher, which would likely make your specs more expressive.
37 #
38 # == Examples
39 #
40 # 5.should satisfy { |n|
41 # n > 3
42 # }
43 def satisfy(&block)
44 Matchers::Satisfy.new(&block)
45 end
46 end
47end