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Contents
module Spec
module Example
module PredicateMatchers
# :call-seq:
# predicate_matchers[matcher_name] = method_on_object
# predicate_matchers[matcher_name] = [method1_on_object, method2_on_object]
#
# Dynamically generates a custom matcher that will match
# a predicate on your class. RSpec provides a couple of these
# out of the box:
#
# exist (for state expectations)
# File.should exist("path/to/file")
#
# an_instance_of (for mock argument matchers)
# mock.should_receive(:message).with(an_instance_of(String))
#
# == Examples
#
# class Fish
# def can_swim?
# true
# end
# end
#
# describe Fish do
# predicate_matchers[:swim] = :can_swim?
# it "should swim" do
# Fish.new.should swim
# end
# end
def predicate_matchers
@predicate_matchers ||= {}
end
def define_methods_from_predicate_matchers # :nodoc:
predicate_matchers.each_pair do |matcher_method, method_on_object|
define_method matcher_method do |*args|
eval("be_#{method_on_object.to_s.gsub('?','')}(*args)")
end
end
end
end
end
end
Version data entries
13 entries across 13 versions & 2 rubygems