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Contents
# created by: http://github.com/xdotcommer
# from: http://github.com/xdotcommer/rspec-custom-matchers/blob/0ecfccd659d5038cdfc88fdc1fee08373e1ee75c/custom_matcher.rb
class CustomMatcher
def self.create(class_name, &block)
klass = Class.new(CustomMatcher)
klass.send(:define_method, :matcher, &block) if block_given?
Object.const_set(build_class_name(class_name), klass)
end
def initialize(expected = nil)
@expected = expected
end
def failure_message
message
end
def negative_failure_message
message(false)
end
def matcher(target, expected)
target == expected
end
def matches?(target)
@target = target
if self.method(:matcher).arity == 2
matcher(@target, @expected)
else
matcher(@target)
end
end
private
def message(positive = true)
"#{positive ? 'Expected' : 'Did not expect'} #{@target.inspect} to #{class_display_name} #{@expected.inspect if self.method(:matcher).arity == 2}"
end
def class_display_name
self.class.to_s.gsub(/[A-Z]/) {|m| ' ' + m.downcase }.lstrip
end
def self.build_class_name(class_name)
class_name.to_s.split('_').map {|s| s.capitalize}.join
end
end
def matcher(name, context = self.class, &block)
klass = CustomMatcher.create(name, &block)
context.send(:define_method, name) { |*args| klass.new(*args) }
end
Version data entries
11 entries across 11 versions & 2 rubygems